Apps with 'Group Mail' feature

This server provides you access to your environment on mailing list server. Starting from this web page, you can perform subscription options, unsubscription, archives, list management and so on.

Mailman is integrated with the web, making it easy for users to manage their accounts and for list owners to administer their lists. Mailman supports built-in archiving, automatic bounce processing.

The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.

Email lists, with an integrated web interface, and control. Administering large mailing list sites

Are you sick of the limitations of open source MLMs, but not ready to give up control to a web-delivered service? Give your users a web interface

Let your users read and post mess.

Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.

Affixa makes your webmail account part of Windows. Affixa makes gathering and preparing the files you want to send easy. Affixa gives you the choice of which web or desktop mail system you use and when.

Gaggle Mail is the simplest way to get a group email address up and running. Get started in seconds with a 30-day free trial.

Stackfield is a Slack-alternative for chat, collaboration, calendaring and file-sharing. It enables encrypted chatting (end-to-end encryption) and is hosted in Germany.

Your team loves your modern collaboration tool (e.g. Slack), but your clients and partners rely on email.

Groups is a powerful, easy to use contact management app for the iPhone/iPod Touch.