According to https://support.plesk.com/hc/en-us/articles/115000786914-How-to-enable-SpamAssassin-spam-check-for-forwarded-emails-on-Windows when the option "Apply individual settings to spam filtering" is enabled, filtering of forwarded emails is not performed and additional steps are required.

Please, make it so that no additional steps would be required.

Implement push notifications to iOS devices from mail server.

Here are details of what I mean: using a patched version of Dovecot and a small Perl script, it's possible to get native Apple push notifications for new mail using the stock iOS mail client. This is accomplished by mimicking Apple's XAPPLEPUSHSERVICE IMAP extension for Dovecot used in macOS Server, whose source code is published on the Apple Open Source website. See more details here: http://bit.ly/2H8NERJ

As a Plesk administrator, I would like to set the sender email addres for PHP scripts.

The below article isn't applicable when using e.g. WordPress.

https://support.plesk.com/hc/en-us/articles/115002799114-How-to-send-mail-via-PHP-script-using-a-mailbox-located-on-another-server

p.s.: the article created based on comments to this article: https://support.plesk.com/hc/en-us/articles/213931945-Mail-to-external-mail-service-is-delivered-locally

- RoundCube webmail by Default provide a Vacation auto reply
- The option should not be hide in settings.
- Able to setup start and End date.
- Possible to set a limit to one message per day for each account.

I've installed 1.4 manually and it works without problems.

There is White List under Tools & Settings > Mail Server Settings, it is used by SpamAssassin.

MailEnalbe has also White List under Servers > localhost > Services and Connections > SMTP > Properties > Whitelist.

MailEnalbe Whitelist cannot be managed through Plesk.

It would be nice, to have ability to manage MailEnalbe Whitelist in Plesk interface

For now SpamAssassin on Plesk for Windows does not add any headers to mail messages which were processed by it and not identified as spam. It would be good feature to add header showing that SpamAssassin actually processed this messages to all mail messages, even not spam one.
This could be helpful in order to monitor SpamAssassin functionality to understand if it works in general or not. Plus, some Spam checkers may show that mail inside mailbox were not checked at all, which is concerning.

Hello,

It would be amazing to be possible to create a distribution list via Plesk Premium email without creating a mailbox and forward the emails.

eg. create a example@example.com without a mailbox and forward to a group RH or Sales.

It would be nice to provide mail SSL/TLS support with SNI for more domains from single IP

Currently, Plesk Premium Email can be enabled only for a subscription.
But Plesk Premium Email license differ by a number of users, so, to not exceed the license limit, it'll be handy to define which particular mailboxes on a subscription have the ability to use Plesk Premium Email

If DKIM or SPF test failed and DMARC enabled with quarantine policy the message will be sent directly to spam. Need the possibility to add tags and rules for messages, for example add tag to subject [DKIM FAILED] but save the message in the inbox folder (not send to spam)

There is a Mail Importing feature in Site Import extension, but it is possible only to migrate emails one by one. It would be great if there is an ability to migrate a couple of mailboxes at once.

In order to comply with RFC3834 the auto replay function should consider the X-Auto-Response-Suppress header. Also not replaying to mail with Auto-Submitted: auto-generated would be nice.

the gdpr request to change password every 6 month. it would be nice every 6 month remember to client to change password.
witha link to a dedicate page to change pwd ( out webmail ) and with captcha or other security system.

I would be a good Idea to be able to change webmail URL via Plesk, not using workaround https://support.plesk.com/hc/en-us/articles/213947325-How-to-set-up-an-access-to-webmail-over-mail-example-com

The mail account settings under 'Home > Domains > (domain) > Email Addresses' display the users own domain as mail server. (when clicking the "i" on the right side)
However, the domain on the certificate of the mailserver is usually different, as this is configured under 'Home > Tools & Settings > SSL/TLS Certificates' and applies to all domains and e-mailaccounts on the Plesk server.

This leads to issues when a client accepts the unsafe certificate when setting up his mail client, but this certificate is later changed (as happens more often when using Let's Encrypt certificates).

Add a functionality that notifies a sender through an email notification that his sent email has been deferred within 30 minutes

Use "Let's encrypt" to secure IMAP/POP/SMTP connections to avoid "non valid certificate" messages with self signed certs.