ReadMe vs Postmark
Developer hub: interactive API reference + guides with usage analytics
vs. Reliable transactional email with fast delivery
Pricing tiers
ReadMe
Free
$0. 1 project. ReadMe branding. Public docs only. Basic features. Intended for evaluation.
Free
Startup
$99/mo. 1 project. Custom domain, remove branding, 3 admins, API Explorer.
$99/mo
Business
$399/mo. Unlimited projects, SSO, usage analytics (Metrics Starter), versioning.
$399/mo
Enterprise
Custom (typically $10k+/yr). SLA, SAML, advanced metrics, large teams, localization.
Custom
Postmark
Free
100 emails/month forever. No credit card. Side projects and testing.
Free
Basic — 10k
10,000 emails/month. Overage $1.80/1k. Unlimited emails/day.
$15/mo
Pro — 10k
10,000 emails/month. Overage $1.30/1k. Inbound email + message streams.
$17/mo
Platform — 10k
10,000 emails/month. Overage $1.20/1k. Team collab, more domains.
$18/mo
Enterprise (>1.5M)
Custom for senders exceeding 1.5M/month.
Custom
Free-tier quotas head-to-head
Comparing free on ReadMe vs free on Postmark.
| Metric | ReadMe | Postmark |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
ReadMe · 15 features
- API Reference — OpenAPI → interactive reference.
- Changelog — Versioned release notes.
- Custom Branding — Logo, colors, fonts.
- Custom Domain — docs.yourco.com.
- Discussion Forum — Developer community.
- Guides — Markdown-style conceptual docs.
- Interactive Tutorials — Guided walkthroughs.
- Localization — Multi-language docs (Enterprise).
- Metrics — API usage logging + analytics.
- Recipes — Multi-step tutorials.
- Search — Full-text search.
- SSO — SAML + OIDC.
- Suggested Edits — Community-contributed edits.
- Try It Console — In-browser request runner.
- Versioning — Multi-version docs.
Postmark · 12 features
- Activity Search — Full-text search over sent messages for 45-365 days.
- Bounce Handling — Automatic hard/soft bounce detection + suppression management.
- Broadcast Messages — Via separate Broadcast Message Stream. Bulk sends with throttling.
- DKIM + SPF — One-click verification + auto-renewal of DKIM keys.
- Inbound Email — Route inbound emails to your webhook. Parse attachments, threads.
- Message Streams — Isolate transactional from marketing for separate deliverability reputation.
- Open + Click Tracking — Configurable at template or send level.
- Raw API Access — 100+ endpoints for bounces, servers, tags, templates, stats.
- Servers — Multi-tenant isolation: each "server" has its own API token + reputation.
- Templates — Mustachio template language with variables, alias + versioning.
- Transactional Send — Reliable API for password resets, receipts, notifications. Sub-10s delivery.
- Webhook Events — Delivery, bounce, spam complaint, open, click, subscription change.
Developer interfaces
| Kind | ReadMe | Postmark |
|---|---|---|
| CLI | rdme CLI | — |
| SDK | Metrics SDK | postmark-dotnet, postmarker (Python), postmark-go, postmark (Node), postmark-php, postmark-rails |
| REST | ReadMe API v2 | Postmark REST API |
| OTHER | OpenAPI Upload, ReadMe Dashboard, ReadMe Webhooks | Inbound Email, SMTP Relay, Webhooks |
Staxly is an independent catalog of developer platforms. Some links to ReadMe and Postmark may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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