@Komal-Sharma Thanks a lot!! Fixing the host-string did the trick
Have a great day!!

@Komal-Sharma Thanks a lot for your reply.

uvdesk version from bottom of backend: V -1.1.0

Regarding below data, serverdomain.ch is the replacement for my actual server address. This resolves perfectly, it is the server i'm running uvdesk on. I have also tried localhost as well as the specific cpanel accounts domain, but both result in the same error message.
Also vmb@mydomain.ch is a replacement for the address I'm actually using This email has also already an email in it's inbox.

To be sure it's not password related, I have replaced the password already once, but it didn't help.

[SWIFTMAILER]
Note: SMTP seems to work, I was successfully able to reset my password for logging in and it did send me an email. Maybe it was sent via php sendmail, i actually didn't check that.
Mailer ID: VOH VMB
Transport Type: SMTP
Enable Delivery: Checked
Server: serverdomain.ch
Email: vmb@mydomain.ch
Password: PasswordOfCourse
Port: 465
Encryption Mode: SSL
Sender Address AND Delivery Address: both empty

[MAILBOX]
ID: VOH_VMB
Name: VOH VMB
Enable Mailbox: Checked
Permanently delete from inbox: Checked
Transport: IMAP
Host: serverdomain.ch
Username/Email: vmb@mydomain.ch
Password: Password
Swift Mailer ID: VOH VMB

[EMAIL SETTINGS]
Email ID: vmb@mydomain.ch
Name: SIB Help Portal
Swiftmailer ID: VOH VMB

Thanks very much

Hello Everyone,

I just thought of trying uvdesk, but seems there's no chance of receiving emails.
When i issue the following command:

php bin/console uvdesk:refresh-mailbox vmb@mydomain.ch

I get the following output:

1. Processing uvdesk mailbox configuration.
2. Opening imap stream...

In RefreshMailboxCommand.php line 93:
 Warning: imap_open(): Couldn't open stream serverdomain.ch

uvdesk:refresh-mailbox [-t|--timestamp TIMESTAMP] [--] [<emails>...]

Fatal error: Uncaught ErrorException: Notice: Unknown: Can't open mailbox serverdomain.ch: no such mailbox (errflg=2) in Unknown:0
Stack trace:
#0 [internal function]: Symfony\Component\ErrorHandler\ErrorHandler->handleError(8, 'Unknown: Can't ...', 'Unknown', 0, NULL)
#1 {main}
 thrown in Unknown on line 0

It says in the below section "cannot open mailbox serverdomain.ch"... What does that mean? serverdomain.ch is the servers domain name, not a mailbox, this error message is either wrong, or serverdomain.ch is being taken as mailbox which of course doesn't work. Above in red it says couldn't open stream serverdomain.ch so that makes more sense.

Regarding the Mailbox Suggestion I mention in the title: If I edit the mailbox and do not enter a password, please save the data without the password and do not force me to enter the password everytime I wanna update mailbox settings, that makes no sense. When I enter a password into the password field, I want the password to be updated, if I leave the password field empty, I do not want it to be updated, only the rest of the information should be updated then. It's annoying having to open the password manager everytime just because I wanted to update the mailbox settings Especially when debugging this becomes tiring.

Mailparse (v3.1.4 ) is installed, curl (v7.61.1) is active as well as mbstring (v1.3.2 )..

Any ideas what could be happening?

Thanks and have a great day!
Cheers,
Oli