documentTHE COMPARISON DESK
Every detail. Side by side.
Compare the full collection or build a shortlist. Each sourced fact describes the stated plan or scope, not a promise that every tier includes it.
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SLA ≠ measured uptime. Prices use different billing units. Read the comparison notes →
| Comparison field | Plunk CloudMarketing + transactional |
|---|---|
| PricingBilling model | Free and usage-based paid optionsSource ↗ |
| PricingSelected paid rateSelected plans, not equivalent baskets. USD unless stated; taxes, add-ons and regional terms may differ. | USD 0.001/email (USD 1/1,000) on hosted paid plan.Source ↗ |
| PricingFree tier / trial | 1,000 emails/month; Plunk branding.Source ↗ |
| PricingOverage | Usage-based paid sending at USD 0.001/email.Source ↗ |
| PricingData / attachment charges | Emails with attachments cost 2 credits instead of 1, independent of attachment size.Source ↗ |
| PricingWhat counts as an email | Transactional/campaign sends per recipient; workflow sends and inbound emails share usage.Source ↗ |
| PricingCredit expiry | Usage limits reset each billing period; paid plan is metered, without a monthly subscription fee.Source ↗ |
| ReliabilityOfficial incident historyProvider-reported status, not independent monitoring or a live health indicator. | Official status pageOpen ↗ |
| ReliabilityContractual uptime SLAA service commitment, not observed uptime. Eligibility, exclusions and credit rules differ. | Not stated in reviewed docs Review detailsNo 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 |
| ReliabilityMeasured delivery latency | Not measured |
| ReliabilityMeasured inbox placement | Not measured |
| Sending & featuresHTTP API | AvailableSource ↗ |
| Sending & featuresSMTP relay | AvailableSource ↗ |
| Sending & featuresSDKs | Node.js and Python SDKs listed; REST API available.Source ↗ |
| Sending & featuresTemplates / editor | Reusable templatesSource ↗ |
| Sending & featuresWebhooks | Outbound event webhooks with documented payloads and endpoint configuration.Source ↗ |
| Sending & featuresInbound processing | Domain-wide inbound via MX; parsed headers, body and attachments delivered as JSON; workflow triggers supported.Source ↗ |
| Sending & featuresCampaigns / automation | Broadcasts, segments and event-triggered workflows.Source ↗ |
| Sending & featuresAnalytics | Opens, clicks, bounces, unsubscribesSource ↗ |
| Operations & securitySuppression management | Permanent bounces and complaints automatically unsubscribe contacts; soft bounces do not.Source ↗ |
| Operations & securityDaily / request limits | Per-category caps supported; outbound returns 402 at cap, inbound is dropped until reset.Source ↗ |
| Operations & securityLog / activity retention | Email metadata/metrics indefinite; rendered HTML 90 days; API request logs 30 days.Source ↗ |
| Operations & securityDedicated IP | Not stated in reviewed docs Review detailsCurrent dedicated-IP availability and eligibility were not established in the reviewed product documentation. Reviewed 2026-09-08 Reviewed source 1 ↗Reviewed source 2 ↗ |
| Operations & securityHosting / region notes | Vendor describes hosted service as EU-hostedSource ↗ |
| Operations & securitySending domains | Custom sending domains supported; numeric domain cap not specified on pricing page.Source ↗ |
| Operations & securitySender authentication | Custom domains with DKIM, SPF and DMARC setup.Source ↗ |
| Operations & securitySSO | Not stated in reviewed docs Review detailsExternal 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 | Documentation, GitHub and Discord community support listed.Source ↗ |
| Operations & securitySetup requirements | Verify sending domain via DNS: DKIM CNAMEs, SPF TXT and bounce MX; inbound MX is separate.Source ↗ |
| ResourcesWebsite | Official resourceOpen ↗ |
| ResourcesDocumentation | Official resourceOpen ↗ |
| ResourcesPricing page | Official resourceOpen ↗ |
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.