In the field marked Email address, enter your Videotron email address in lower case and without accents.
In the field marked Username, enter your Videotron email address in lower case and without accents.
In the field marked Password, enter your password.
In the field marked Incoming (IMAP) email server: enter imap.videotron.ca
Enter 993 as port
Check Incoming server requires SSL.
In the field marked Outgoing (SMTP) email server: enter smtp.videotron.ca
Enter 465 as port
Check Outgoing server requires SSL.
Check Outgoing server requires authentication
Check Use the same username and password to send and receive email
Click Connect
Configuration is done.