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

If the spam score is above the first threshhold, flag the message as spam or deliver it to Spam folder;

Reject it immediately (preferably during the SMTP session) or just discard if the score is above the second, higher threshold.

This way the customer would have more control over the anti-spam system, allowing much less true spam mail to enter the mailbox.

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.

Many of our clients have requested the ability to manage their email configuration options through webmail, rather than via Plesk. I'd like the option to allow mail users to manage their account themselves via a Plesk Roundcube plugin that provides the following options:

1. Setting up an Autoresponder
2. Configuring forwarding / redirects
3. Changing their password

Others that would be handy as well:

A. Managing server-side mail filtering (whenever this becomes available in Plesk at all)
B. Spamassassin training

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.

Allow management of greylist filters and configuration from the Plesk control panel instead of only from command line as is currently the case.