AWS SES costs $15/mo.
These cost $0.
2 free alternatives to AWS SES, checked for license, recent activity and real adoption. Each one tells you the catch, so you can switch with your eyes open.
The top-rated free, open-source replacement for AWS SES is Postal (Open Source Open Source). Across this category, 2 self-hostable tools are available (including Postal and Hyvor Relay). Switching a 5-person team saves up to $900/year compared to AWS SES's $15/mo subscription.
The catch: Requires self-hosting setup, updates, and server maintenance compared to managed AWS SES.
AWS SES vs Free Alternatives
Quick side-by-side comparison · $0/mo vs $15/mo
| Alternative | Type | License | Where It Runs | Stars | Head-to-Head |
|---|---|---|---|---|---|
| Postal | open source | Open Source | Self-host | ★ 16.9k | AWS SES vs Postal → |
| Hyvor Relay | open source | Open Source | Self-host | ★ 922 | AWS SES vs Hyvor Relay → |
The picks
2 open source · ranked by fit
- 01
Postal
open sourceOpen SourceSelf-host16.9knov 2026Run your own mail delivery infrastructure with a web interface, webhooks, IP pools, and spam filtering integrations for inbound and outbound email.
The catch vs AWS SESRequires self-hosting setup, updates, and server maintenance compared to managed AWS SES.
Install, platforms & data +
- platforms
- webself-hosteddocker to self-host
- install
- Clone https://github.com/postalserver/postal or deploy with Docker Compose
- setup
- Deploy via Docker or binary release from GitHub and configure environment variables.
- your data
- All application data and configuration live on your own server or local database.
- checked
- 2026-11-07
- 02
Hyvor Relay
open sourceOpen SourceSelf-host922nov 2026Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
The catch vs AWS SESRequires self-hosting setup, updates, and server maintenance compared to managed AWS SES.
Install, platforms & data +
- platforms
- webself-hosteddocker to self-host
- install
- Clone https://github.com/hyvor/relay or deploy with Docker Compose
- setup
- Deploy via Docker or binary release from GitHub and configure environment variables.
- your data
- All application data and configuration live on your own server or local database.
- checked
- 2026-11-07
AWS SES Head-to-Head Comparisons (2027)
Side-by-side trade-off breakdowns · 2 free alternatives
Frequently Asked Questions
Direct answers · AWS SES open-source replacements
What is the best free alternative to AWS SES?+
The top free alternative to AWS SES is Postal (open source, Open Source). Run your own mail delivery infrastructure with a web interface, webhooks, IP pools, and spam filtering integrations for inbound and outbound email. Other popular AWS SES replacements include Hyvor Relay.
Can I self-host a free replacement for AWS SES?+
Yes. Of the 2 free alternatives to AWS SES, 2 can be self-hosted on your own server or local machine: Postal (Open Source), Hyvor Relay (Open Source).
How much does switching from AWS SES to a free alternative save?+
AWS SES starts at $15/month per seat ($180/year). Switching a 5-person team to a free alternative like Postal saves $900 per year in software subscription fees.
Should I vibe-code or build my own AWS SES clone from scratch?+
Our build verdict for AWS SES is NO (use a free alternative, save the tokens). Instead of paying recurring SaaS fees for AWS SES or rebuilding it from scratch, deploy one of the 2 battle-tested open-source alternatives like Postal.
What is the catch when switching from AWS SES to Postal?+
Requires self-hosting setup, updates, and server maintenance compared to managed AWS SES.
