You misunderstood what the app is, it’s only a webview (a stripped down webbrowser). Its setting for webaccess is whether it will load websites outside of hugging chat in the webview.

Although I agree that if it’s a small business, it’s better to outsource it to an established business but if you’re serious about doing it yourself, check out OpenDesk/OpenCode. Also, why use your own hardware? A VPS is much more reliable.

Also, add 2FA

Biggest hurdle would be timing, if you want it sound right… Every speaker should be in sync as much as possible

I run it on bare metal, had no issues whatsoever, if I recall correctly. This was some months, less than a year, ago. Just installed Lyrion over the LMS (love that it’s still LMS ;)

Basically every serious mailserver package has imapsync included. I don’t know what kind of hardware you’re running and what you expect from the server doing the copying but running webmail, search indexes, antivirus, etc will cost you ram. There are solutions aimed at keeping backups of your mail though, I can’t give you recommendations, the only thing I remember is that they don’t give you a normal webmail or imap, instead you get a web-interface aimed at searching through the backup(s)