Postal alternatives
Providers that compete with Postal on at least one of: Self-hosted Transactional
Open-source mail delivery platform.
Switching as SaaS product teams
A SaaS product sends on behalf of its customers, so the deciding factors are tenant isolation, whether suppressions can be scoped rather than global, and whether support can answer why one specific account did not receive one specific email. Lifecycle automation and transactional sending usually need to coexist.
Postal does not cover scheduling. MailerSend, Plunk, and Loops close that gap. The order below weighs this audience's priorities first, so it differs from a general popularity ranking.
ranked for SaaS product teams
- 01
MailerSend
TransactionalModern transactional API with a clean UI.
Adds scheduling over Postal, with nothing given up on these priorities.
500/mo permanent · $7/mo for 5,000 emails - 02
Postmark
TransactionalTransactional-only, fast and well-delivered.
Matches Postal on every priority weighed here, so the decision is price and preference.
100/mo developer plan · $15/mo for 10,000 emails - 03
Mailtrap
Transactional TestingOriginally a staging inbox, now a sender too.
Matches Postal on every priority weighed here, so the decision is price and preference.
4,000/mo (sending), free testing tier · $15/mo for 10,000 sending - 04
Cuttlefish
Self-hosted TransactionalOpen-source transactional email server with a web UI.
Gives up webhook coverage against Postal and adds nothing on these priorities.
Free self-hosted, open source · Free self-hosted - 05
Cloudflare Email Service
Inbound TransactionalFree routing, programmable inbound via Workers, sending in beta.
Gives up webhook coverage against Postal and adds nothing on these priorities.
Email Routing free; Email Workers on Workers Free plan · Sending: $0.35 per 1,000 messages (Workers Paid required, $5/mo) - 06
Plunk
Self-hosted MarketingOpen-source unified email platform.
Adds scheduling, gives up multi-tenant support.
3,000/mo on hosted free plan · $19/mo or self-host - 07
Loops
Marketing TransactionalModern lifecycle and broadcast email for SaaS.
Adds scheduling, gives up multi-tenant support.
1,000 contacts and 4,000 sends/mo on the Free plan · $49/mo for 5,000 contacts - 08
Resend
TransactionalEmail API tightly coupled to React Email.
Adds scheduling, gives up multi-tenant support.
3,000/mo permanent, capped at 100/day, one domain · $20/mo for 50,000 emails
Postal and its alternatives, side by side
Columns are the priorities SaaS product teams weigh, in order. Postal is the first row so the trade in each direction is readable at a glance.
| Provider | Multi-tenant | Event stream | Suppressions API | Operating since | Scheduling | Best published rate per 1,000 | Webhooks |
|---|---|---|---|---|---|---|---|
| Postal | Yes | Yes | Yes | Not published | No | Tiers not published in comparable form | Yes |
| MailerSend | Yes | Yes | Yes | 2020 | Yes | Tiers not published in comparable form | Yes |
| Postmark | Yes | Yes | Yes | 2010 | No | $1.50 | Yes |
| Mailtrap | Yes | Yes | Yes | 2014 | No | Tiers not published in comparable form | Yes |
| Cuttlefish | Yes | Yes | Yes | Not published | No | Tiers not published in comparable form | No |
| Cloudflare Email Service | Yes | Yes | Yes | Not published | No | Tiers not published in comparable form | No |
| Plunk | No | Yes | Yes | Not published | Yes | Tiers not published in comparable form | Yes |
| Loops | No | Yes | Yes | 2022 | Yes | Tiers not published in comparable form | Yes |
| Resend | No | Yes | Yes | 2023 | Yes | $0.35 | Yes |
MailerSend adds capability without giving anything up on these priorities. The rest trade one thing for another.