Postmark vs Resend Broadcasts
Postmark
postmarkapp.com
Resend Broadcasts
resend.comSide by side
| Figure | Postmark | Resend Broadcasts |
|---|---|---|
| Price from | $5/mo | $20/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 8 | 7 |
| Spec score · Transactional email services | 9.2 (#1) | 8.3 (#19) |
| Spec score · Transactional Email Software | 8.7 (#7) | 8.3 (#16) |
| Spec score · Email APIs | 8.6 (#6) | 8.3 (#10) |
| Spec score · Notification Infrastructure Software | 8.4 (#3) | 8.0 (#4) |
| Spec score · Email Analytics | 8.6 (#3) | 8.2 (#4) |
| Dedicated IP option | Yes | Yes |
| Founded | 2010 | 2023 |
| Free plan | Yes | Yes |
| Integrations | Official integrations include Slack, Zapier, Stripe, WordPress, Supabase, Bubble, Craft CMS, Netlify, and Gravity Forms. | The official Resend MCP server provides access to broadcasts, contacts, emails, webhooks, and other platform APIs. |
| Monthly send limit | 10000 | 50000 |
| Security | Postmark supports TLS and HTTPS, DKIM, SPF, DMARC, two-factor authentication, API permission controls, penetration testing, and DDoS protection. | Resend says it is SOC 2 Type II and GDPR compliant, encrypts stored data at rest, and uses TLS 1.3 or higher for data in transit. |
| Paid from | 15 | 20 |
| Support | Postmark offers support by email, live chat, and one-on-one calls and reports a 95% customer happiness rating. | Resend offers email support with first and next response SLAs and dedicated Slack support for eligible plans. |
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
Resend Broadcasts
- FreeFree
- Pro$20 a month
- Scale$90 a month
- FreeFree
- Pro$20 a month
- Scale$90 a month
- CustomPriced on request
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.
Resend Broadcasts
Resend Broadcasts has no write-up on Specifiction yet; its figures are above.