Developer tools
SendGrid: SendGrid is Twilio's email API for transactional and marketing email delivery. These tools do a similar job: indie picks from our Friday drops and open source projects, each one chosen by a person.
Updated How we pick
4 alternatives to SendGrid
Built by small, independent teams
European transactional email API and SMTP relay
Best for EU companies wanting GDPR-friendly transactional email
lettermint.co ↗Free tier; paid plans
Free to use, and you can host them yourself
Open source mail delivery platform for outgoing and incoming email
Best for Running your own SendGrid-style mail server
Building an alternative to SendGrid?
Get it in front of people who want to try it. Free for makers.
Submit your tooldocs.postalserver.io ↗GitHub ↗Free (self-hosted)
Open source email platform for transactional email, campaigns and automations
Best for SaaS teams wanting one email tool with pay-as-you-go pricing
useplunk.com ↗GitHub ↗Free tier; pay-as-you-go; self-host free
Open source email platform for transactional and marketing email
Best for Developers wanting a self-hostable SendGrid/Resend alternative
usesend.com ↗GitHub ↗Free self-hosted; paid cloud
