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Open-source alternatives to SendGrid

Compare community-driven replacements for SendGrid in email marketing platforms workflows. We curate active, self-hostable options with transparent licensing so you can evaluate the right fit quickly.

SendGrid logo

SendGrid

SendGrid Email Marketing offers email campaign design, SMTP relay, and delivery optimization with real-time analytics and deliverability tools. It supports API integration for automated transactional and marketing emails.Read more
Email Marketing Platforms
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Key stats

  • 9Alternatives
  • 7Support self-hosting

    Run on infrastructure you control

  • 8Active development

    Recent commits in the last 6 months

  • 3Permissive licenses

    MIT, Apache, and similar licenses

Counts reflect projects currently indexed as alternatives to SendGrid.

Start with these picks

These projects match the most common migration paths for teams replacing SendGrid.

BillionMail logo
BillionMail
Best for self-hosting

Why teams pick it

Self-hosted architecture with customizable templates and list management

SendPortal logo
SendPortal
Privacy-first alternative

Why teams pick it

Complete data ownership and control with self-hosted deployment

All open-source alternatives

BillionMail logo

BillionMail

Self-hosted email marketing and mail server platform

Self-host friendlyActive developmentPrivacy-firstGo

Why teams choose it

  • 8-minute installation with automated DNS verification and SSL setup
  • Integrated mail server (Postfix, Dovecot, Rspamd) with RoundCube webmail
  • Unlimited email sending with advanced analytics and campaign tracking

Watch for

Requires server infrastructure and technical expertise to maintain

Migration highlight

SaaS Transactional Email

Application sends password resets, notifications, and receipts through owned infrastructure without per-email fees

SendPortal logo

SendPortal

Self-hosted email marketing platform with campaign tracking and automation

Self-host friendlyPermissive licensePrivacy-firstPHP

Why teams choose it

  • Multi-workspace architecture for managing campaigns across multiple brands or clients
  • Native integration with five major email service providers (SES, Postmark, Sendgrid, Mailgun, Mailjet)
  • Comprehensive tracking and reporting for subscriber engagement and campaign performance

Watch for

Requires PHP 8.2+ and Laravel 10+ infrastructure management expertise

Migration highlight

Agency Multi-Client Management

Digital agencies use multi-workspace support to manage separate email campaigns for dozens of clients from a single installation, reducing per-client tooling costs.

useSend logo

useSend

Self‑hosted email platform delivering reliable, low‑cost SES mail

Self-host friendlyActive developmentPrivacy-firstTypeScript

Why teams choose it

  • Dashboard with delivery, open, click, and bounce metrics
  • REST and scheduled API for transactional and marketing emails
  • SMTP endpoint compatible with existing tools

Watch for

Beta stage may lack stability

Migration highlight

Transactional order confirmations

Deliver reliable order emails with real‑time open tracking

Plunk logo

Plunk

Self-hosted email platform powered by AWS SES

Self-host friendlyActive developmentPrivacy-firstTypeScript

Why teams choose it

  • Transactional email API integrated with AWS SES
  • Automation workflows triggered by user actions
  • Broadcast capability for newsletters and product updates

Watch for

Tied to AWS SES pricing and limits

Migration highlight

Order confirmation emails

Send reliable transactional messages instantly after purchase, ensuring customers receive receipts.

Mautic logo

Mautic

Open source marketing automation software you control completely

Self-host friendlyActive developmentPrivacy-firstPHP

Why teams choose it

  • Self-hosted deployment with complete data ownership and no vendor lock-in
  • Multi-channel campaigns across email, SMS, social media, and web without extra costs
  • Unlimited contact segmentation and marketing automation workflows

Watch for

Requires technical expertise for installation, configuration, and ongoing maintenance

Migration highlight

Privacy-Compliant Lead Nurturing

Healthcare organizations automate GDPR-compliant email sequences while maintaining full data sovereignty on private infrastructure

Postal logo

Postal

Self‑hosted mail server for inbound and outbound email.

Active developmentPermissive licensePrivacy-firstRuby

Why teams choose it

  • Handles inbound and outbound email at scale
  • Self‑hosted deployment via Docker or native Ruby
  • Extensive documentation and CLI tools

Watch for

Requires own server infrastructure and maintenance

Migration highlight

Transactional email for web applications

Reliable delivery of password resets, order confirmations, and notifications without third‑party fees.

Listmonk logo

Listmonk

Self-hosted newsletter and mailing list manager in one binary

Self-host friendlyActive developmentPrivacy-firstGo

Why teams choose it

  • Single binary deployment with PostgreSQL backend for minimal infrastructure overhead
  • Modern Vue-based dashboard for campaign management and subscriber analytics
  • Supports transactional emails, SMS gateways, and custom SMTP configurations

Watch for

Requires PostgreSQL database setup and maintenance

Migration highlight

Product Update Newsletters

SaaS companies send feature announcements and release notes to segmented user lists while maintaining full control over subscriber data and delivery infrastructure.

OpenEMM logo

OpenEMM

Open-source email marketing automation and campaign management platform

Self-host friendlyActive developmentPrivacy-firstJavaScript

Why teams choose it

  • Multi-stage email campaign automation with autoresponder capabilities
  • Self-hosted deployment for complete data control and privacy
  • Transactional email support alongside marketing campaigns

Watch for

Manual build process requires technical expertise in Python, Java, and Ant

Migration highlight

Enterprise Newsletter Distribution

Deploy branded newsletter campaigns to large subscriber bases while maintaining complete control over customer data and infrastructure

Haraka logo

Haraka

High-performance Node.js SMTP server with modular plugin architecture

Active developmentPermissive licenseIntegration-friendlyJavaScript

Why teams choose it

  • Handles thousands of concurrent connections with asynchronous Node.js performance
  • Modular plugin architecture for spam filtering, authentication, DKIM signing, and custom logic
  • Built-in outbound mail delivery engine with automatic queueing for relay messages

Watch for

Not a complete mail solution—requires separate systems for storage, IMAP, and local delivery

Migration highlight

Spam Filtering Gateway

Deploy Haraka in front of Exchange or Postfix to filter incoming mail through SpamAssassin, DNSBL checks, and custom rules before delivery to the mail store.

Choosing a email marketing platforms alternative

Teams replacing SendGrid in email marketing platforms workflows typically weigh self-hosting needs, integration coverage, and licensing obligations.

  • 7 projects let you self-host and keep customer data on infrastructure you control.
  • 8 options are actively maintained with recent commits.

Tip: shortlist one hosted and one self-hosted option so stakeholders can compare trade-offs before migrating away from SendGrid.