Postal alternatives
Providers that compete with Postal on at least one of: Self-hosted Transactional
Open-source mail delivery platform.
Switching as growth and lifecycle teams
Growth work lives or dies on targeting and measurement. What matters is whether behavioral triggers can be built without engineering time, whether the event stream supports attribution past the open, and whether deliverability holds when broadcast volume shares a reputation with product email.
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 growth and lifecycle 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
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 - 03
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 - 04
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 - 05
Cuttlefish
Self-hosted TransactionalOpen-source transactional email server with a web UI.
Matches Postal on every priority weighed here, so the decision is price and preference.
Free self-hosted, open source · Free self-hosted - 06
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 - 07
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 - 08
Cloudflare Email Service
Inbound TransactionalFree routing, programmable inbound via Workers, sending in beta.
Matches Postal on every priority weighed here, so the decision is price and preference.
Email Routing free; Email Workers on Workers Free plan · Sending: $0.35 per 1,000 messages (Workers Paid required, $5/mo)
Postal and its alternatives, side by side
Columns are the priorities growth and lifecycle teams weigh, in order. Postal is the first row so the trade in each direction is readable at a glance.
| Provider | Scheduling | Event stream | Operating since | Suppressions API | Best published rate per 1,000 | Multi-tenant |
|---|---|---|---|---|---|---|
| Postal | No | Yes | Not published | Yes | Tiers not published in comparable form | Yes |
| MailerSend | Yes | Yes | 2020 | Yes | Tiers not published in comparable form | Yes |
| Plunk | Yes | Yes | Not published | Yes | Tiers not published in comparable form | No |
| Loops | Yes | Yes | 2022 | Yes | Tiers not published in comparable form | No |
| Resend | Yes | Yes | 2023 | Yes | $0.35 | No |
| Cuttlefish | No | Yes | Not published | Yes | Tiers not published in comparable form | Yes |
| Postmark | No | Yes | 2010 | Yes | $1.50 | Yes |
| Mailtrap | No | Yes | 2014 | Yes | Tiers not published in comparable form | Yes |
| Cloudflare Email Service | No | Yes | Not published | Yes | Tiers not published in comparable form | Yes |
MailerSend adds capability without giving anything up on these priorities. The rest trade one thing for another.