Prevent adding partners/customers as followers
It sends an e-mail from particular user's outgoing mail server. Use your own smtp server for sending mail from Odoo.
"Prevent Customer becoming Follower"
SMTP Server Per Company
Modern presentation of the messages of your discussion
Extension of Scheduled Activities by Employee, Supervisor and Manager.
Have a private group chat in a singal or group like skype or watsapp.
This module will help user to configure outgoing and incoming mail server.