Open-source free alternatives to Sendy

Sendy is a self-hosted email newsletter application that lets you send trackable emails via Amazon Simple Email Service (SES). It became incredibly popular because it's super cheap to send bulk emails, transactional emails, newsletters, marketing emails. You can send 100,000 emails using Sendy (via Amazon SES) for as little as $10. However, you have to shell out $69 for a one-time license fee.

There are three robust alternatives to Sendy which are open-source that can be self-hosted.

ListMonk
MailTrain
Mautic

ListMonk

ListMonk is a beautiful open-source and high-performance alternative to Sendy. It is used in production at companies that send millions of emails per campaign. However, it is relatively new and doesn't have a lot of documentation.

Features

Docker-based installation
Light-weight
High-performance (golang-backend)
Subscriber lists management
Templates
API (not fully documented)
Beautiful admin panel

Recommended minimal hardware

1 vCPU
512 MB RAM
Can be deployed on Heroku for free

MailTrain

MailTrain is built as an open-source newsletter alternative to Sendy. You can grab a copy of MailTrain from Github and self-host it on your own server. It's completely free to use! It's relatively simple to use.

Features

Subscriber lists management
List segmentation
Custom fields
Email templates (including MJML-based templates)
Custom reports
Automation (triggered and RSS campaigns)
Multiple users with granular user permissions and flexible sharing
Hierarchical namespaces for enterprise-level situations
Builtin Zone-MTA (https://github.com/zone-eu/zone-mta) for close-to-zero setup of mail delivery

Recommended minimal hardware

2 vCPU
4096 MB RAM

Github Link: https://github.com/Mailtrain-org/mailtrain/issues

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Mautic

Mautic is marketed as an open Source Marketing Automation Software. They claim to be the world’s largest open-source marketing automation project.

Features

In addition to the features of sendy and mailtrain, Mautic has a ton of marketing features and a large community to provide themes, plugins, and utilities. You can even create stunning landing pages with Mautic.