SendPortal It's built on Laravel. It is a brand new email marketing system made by Mettle. Includes subscriber and list management, campaign management, message tracking, and much more.
One of the highlights of this app is that it is open source, self-hosted and can connect to some of the most popular email services such as Mailgun, SES, SendGrid, and Postmark. This allows you to send email for a fraction of the price of traditional email apps.
You can check sendportal, documentation or GitHub repository for full details.
KARABAY A, 2020 . Open Source Email Marketing System,
(Accessed June 09, 2020).