The feature is available since Plesk Obsidian Release Candidate 3 (RC3 18.0.17) https://docs.plesk.com/release-notes/obsidian/change-log/#contents-18-rc30
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362 votesopen discussion · 51 comments · Feature Suggestions » Security · Flag idea as inappropriate… · Admin →
Since Plesk Obsidian RC4, users’ Microsoft Outlook and Thunderbird mail clients can now be automatically configured based on entered emails.
Yes please! this feature would save my company hundrets of hours (= $$$) of phone support, that currently are "wasted" on helping end users to setup their email in outlook, iphone or android phones.
Thank you for your input! We will consider this functionality in upcoming releases if it will be popular.
Everyone, please continue voting for this feature if you consider it important.
— IBSven commented
this feature was present in 9.5.4 and parallels didn't need a uservoice to REMOVE it... so parallels shouldn't need one to PUT IT BACK. just do it.