THE COMPARISON DESK

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SLA ≠ measured uptime. Prices use different billing units. Read the comparison notes →

Official-source review: September 8, 2026 · Scroll horizontally to see every provider.
Comparison field	ResendDeveloper platforms	PostmarkDeveloper platforms	MailgunDeveloper platforms	Amazon SESCloud providers	Twilio SendGridDeveloper platforms	BrevoMarketing + transactional	MailerSendDeveloper platforms	SMTP2GOSMTP specialists	MailjetMarketing + transactional	Elastic EmailMarketing + transactional	Zoho ZeptoMailDeveloper platforms	Plunk CloudMarketing + transactional	Azure Communication Services EmailCloud providers	Alibaba Cloud DirectMailCloud providers	Tencent Cloud SESCloud providers
PricingBilling model	Monthly subscription + overageSource ↗	Monthly card billing; no annual plansSource ↗	Monthly subscription + overageSource ↗	Usage-based; other plans availableSource ↗	Monthly subscriptionSource ↗	Monthly sending-volume tiers plus contact-storage limits; prepaid credits available.Source ↗	Monthly subscription + overageSource ↗	Monthly or annual subscriptionSource ↗	Monthly subscription + overageSource ↗	Monthly subscriptionSource ↗	Prepaid creditsSource ↗	Free and usage-based paid optionsSource ↗	Usage-basedSource ↗	Usage-based or prepaid packagesSource ↗	Pay-as-you-go, billed daily; dedicated IP billed monthly.Source ↗
PricingSelected paid rateSelected plans, not equivalent baskets. USD unless stated; taxes, add-ons and regional terms may differ.	Pro: USD 20/month · 50,000 emailsSource ↗	10k/month: Basic USD 15; Pro USD 16.50; Platform USD 18Source ↗	Basic: USD 15/month · 10,000 emailsSource ↗	À la carte: USD 0.10/1,000 outbound emailsSource ↗	Essentials from USD 19.95/monthSource ↗	Standard from USD 18/month; Professional from USD 499/month; Enterprise custom.Source ↗	Hobby: USD 7/month · 5,000 emailsSource ↗	Conflicting sources Review details The pricing page title and July 2026 article indicate USD 15/month, while the pricing cards show USD 10/month for 10,000 emails. Confirm the checkout quote. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Starter: USD 9/month · 8,000 emailsSource ↗	API Starter: USD 19/month · 50,000 emailsSource ↗	Needs confirmation Review details The current pricing page did not expose a readable credit price. Indexed older prices predate the announced July 1, 2026 pricing change and are not used as current quotes. Reviewed 2026-09-08 Reviewed source 1 ↗	USD 0.001/email (USD 1/1,000) on hosted paid plan.Source ↗	Published USD estimate: 0.00025/email (0.25/1,000), plus transferred data.Source ↗	Pay-as-you-go: USD 0.29/1,000 emailsSource ↗	International: USD 0.00028/email (USD 0.28/1,000).Source ↗
PricingFree tier / trial	3,000/month; 100/daySource ↗	Developer plan: 100 emails/monthSource ↗	100 emails/daySource ↗	New AWS accounts: up to USD 200 eligible-service credits, subject to AWS Free Tier conditions.Source ↗	Trial: 100/day for 60 daysSource ↗	300 emails/daySource ↗	500 emails/monthSource ↗	1,000 emails/monthSource ↗	6,000/month; 200/daySource ↗	API Free: up to 3,000/month; verify daily conditionsSource ↗	10,000 transactional emails (one free credit), valid for one month.Source ↗	1,000 emails/month; Plunk branding.Source ↗	Azure new-account offer: USD 200 credit for 30 days; eligibility applies, not a permanent email allowance.Source ↗	One-time 2,000 emails/account, up to 200 free/day; separate new-customer package promotion subject to purchase page.Source ↗	One-time gift quota of 1,000 emails per account.Source ↗
PricingOverage	Pro 50k: USD 0.90/1,000Source ↗	Per 1,000 above allowance; Basic example USD 1.80. Exact rate depends on tier.Source ↗	Per 1,000: Basic USD 1.80; Foundation from 1.30; Scale from 1.10, decreasing with volume. Extra usage cannot be disabled.Source ↗	Pay-as-you-go sending is metered; additional AWS services and optional features cost extra.Source ↗	Per-email overage billed next cycle; rate depends on plan.Source ↗	Additional prepaid credits available; purchase price varies by volume.Source ↗	Hobby: USD 1.50/1,000Source ↗	Published plan cards: Starter USD 1/1,000; Professional USD 0.85/1,000.Source ↗	Sending beyond allowance is billed per additional 1,000; plan-specific rate.Source ↗	Automatic plan upgrade when enabled; otherwise upgrade manually at the limit.Source ↗	Purchase more credits or enable auto top-up.Source ↗	Usage-based paid sending at USD 0.001/email.Source ↗	Usage-based charges for each recipient and transferred data; not a fixed email bundle.Source ↗	Switches to pay-as-you-go after package exhaustionSource ↗	After the free quota, sending switches to paid usage.Source ↗
PricingData / attachment charges	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	USD 0.12/GB of sent attachment dataSource ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Emails with attachments cost 2 credits instead of 1, independent of attachment size.Source ↗	Published USD estimate: 0.00012/MB transferred; agreement/currency may affect rates.Source ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed pricing does not establish a separate data or attachment transfer rate. This is not confirmation that all such charges are zero. Reviewed 2026-09-08 Reviewed source 1 ↗
PricingWhat counts as an email	Each recipient counts; sent and received mail includedSource ↗	Statistics count each recipient separately; Messages API TotalCount instead counts one multi-recipient message.Source ↗	Not stated in reviewed docs Review details Reviewed billing materials do not fully establish recipient, failed-attempt and inbound counting rules. Reviewed 2026-09-08 Reviewed source 1 ↗	Sending quotas count recipients, not API requests.Source ↗	One email per recipient; deferrals/spam placement still count. Marketing Campaigns billed separately.Source ↗	Prepaid: one credit per email to one contact.Source ↗	Not stated in reviewed docs Review details Reviewed billing materials do not fully establish recipient, failed-attempt and inbound counting rules. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed billing materials do not fully establish recipient, failed-attempt and inbound counting rules. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed billing materials do not fully establish recipient, failed-attempt and inbound counting rules. Reviewed 2026-09-08 Reviewed source 1 ↗	Not stated in reviewed docs Review details Reviewed billing materials do not fully establish recipient, failed-attempt and inbound counting rules. Reviewed 2026-09-08 Reviewed source 1 ↗	1 credit = 10,000 emails; each recipient countsSource ↗	Transactional/campaign sends per recipient; workflow sends and inbound emails share usage.Source ↗	Per recipient, plus bytes transferred including headers, body, images and attachments.Source ↗	Accepted messages billed regardless of final deliverySource ↗	Not stated in reviewed docs Review details Reviewed billing materials do not fully establish recipient, failed-attempt and inbound counting rules. Reviewed 2026-09-08 Reviewed source 1 ↗
PricingCredit expiry	Not stated in reviewed docs Review details The reviewed pricing does not establish all unused-allowance or prepaid-credit expiry rules. Reviewed 2026-09-08 Reviewed source 1 ↗	Unused monthly email allocation does not roll over.Source ↗	Not stated in reviewed docs Review details The reviewed pricing does not establish all unused-allowance or prepaid-credit expiry rules. Reviewed 2026-09-08 Reviewed source 1 ↗	AWS Free Tier credits expire 12 months after account creation; free plan lasts 6 months.Source ↗	Not stated in reviewed docs Review details The reviewed pricing does not establish all unused-allowance or prepaid-credit expiry rules. Reviewed 2026-09-08 Reviewed source 1 ↗	Prepaid email credits never expire.Source ↗	Monthly email usage resets every 30 days.Source ↗	Not stated in reviewed docs Review details The reviewed pricing does not establish all unused-allowance or prepaid-credit expiry rules. Reviewed 2026-09-08 Reviewed source 1 ↗	Unused email credits expire at the end of each monthly billing cycle.Source ↗	Not stated in reviewed docs Review details The reviewed pricing does not establish all unused-allowance or prepaid-credit expiry rules. Reviewed 2026-09-08 Reviewed source 1 ↗	Credits expire 6 months after purchaseSource ↗	Usage limits reset each billing period; paid plan is metered, without a monthly subscription fee.Source ↗	Azure introductory USD 200 credit valid for 30 days.Source ↗	Resource packages: 6 monthsSource ↗	Not stated in reviewed docs Review details The reviewed pricing does not establish all unused-allowance or prepaid-credit expiry rules. Reviewed 2026-09-08 Reviewed source 1 ↗
ReliabilityOfficial incident historyProvider-reported status, not independent monitoring or a live health indicator.	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Not stated in reviewed docs Review details A dedicated official incident-history page was not confirmed in the reviewed resources. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗	Official status pageOpen ↗
ReliabilityContractual uptime SLAA service commitment, not observed uptime. Eligibility, exclusions and credit rules differ.	Enterprise: 99.99% monthly email-sending availability (accept/process valid requests); exclusions and credit claim rules apply.Source ↗	Not stated in reviewed docs Review details No email-specific numerical contractual uptime commitment was established in the reviewed materials. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	99.99% monthly; excludes maintenance; contract eligibility appliesSource ↗	99.9% monthly per AWS region; exclusions and service-credit terms applySource ↗	API availability: 99.95%; 99.99% with specified paid email-service packages. Contract scope, exclusions and claims apply.Source ↗	Enterprise includes an SLA; numeric commitment requires contract review.Source ↗	99.5% monthly; transactional email/SMS; credit conditions applySource ↗	100% monthly service availability excluding scheduled maintenance; 5% fee credit per 30 minutes, capped at monthly fee.Source ↗	SLA offered with custom deliverability services; numeric commitment requires contract review.Source ↗	Not stated in reviewed docs Review details No email-specific numerical contractual uptime commitment was established in the reviewed materials. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details No email-specific numerical contractual uptime commitment was established in the reviewed materials. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details No email-specific numerical contractual uptime commitment was established in the reviewed materials. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Needs confirmation Review details The current Microsoft SLA download could not be retrieved during this review, so an email-specific percentage is not asserted. Reviewed 2026-09-08 Reviewed source 1 ↗	Monthly availability credit threshold 99.50%; exclusions and claim rules apply. Credit tiers 10%, 20%, 50%.Source ↗	Not stated in reviewed docs Review details No email-specific numerical contractual uptime commitment was established in the reviewed materials. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗
ReliabilityMeasured uptime	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured
ReliabilityMeasured delivery latency	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured
ReliabilityMeasured inbox placement	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured	Not measured
Sending & featuresHTTP API	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	REST sending and send-result APIs; API version 2025-09-01.Source ↗	SingleSendMail and BatchSendMail APIs.Source ↗	AvailableSource ↗
Sending & featuresSMTP relay	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	AvailableSource ↗	Yes; configure an SMTP password for the sender address.Source ↗	Available with account restrictions: new individual-verified accounts from March 2, 2026 cannot use SMTP; use API/console or organization verification.Source ↗
Sending & featuresSDKs	Node.js, PHP, Laravel, Python, Ruby, Go, Java, Rust, .NETSource ↗	TypeScript/Node.js, Python, Ruby/Rails, .NET, Java, PHPSource ↗	Go, Node.js, PHP, Java, Ruby and Python.Source ↗	AWS SDKs for JavaScript, Python, Java, .NET, Go, PHP, Ruby, Rust and more.Source ↗	C#, Go, Java, Node.js, PHP, Python and Ruby.Source ↗	Official API SDKs and client libraries documented.Source ↗	PHP, Laravel, Node.js, Go, Python, Ruby, JavaSource ↗	OSS integrations and examples for JavaScript/Node.js, PHP, Ruby and Python; not all examples are SDK packages.Source ↗	PHP, Node.js, Ruby, Python, Go, Java and C#/.NET.Source ↗	TypeScript, Ruby, Java, Go, Rust, Bash, C#, PHP, Perl, JavaScript and Python.Source ↗	Official SDK download through API documentation/dashboard; Python integration guide also available.Source ↗	Node.js and Python SDKs listed; REST API available.Source ↗	Email SDKs availableSource ↗	SDK sample generation through Alibaba Cloud OpenAPI Explorer.Source ↗	Tencent Cloud SDK 3.0 and API Explorer code generation.Source ↗
Sending & featuresTemplates / editor	React Email integrationSource ↗	Template sending APISource ↗	Template builder and API on FoundationSource ↗	Up to 20,000 templates per region; 500 KB maximum template size.Source ↗	Dynamic templates offeredSource ↗	Transactional template IDs with personalization and attachments.Source ↗	Drag-and-drop builderSource ↗	HTML templates with variables, app editor and template-management API.Source ↗	Advanced email editorSource ↗	Email designerSource ↗	Pre-built templates and editorSource ↗	Reusable templatesSource ↗	Not stated in reviewed docs Review details Sending HTML and text is documented; a managed template library or editor was not confirmed. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Up to 100 templates; recipient lists up to 10,000 addresses, subject to quota.Source ↗	Console template managementSource ↗
Sending & featuresWebhooks	1 / 5 / 10 endpoints on Free / Pro / ScaleSource ↗	Delivery, bounce, open, click and inbound events documentedSource ↗	AvailableSource ↗	Event publishing through SNS, CloudWatch and Firehose; integration configuration required.Source ↗	1 / 2 / 5 endpoints by planSource ↗	Transactional, marketing and inbound event webhooks.Source ↗	Free / Hobby: 1; Starter: 50Source ↗	Email/SMS event callbacks; Free 1 webhook, paid up to 10.Source ↗	AvailableSource ↗	ProSource ↗	Delivery and recipient activity eventsSource ↗	Outbound event webhooks with documented payloads and endpoint configuration.Source ↗	Event Grid webhooks for delivery reports and open/click engagement; Event Grid costs apply.Source ↗	Delivery results routed through EventBridge to targets including HTTP; separate service configuration required.Source ↗	Callbacks for delivery, rejection, bounce, open, click and unsubscribe events.Source ↗
Sending & featuresInbound processing	AvailableSource ↗	Pro / Platform include inbound processingSource ↗	Free: 1 inbound route; paid optionsSource ↗	Receiving rules integrate with S3, SNS and Lambda; regional availability applies.Source ↗	Inbound Parse webhook offeredSource ↗	Inbound parsing to structured JSON webhook; separate receiving domain required.Source ↗	Inbound routing available; check plan eligibility.Source ↗	Not stated in reviewed docs Review details An inbound receiving or parsing workflow was not confirmed in the reviewed product documentation. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Parse API processes inbound email for application integration.Source ↗	ProSource ↗	Not stated in reviewed docs Review details An inbound receiving or parsing workflow was not confirmed in the reviewed product documentation. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Domain-wide inbound via MX; parsed headers, body and attachments delivered as JSON; workflow triggers supported.Source ↗	Not stated in reviewed docs Review details An inbound receiving or parsing workflow was not confirmed in the reviewed product documentation. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details An inbound receiving or parsing workflow was not confirmed in the reviewed product documentation. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details An inbound receiving or parsing workflow was not confirmed in the reviewed product documentation. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗
Sending & featuresCampaigns / automation	Broadcast editor, segmentation, scheduling and automationsSource ↗	Separate transactional and broadcast message streamsSource ↗	Batch personalization, scheduling and segmentation via API.Source ↗	Bulk-send, contact lists and newsletter integration examples; application orchestration required.Source ↗	Separate Marketing Campaigns product and billing.Source ↗	Campaigns and marketing automation; feature scope varies by plan.Source ↗	Marketing can be sent via API; MailerLite is recommended for campaign management.Source ↗	Marketing sends with unsubscribe-footer management; campaign orchestration requires your sending application.Source ↗	Campaigns, segmentation and automations; plan-specific availability.Source ↗	Email Marketing is a separate product and requires a separate account from Email API.Source ↗	Transactional only; promotional campaigns are not supported.Source ↗	Broadcasts, segments and event-triggered workflows.Source ↗	Bulk and marketing sending supported; your application manages campaigns.Source ↗	Batch sending uses templates and recipient lists via console/API.Source ↗	Scheduled and recurring batch marketing/notification emails in console.Source ↗
Sending & featuresAnalytics	Domain-level open and click trackingSource ↗	Open and link trackingSource ↗	Delivery monitoring, event logs and tracking.Source ↗	Bounce, complaint, rejection, open and click monitoring; console, VDM and CloudWatch options.Source ↗	Delivery and engagement analytics.Source ↗	Sent, delivered, open and click events; log filtering and CSV export.Source ↗	Tracking and email activity analytics.Source ↗	Real-time analytics, bounce/spam tracking, unsubscribes and weekly summaries.Source ↗	Basic/advanced statistics and event webhooks.Source ↗	Email tracking and delivery reporting; feature scope varies by plan.Source ↗	Open and click trackingSource ↗	Opens, clicks, bounces, unsubscribesSource ↗	Bounce, blocked, open and click trackingSource ↗	Real-time statistics by sending address and tag.Source ↗	Console statisticsSource ↗
Operations & securitySuppression management	Automatic hard-bounce/complaint suppression; manual list managementSource ↗	Bounces and complaints retained in stream suppression listsSource ↗	API/dashboard suppression lists prevent further delivery attempts.Source ↗	Regional account-level suppression lists; add/remove addresses individually or in bulk through API v2 or console.Source ↗	Global unsubscribes and suppression management; attempted sends to suppressed recipients still consume credits.Source ↗	Separate campaign and transactional blocklists; transactional blocking can be sender-specific.Source ↗	Suppression list management.Source ↗	Hard-bounce addresses suppressed for 7 days; complaints, unsubscribes and manual address/domain blocking also supported.Source ↗	Campaign exclusion lists and unsubscribe management.Source ↗	Abuse reports automatically suppress future emails to the address.Source ↗	Bounce-related suppressionSource ↗	Permanent bounces and complaints automatically unsubscribe contacts; soft bounces do not.Source ↗	Suppression list supportSource ↗	Account/global invalid-address lists; manual account-list control. Invalid-address hits can still be billed.Source ↗	Not stated in reviewed docs Review details The reviewed materials do not establish the suppression lifecycle and account-level management behavior. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗
Operations & securityDaily / request limits	Free: 100/daySource ↗	Paid sending continues beyond allowance; no user-set hard spending capSource ↗	Free: 100/daySource ↗	Per region: sandbox 200 recipients/24h and 1/second; production limits require approval.Source ↗	Trial: 100/daySource ↗	Free: 300/daySource ↗	Free approved account: 500/month and 100/day; API request limits also vary by plan.Source ↗	Free 1,000/month and 200/day; monthly cap rejects further sends.Source ↗	Free: 200/daySource ↗	Free: 100 emails/day and up to 1,000 contacts.Source ↗	API documented limits include up to 340 To, 100 Cc, 100 Bcc and 60 attachments (15 MB limit); account review required.Source ↗	Per-category caps supported; outbound returns 402 at cap, inbound is dropped until reset.Source ↗	Higher sending quotas require approval and verified custom domains; Azure-managed domains are not eligible.Source ↗	Initial 2,000/day, adjusted by reputation; monthly limit is daily quota × 30.Source ↗	Documented initial limit: 500/day, 20/second; daily quota changes with reputation. Message limit 4 MB.Source ↗
Operations & securityLog / activity retention	30 days on Free / Pro / ScaleSource ↗	45 days by default; retention add-on: 7–365 daysSource ↗	Logs: 1–30 days by planSource ↗	VDM message search covers the last 30 days; exported-event storage has separate retention.Source ↗	Activity: 3 days on trial / Essentials; 7 on ProSource ↗	Indefinite by default, configurable. Above 10 million events, events older than 24 months are deleted unless extended retention applies.Source ↗	Activity: Free/Hobby 1 day, Starter 7, Professional 30. Professional API logs 7 days; activity extension up to 365 days is an add-on.Source ↗	Activity 30 days by default; paid extensions: 60/120 days, 1 or 2 years.Source ↗	Statistics/campaigns: Free 90 days, paid 13 months. Templates/contacts: account lifetime.Source ↗	Logs: 3 days Free / Starter; 7 days ProSource ↗	Email logs and optional content: 60 days; extended storage available through support.Source ↗	Email metadata/metrics indefinite; rendered HTML 90 days; API request logs 30 days.Source ↗	Delivery logs stored in your Azure Monitor workspace; configure its retention.Source ↗	Not stated in reviewed docs Review details The reviewed materials do not establish the full delivery-log retention policy; query windows are not necessarily retention periods. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details The reviewed materials do not establish the full delivery-log retention policy; query windows are not necessarily retention periods. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗
Operations & securityDedicated IP	Scale add-on: USD 30/month; volume condition appliesSource ↗	USD 50/IP/month; at least 300,000 messages/monthSource ↗	Available at 50k volume; included at 100k+ volume. IP pools and plan conditions apply.Source ↗	Standard: USD 24.95/IP/month; managed option separateSource ↗	Included on Pro / Premier; additional IPs purchasableSource ↗	Professional/Enterprise add-on USD 251/year; one included in Enterprise.Source ↗	Enterprise add-on; over 100k emails/weekSource ↗	Professional plan includes an IPSource ↗	Premium 100k+ plans, on requestSource ↗	Paid private-IP add-onSource ↗	Paid add-on, annual billing only; available in selected data centers.Source ↗	Not stated in reviewed docs Review details Current dedicated-IP availability and eligibility were not established in the reviewed product documentation. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details Current dedicated-IP availability and eligibility were not established in the reviewed product documentation. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Paid dedicated IPs with IP pools, manual/automatic warm-up and optional shared-IP fallback.Source ↗	USD 120/IP/month; partial months prorated. Up to 3 IP applications/month; inventory lead time can apply.Source ↗
Operations & securityHosting / region notes	Send: Virginia, Ireland, São Paulo, Tokyo. Account data stored in the US.Source ↗	Primary infrastructure: Chicago-area Deft and AWSSource ↗	US or EU hostingSource ↗	SLA measured separately per AWS regionSource ↗	EU residency requires an EU subuser, dedicated EU IP and EU endpoint (Pro/Premier); some processing exceptions apply.Source ↗	Databases hosted in EU: OVH France/Germany and Google Cloud Belgium; replicated across locations.Source ↗	Google data storage in the EU; DPA lists Belgium hosting. Subprocessor terms still apply.Source ↗	Data centers in US, EU and Australia; additional server locations. This is not a per-account residency guarantee.Source ↗	EU-based servers on Google Cloud; review privacy terms for processing scope.Source ↗	Data centers in the EU, US and Canada; per-account residency must be confirmed.Source ↗	Official security page lists US, Europe, China and India data centers; verify account DC availability.Source ↗	Vendor describes hosted service as EU-hostedSource ↗	Email processed in resource Data Location; Monitor workspace is customer-selected. Event Grid may store events globally.Source ↗	Documented SMTP endpoints: Hangzhou, Singapore, Virginia and Frankfurt; choose matching console region.Source ↗	Not stated in reviewed docs Review details Recipient coverage does not establish hosting location or data residency; these were not confirmed. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗
Operations & securitySending domains	3 / 10 / 1,000 on Free / Pro / ScaleSource ↗	Basic 5; Pro 10; Platform unlimitedSource ↗	1 on Free / Basic; 1,000 on Foundation / ScaleSource ↗	Up to 10,000 verified identities per AWS Region.Source ↗	3,000 authenticated domains and 3,000 link brandings per user/subuser.Source ↗	Not stated in reviewed docs Review details Custom sending domains are documented, but a numerical domain allowance was not established. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Free / Hobby: 1; Starter: 10Source ↗	No limit on verified sender domains or single sender addresses.Source ↗	100 senders per API key, counting verified addresses and domains together.Source ↗	Not stated in reviewed docs Review details Custom sending domains are documented, but a numerical domain allowance was not established. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	100 domains/account, up to 50 Agents; 100 domains per Agent.Source ↗	Custom sending domains supported; numeric domain cap not specified on pricing page.Source ↗	Azure-managed domain or verified custom sending domains.Source ↗	5 domains and 100 sender addresses.Source ↗	Up to 10 sending domains/account.Source ↗
Operations & securitySender authentication	Domain verification; DMARC and BIMI guidesSource ↗	DKIM; default SPF; custom Return-Path for DMARC alignmentSource ↗	SPF and DKIM DNS records; CNAME for tracking; MX for inbound.Source ↗	SPF, DKIM and DMARC configuration documented; Easy DKIM or customer-provided keys.Source ↗	Automated security uses 3 CNAME records; manual configuration uses TXT and MX records.Source ↗	Brevo verification code, DKIM and DMARC; automatic or manual DNS setup.Source ↗	SPF, DKIM and Return-Path DNS records; rolling upgrade to two 2048-bit DKIM CNAMEs.Source ↗	Automatic DKIM/SPF configuration with verified sender domains.Source ↗	DKIM for sender domains; one custom Return-Path and tracking host per API key.Source ↗	SPF, DKIM, tracking, MX and DMARC DNS verification documented.Source ↗	DKIM TXT and CNAME for Return-Path/SPF verification.Source ↗	Custom domains with DKIM, SPF and DMARC setup.Source ↗	SPF and DKIM; ARC supportSource ↗	Domain ownership, SPF, MX, DKIM and DMARC configuration documented.Source ↗	MX, SPF, DKIM and DMARC DNS configuration required.Source ↗
Operations & securitySSO	Scale add-on; Enterprise includedSource ↗	Not stated in reviewed docs Review details External identity-provider SSO protocols and plan eligibility were not established for this product. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	SAML SSO on ScaleSource ↗	Not stated in reviewed docs Review details External identity-provider SSO protocols and plan eligibility were not established for this product. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	SAML 2.0 on Email API Pro/Premier or Marketing Campaigns Advanced.Source ↗	SAML SSO: Professional add-on USD 324/month; included in Enterprise.Source ↗	Shared login with MailerLite documented; external enterprise IdP/SAML support not established.Source ↗	Not stated in reviewed docs Review details External identity-provider SSO protocols and plan eligibility were not established for this product. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	SAML for shared-access users on Premium 100k+ and Custom. Account uses either SSO or 2FA, not both.Source ↗	OpenID Connect providers with Discovery; documented for subaccount login.Source ↗	Not stated in reviewed docs Review details External identity-provider SSO protocols and plan eligibility were not established for this product. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details External identity-provider SSO protocols and plan eligibility were not established for this product. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details External identity-provider SSO protocols and plan eligibility were not established for this product. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details External identity-provider SSO protocols and plan eligibility were not established for this product. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Not stated in reviewed docs Review details External identity-provider SSO protocols and plan eligibility were not established for this product. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗
Operations & securitySupport channels	Email and Slack options; response commitments depend on planSource ↗	Support contact form; published hours Monday–Friday, 3am–7pm EST.Source ↗	Tickets; phone/chat on ScaleSource ↗	AWS Basic customer service and community access; technical response commitments depend on paid AWS Support plan.Source ↗	Not stated in reviewed docs Review details The reviewed materials do not establish the support-channel and plan-eligibility matrix. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Priority email on Standard; phone on Professional; account manager on Enterprise.Source ↗	Free limited; Hobby email; Starter email/chat; Professional priority email/chat and onboarding.Source ↗	Email tickets, chat and phone; Free chat/phone limited to first 14 days.Source ↗	Online; priority on PremiumSource ↗	Email/in-app support, 24/7 availability; paid priority/premium support add-ons.Source ↗	24/7 email and phone technical assistance.Source ↗	Documentation, GitHub and Discord community support listed.Source ↗	Not stated in reviewed docs Review details The reviewed materials do not establish the support-channel and plan-eligibility matrix. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗	Alibaba Cloud support tickets for inventory, limits and regional dedicated-IP requests.Source ↗	Sales and technical support contact channels; response commitments require plan confirmation.Source ↗
Operations & securitySetup requirements	Own and verify a sending domainSource ↗	Verify sender signature or domain, then configure authenticationSource ↗	Add a sending domain and verify its DNS records.Source ↗	Verify identities and request sandbox removal in each sending region; configure regional credentials.Source ↗	Authenticate sender domains by adding generated DNS records.Source ↗	Authenticate a domain through DNS; transactional sending activation also required.Source ↗	Add and verify your sending domain with automatic or manual DNS setup.Source ↗	Create an account, verify a sender and configure SMTP or an API key.Source ↗	Verify sending domain via DNS record or hosted file.Source ↗	Verify an owned sending domain not registered with another account; set default sender.Source ↗	Verify a sending domain before sending; associate it with an Agent.Source ↗	Verify sending domain via DNS: DKIM CNAMEs, SPF TXT and bounce MX; inbound MX is separate.Source ↗	Separate Email Communication resource requiredSource ↗	Real-name verification, activation, sending-domain DNS setup and sender configuration required.Source ↗	Verify your sending domain; avoid conflicting corporate mailbox domains. DNS sync can take 5 minutes–2 hours.Source ↗
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Unconfirmed cells include review details and sources: documentation may omit a value, sources may conflict, or a current page may be unreadable. Not measured means no independent test dataset.