We are a school for Example staff name is Justin Holden and the current email address format for staff is: First Initials of the first name and first two letters of the surname i.e JHO@myorg.como.sch.uk
The students email format is, Year they start followed by the first initials of first name and surname.
i.e if the student name is Johanne Bayley email will be email@example.com
Now our school has joined a new trust called Russell Trust and they already use O365
Their current email format for the staff is Nathan.West@russelltrust.org.uk
The trust wants to maintain a standard mail address format around the trust and now they have created sub domain for us i.e. myorg.russelltrust.org.uk
So once we migrate to O365 , the staff email address will change from JHO@myorg.como.sch.uk to Justin.Holden@myorg.russelltrust.org.uk
Now for the students, will it be possible to maintain the same user naming convention
firstname.lastname@example.org or will it become email@example.com
Any help and suggestions will be great.