At this moment you can change favicon.ico by replacing /usr/local/psa/admin/htdocs/favicon.ico, however it will be replaced on Plesk update.

It is also not possible to make it permanent using custom theme from Plesk branding guide.

Please make a way to customize favicon.ico on permanent basis

The actual MailQueue status is useless, becaus the "status" of the email isnt viewed. This contains the important information for mails with problems.... Please expand it with the status, like it is done win Webim for example

Plesk Obsidian introduced the Dynamic List View Mode and some of our customers are having problems understanding the new GUI.

It would be very helpful to configure the View Mode at the Service Plan level:
- Disable the possibility to change the View Mode
- Configure a default View Mode

add HTTP/3

A a reseller I would like to be able to create my own specific plug-in 'sets' for my WordPress customers. Normally this should be done at this level, not by the 'top level' administrator.

Maybe it is possible to use the same tab and visualize created sets from resellers with an icon.

Implementing the new standard WebAuthn would be the best solution for 2FA.

In Plesk Premium EMail it is not possible to send or receive mails on the address of the public mail folder's name.

It should be possible to send mails from the public mail folder and mails received in it should be visible for other mail-users as in Microsoft Exchange.

Currently, management of additional Apache/nginx directives is available for Plesk Administrators only.

With Apache, it is possible for users to add custom directives via .htaccess file.

However, when running a Plesk server with nginx only hosting and a large number of customers, it takes a lot if time to configure nginx directives manually for each.

It is clear that additional Apache/nginx directives fields are hidden from Plesk users for security reasons, but it would be great to have an ability to enable this feature at your own risk.

Previous same suggestions that have been marked as "declined":
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/34285378
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/38760889
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/19087582

To allow Plesk to work properly with multiple browser tabs under the same user session.
For example with Google Chrome, log in once at Plesk as a dmin then:
Ctrl+Click on Tools&Settings, and then also on Clients
On the clients page, click on "Log In as Customer" and wait for it to load.
Go to the other tab (Tools&Settings) and click somewhere. It will be automatically redirected to Client, instead of staying as Admin for this tab.

Add mcrypt module to Plesk PHP 7.2 and newer.
For previous PHP versions it's included out of the box.

Mcrypt 1.0.2 natively supports PHP 7.2+ (https://pecl.php.net/package/mcrypt/1.0.2)

It's, for example, required by Prestashop 1.7.x, which is quite popular among Plesk users.

At this time, access to spamfilter settings for a mailbox are only possible for admins and website owners. Pls make it possible for logged in mailbox users to access and edit there own spamfilter settings.
It's very important, because on website's with many mailboxes, the admin often cannot support all users in setting up there spam settings.

Please provide Digital Ocean Plesk 1-click installation image on CentOS 8.

CentOS 8 is supported since Plesk 18.0.25: https://docs.plesk.com/release-notes/obsidian/change-log/#plesk-18025

As of now, feature with 178 votes is available in Plesk Onyx 17.9 Preview only: https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/17924536-fail2ban-now-supports-ipv6-please-upgrade

It would be awesome to have this feature available on earlier versions of Plesk Onyx without the necessity to wait until Plesk Onyx 17.9 becomes stable.

Plesk Obsidian is released in the following way:
PSA 18.0.21
PSA 18.0.23
PSA_ 18.0.24
...
Currently, if local repository is used each new version has to be added manually. Automatic synchronization would be a nice feature.

Add the count of messages in the postfix mailq to Advanced Monitoring and Grafana. Then we have the option to get alerts if mailq goes up, in case of spam events!

Since the release of Obsidian, every new microupdate changed significant CSS classes in the Skins, which required our custom skin to be edited each time. However there is no way to deploy the new versions automatically.

My suggestion: Implement a way for Skins to be auto-updated.
The meta.xml-File in the skin could contain a new field like "official_url", which is then regularily checked for a newer version, than the one currently installed.

When the DNS service is not hosted on Plesk, the Let's Encrypt wildcard certificate cannot be renewed automatically. Therefore, please provide us with a way to use our own DNS tools (API or script) to create the TXT record on our side and force the extension SSL It! to finish the issuing by itself.

Allow the possibility to use a custom Hostname for Mail Auto Discovery.

For example:
Having a desginated ServerName for the Mail server requests and use the Auto Discovery to configure the Domains using that ServerName instead of using the Domain name.