Originally Posted by till
there is a huge difference:
becoming a client from admin login is a internal permision change within the same software. phpmyadmin and webmail are both different external software packages that authenticate against different system mecahnisms. phpmyadmin authenticates against the mysql user database and webmail authenticates against imap. so in both cases you would have to stire the password as plaintext if you want to allow automatic logins.
You might be right however other providers like cPanel somehow solved this issue and they are using autologin very well. My problem is, one of my clients complained why cant he see his workers' emails anytime. I had to disable password modification in roundcube so he could spy on his workers'. I can relate to what he is saying since he has to know what information is going out and in anytime.
My suggestion would be either to create such plugin or something or maybe an admin login would also help me. As in one login that would give me access to all mails that would be in that group. Easiest way would be a master password that would work with those email addresses that are associated. I dont think this would be a security issue since this password should be set by one person (person managing ISPConfig)
Wish you the best