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emitd vs Postmark
Postmark has been doing this since 2010 and has the strongest deliverability reputation in the category. That track record is real and it is the main reason to choose them. emitd is newer, runs its request path on the edge, and is substantially cheaper — and it says plainly that it has not yet earned fifteen years of reputation.
| emitd | Postmark | |
|---|---|---|
| Foundation | Cloudflare Workers (edge) + AWS SES | Vendor-managed delivery infrastructure |
| Integration | Plain HTTPS, 9 SDKs + CLI, MCP | SDKs for most languages |
| Ingestion latency | Global edge, ~tens of ms | Regional |
| Pricing | 5,000 free; then $0.35/1k or $0.28/1k prepaid | $55/mo includes 50k |
| DKIM / SPF / DMARC | Guided + verified live in-app | Yes |
| Suppression list | Automatic (bounce + complaint) | Yes |
| Message streams | Yes | Yes (pioneered them) |
| Signed webhooks | HMAC-signed, built in | Yes |
| Open/click tracking | Yes — HMAC-signed tokens | Yes |
| BYODKIM | Yes — single TXT record | No |
| Domain Connect | Yes — one-click DNS setup | No |
| Auto-pause circuit breaker | Yes — 5% bounce / 0.1% complaint | No |
| MCP (AI agent support) | JSON-RPC 2.0 endpoint | No |
| AI Design Studio | Yes — visual block editor + AI | No |
| Multi-payment providers | Stripe + Paddle + Razorpay | Stripe |
| Admin RBAC | super_admin, support_admin, billing_admin | No |
| Sandbox mode | Yes — full event simulation | No |
| Free tier | 5,000/month, 150/day | 100/month |
| Buy without a subscription | Yes — metered per 1,000, or credits | No |
| Charged per seat | Never | Never |
| Dashboard | Activity, templates, domains, analytics, AI Studio | Mature, deliverability-focused |
Where Postmark is stronger
- A deliverability track record going back to 2010 — the longest in the category, and not something a newer provider can claim.
- Message streams, which Postmark pioneered and still handles well.
- Deep deliverability tooling and a support team known for it.
Where emitd is stronger
- Requests handled at the edge in ~tens of milliseconds rather than at a regional origin.
- 5,000 emails a month free against Postmark's 100.
- $0.35 per 1,000 as you go against a $55/month plan for 50,000.
- You can buy metered or prepaid without a subscription; Postmark requires a plan.
- BYODKIM, Domain Connect, an auto-pause circuit breaker, a sandbox mode, and an MCP endpoint — none of which Postmark offers.
- An AI Design Studio for building templates visually.
Which should you pick
Pick Postmark if a proven, decade-plus deliverability record is your single most important criterion. Pick emitd if you want the same authentication discipline at a fraction of the price, with edge latency and a free tier you can actually build on.
See the full pricing, read the latency benchmarks, or compare all four side by side.