The UTORmail migration to UTmail+ is tentatively scheduled to start at 5pm on Wednesday July 4, 2018. The migration should be finished by 9am on Thursday morning. UTORmail users will not be able to access that system during the migration time.
If you have been forwarding your UTORmail (@utoronto.ca email) to your departmental email (@math.toronto.edu or @math.utoronto.ca) then that will be automatically preserved when the UTORmail system is replaced by an Office 365 email system (called UTmail+ at UofT).
You can check if you are forwarding your UTORmail by going to https://utorid.utoronto.ca/cgi-bin/utorid/modify.pl.
If you have been using another email system (such as Gmail or Mac Mail) to access your UTORmail account (via IMAP) then that will no longer work after the migration. You can see http://help.ic.utoronto.ca/content/3/1897/en/utmail-configuring-thunderbird-windows.html for an example of configuring IMAP access to UTmail+ if you still wish to do that.
