Open Source Alternatives to SendGrid
A cloud email delivery service that provides an API and SMTP relay for sending transactional and marketing messages, with analytics, templates, and validation tools.
Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to SendGrid give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 7 open source alternatives to SendGrid. The most popular are Postal, Billion Mail and Plunk. Most use the AGPL-3.0 or busl-1.1 license, and 7 offer an official Docker image.
Postal
A self hosted mail server for sending transactional and bulk emails from websites and web servers.
Billion Mail
A self-hosted email marketing and mail server for managing newsletters, promotional campaigns, and transactional messages.
Plunk
A self-hosted email platform for sending transactional messages, managing marketing campaigns, and automating communication workflows.
useSend
An open source sending infrastructure for managing transactional emails, marketing newsletters, and contact subscriptions via Amazon SES.
Forward Email
Privacy focused email service providing encrypted forwarding and full mail server capabilities for custom domains.
Sessy
Track AWS SES deliveries, bounces, opens and clicks through a self-hosted dashboard with real-time search and analytics.
Hyvor Relay
A self-hosted email API for developers to send transactional and distributional emails using their own infrastructure.
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