Follow along with the video below to see how to install our site as a web app on your home screen.
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The APS Catalog has been deprecated and removed from all Plesk Obsidian versions. Applications already installed from the APS Catalog will continue working. However, Plesk will no longer provide support for APS applications.
Please be aware: with the Plesk Obsidian 18.0.78 release, the support for the ngx_pagespeed.so module will be deprecated and removed from the sw-nginx package.
I'm not sure what your issues are, because you don't specify, why you think, that your eMail - transportation needs modification. What sort of failures do you notice? To which eMail - hosting providers? It would help as well, if you add some log entries from your mail.log, to help you investigate possible issues and it might help as well, if you add your operating system, the choosen mail - server and your actual Plesk version.