Into domains blaklist frequentelly we have subdomains sendind emails,
so block just a domain not solve the situation.

i suggest a check option to block all subdomains as well,

please see the post forum for more info.
http://forum.odin.com/threads/is-black-list-server-wide-mail-settings-working.333066/#post-780648

All incoming/outgoing mail for a certain domain is copied automatically to a different inbox within that domain.

http://forum.sp.parallels.com/threads/email-archive.92570/

The ability to empty a users emailbox without deleting the account and recreating would be great.

Add Sogo as a webmail alternative in Plesk.

Sogo share your calendars, address books and mails in your community with a completely free and open source solution

Sogo is a great webmail solution and provides native Microsoft ActiveSync support. Mobile devices such as Apple iPhone, Android, Windows Phone, and BlackBerry 10 can fully synchronize emails, contacts, events and tasks with SOGo.

It would be nice to have an external SMTP (smarthost) ability for a per-domain basis (most mail services have this)

We use this for external scanning, data leak prevention and more.

Can this be be done?

At the moment by default any webmail interface is under domain webmail.<domain>

Some people would like to use custom one. For me personally it's important to have this as server-wide setting (I have basic workaround for this - custom domainWebmail.php), but it isn't perfect (many links to webmail service missing, e.t.c.).

And that's why we have plesk - user friendly interface.

I suggest you add a feature in Settings with which we can enable SPAM / VIRUS protection for newly created mailboxes by default.

Discussion here:

http://forum.parallels.com/showthread.php?287233-Anti-virus-and-anti-spam-enabled-by-default-on-mailbox-creation&p=715980#post715980

It would be much better if server-wide and per-mailbox options were available in Plesk to add SpamAssassin rules.

SpamAssassin can be configured by the command line, but this is difficult for many of us.

Actually it's possible to show deferred messages headers in : Tools and settings > mail server settings > mail queue

It would be very useful if it's possible to show the reason why the message is deffered or stuck in the queue (/var/spool/postfix/defer).

enable email piping like in cPanel email forwarders to pipe to a script (osticket)

Most of RBLS are checking the SMTP Banner and currently only the first domain name is being used. To reduce scamming or to prevent being blacklisted you should apply myhostname with the according domain name.

I want to be able to set the recipient_delimiter. But, currently, any customizations to main.cf get overwritten.

Add functionality to import csv files to create multiple e-mail accounts from a list in Plesk Panel

I'm not sure if any webmail option right now allows the email user to update their out of office / auto response message. I think the email user has to login to Plesk to be able to edit that right now (which is annoying).

Anyone have any suggestion on this?

Make SPAM and Virus statistics visible on linux like on windows

Is easy to use.

ActiveSync is a necessary tool for most businesses today as it allows them to have everything in one place and stream it automatically to every device they use. Users with mobile phones and tablets can easily sync their contacts, calendars, notes and emails via activesync and users with outlook and other mail clients can sync contacts, mail and perhaps notes.

Many mail servers have this feature. Please include in plesk possibility to add disclaimer to mail footer on specified domain.

Many Clients ask me how to add Disclaimer to mail footer automatically not from webmail.

Now you have two opportunities to set the spamfilter - server-wide or individual. It would be very handy if the admin or the customer could set the spamfilter for the whole subscription or/and for the whole domain.