Postmark vs TrueSend
Postmark
postmarkapp.comTrueSend
truesend.comSide by side
| Figure | Postmark | TrueSend |
|---|---|---|
| Price from | $5/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 8 | 3 |
| Spec score · Email Deliverability Software | 8.7 (#6) | 6.9 (#30) |
| Spec score · Email Analytics | 8.6 (#3) | 6.7 (#6) |
| Company history | Postmark says it has delivered billions of emails since 2010. | The About page’s timeline describes a 2022 problem stage and development of domain warm-up and real-time analytics in 2023. |
| Integrations | Official integrations include Slack, Zapier, Stripe, WordPress, Supabase, Bubble, Craft CMS, Netlify, and Gravity Forms. | The integrations directory lists Shopify, WooCommerce, Magento, Salesforce, HubSpot, Pipedrive, Google Analytics, Segment, Zapier, WordPress, Stripe, and Slack, among others. |
| Security | Postmark supports TLS and HTTPS, DKIM, SPF, DMARC, two-factor authentication, API permission controls, penetration testing, and DDoS protection. | The features page says TrueSend is SOC 2 Type II certified, encrypts data at rest with AES-256 and in transit with TLS 1.3, and supports SAML 2.0 SSO and 2FA. |
| Support | Postmark offers support by email, live chat, and one-on-one calls and reports a 95% customer happiness rating. | The home page advertises 24/7 expert support. |
Plans
Postmark
- FreeFree
- Basic$15 a month
- Pro$16.50 a month
- Platform$18 a month
- Custom activity retention$5 a month
- DMARC monitoring$14 a month
- Dedicated IP$50 a month
- High-volume plansPriced on request
TrueSend
- Custom PlanPriced on request
- Free PlanPrice not published
- Standard PlanPrice not published
In their own words
Postmark
Postmark delivers and tracks application email as an alternative to SMTP or Sendmail. It separates transactional and broadcast messages into different Message Streams and IP infrastructure. Developers can send through REST API, SMTP, or multi-region SMTP routing, with official libraries for Node.js, Python, Rails, Ruby, PHP, and.NET. Inbound messages can be converted to JSON and sent to a webhook URL. Tracking includes delivery, bounces, spam, opens, and links, with event webhooks. Editable responsive templates cover transactional messages such as password resets, receipts, and invitations. The free Developer plan costs nothing, provides 100 emails per month, permits no overages, and does not expire. Basic starts at $15 a month for 10,000 emails per month; extra emails cost $1.80 per 1,000 and are calculated at the end of the billing cycle. Unused emails do not roll over. Postmark lists API and web access. Its iOS app was sunset in June 2025 and is no longer supported.
TrueSend
TrueSend is an email marketing platform for campaigns, automation, analytics, and deliverability, available on the web and through an API. Its drag-and-drop editor, templates, and A/B testing support campaign creation. A visual workflow builder can trigger email journeys using user actions and attributes. Reports cover opens, clicks, conversions, revenue attribution, click heatmaps, and subscriber growth. Deliverability controls include dedicated and shared IP pools, automated warm-up, authentication setup, reputation and inbox-placement monitoring, bounce handling, and spam score previews. The Email API supports transactional and bulk sending, dynamic templates, webhooks, analytics tracking, attachments, and SDKs. Listed integrations include Shopify, Salesforce, HubSpot, Google Analytics, Zapier, WordPress, Stripe, and Slack, among others. TrueSend lists a free plan with 6,000 emails per month, two sending domains, and basic analytics; its Standard price is still loading, while Custom pricing is by quote. Security features include SOC 2 Type II certification, encryption, SSO, and 2FA. The company is based in Pune, India.