Want to edit Mailboxes Module Need Some Help

[Darksider]

So i want to edit mailbox module of sentora.

So basic mailbox module has options to add, edit and delete mailboxes and we have another module to launch mailboxes. 

But i want to edit mailboxes module and add button to access the mailboxes directly without password. Like user just have to click the access button and sentora will automatically login to the webmail.

So how can i do that? Which modules i have to edit and where they are located?

Edit: I found the mailboxes module and added Access button but i can't figure out how can i make that button to access the mailboxes without entering login details.

[Ron-e]

Find/google how to login to Roundcube with php, then get the passwords from the Sentora database, you can learn from other modules how they work and create a link...
But if you have to ask this....