Postmark
postmark.com · Email · 1 record · JSON
Postmark Email
fails: quotaemailno cardDrequest-rate
| Free tier | 100 emails/month on the free Developer tier, which does not expire unit requests; metered on request-count |
|---|---|
| Price | none stated |
| Per-object cap | not applicable |
| Retention | 45 days of activity retention |
| Egress | not applicable: an outbound sender |
| Identity | email an account |
| Limits |
no daily allowance exists: 100 emails per month is the whole month, which is 3.3 a day averaged. A verified sender signature or domain is required and a card is not |
| Binding | request-rate |
| Interface | rest https://api.postmarkapp.com/email |
| Tooling | curl, any HTTP client |
| Composes with | composes with a domain and with nothing else at this volume. |
| Reliability | no overage on the free tier |
| Notes | There is no burst room at all, which distinguishes it from every 100/day product here. |
| Evidence rung | documented |
| Checked | 2026-10-23 (live); stale on 2026-11-22 |
Evidence (2)
| date | source | what it proved |
|---|---|---|
| 2026-10-22 | www.postmark.com/pricing | 'Test your integration with 100 emails/month' |
| 2026-10-22 | probe:smtp://smtp.postmarkapp.com:587 | banner 250, EHLO advertises SIZE and 8BITMIME, STARTTLS completed, and AUTH LOGIN returned 334 |
More fields (1)
{
"stale_after_days": 90
}