Provide self-hosters with SnappyMail

Summary

Could you please provide self-hosters with Murena customized SnappyMail ?

Description

Self-hosters are currently provided with Rainloop.
Murena Cloud is now providing users with SnappyMail, which is better and supported.

What is the improved behavior?

Self-hosters could use SnappyMail, and provide it to their users, as Murena Cloud does.

What does it bring?

Secutiry and enhancements, as SnappyMail is currently supported.

Mock-ups

Please see Murena Cloud.

Examples

Please see https://community.e.foundation/t/snappymail-now-offered-on-nextcloud-a-possible-email-solution/47840.

Validation

Self-hosters will be able to use & provide Murena costomized SnappyMail.