Is it possible to secure webmail of domains with no hosting. For example, via Let's Encrypt extension?
Currently, there is no such functionality available in Plesk.
Participate in future product development by voting for this feature on our User Voice portal.
The top-ranked suggestions are likely to be implemented in the next Plesk versions.
Note: since Plesk Obsidian 18.0.23. an SSL certificate can be added in Domains > example.com > SSL/TLS Certificates even if no hosting is used.
- Enable hosting for domain at Domains > example.com > Hosting settings > click Change and set Hosting type to Website hosting.
- Install the certificate for webmail according to the article How to install an SSL certificate for a domain in Plesk