What are the modules for django to implement the web interface for mail?

Question

Django

I study Django in combat mode for myself, I write crm. In order to immediately choose the right directions, the following questions arose (I ask questions separately so as not to confuse the discussion.
2. Web mail will be made (simplified, it's not even mail, but a general message that receives messages from the site via telegram, maybe some other sources of messenger requests ...), I didn’t look well or there are no ready-made mail applications for janga with a web interface ? If there is no web interface, then which package is better to use for exchanging mail (labels will be attached to mail messages and related orders will be created based on messages), I would like to save only messages on which work is being done in the database, and receive the rest via IMAP and still need gmail-like functionality for collecting emails into threads, and manually merging emails into threads. What modules are best to use?

Answer 1

with
the mail you will get that "what is not like in Gmail / Yandex / Outlook", and there are no such free ones on which framework, although there were attempts until 2015,
you can look at the batteries, but everything is sooo insecure