Listmonk is an open-source self-hosted newsletter and mailing list manager. It comes as a standalone binary, and the only dependency is a Postgres database.
More Details
Listmonk is free and open-source software licensed under AGPLv3.
Related Tools
Brevo
Brevo is an email marketing tool suitable for organizations of any size. It provides a suite of features that includes marketing automation, email campaigns, transactional emails, and SMS messages.
Moosend
Moosend is a cloud-based marketing automation software designed to help businesses manage email marketing campaigns, subscriber lists, customer segmentation, product recommendations, landing pages, and subscription forms.
MailerLite
MailerLite is a user-friendly email marketing software built with a mission to be simple and easy to use using a clean and functional design, effective UI, and drag-and-drop editor.
Mailchimp
Mailchimp is an email marketing platform that helps you manage your mailing lists, create custom email templates, and nurture and automate your entire marketing campaigns.
Sender
Sender is a user-friendly email marketing provider that lets you create and send personalized, branded emails using high email deliverability capabilities, drag & drop builder, free templates gallery, and more.
4 
