This will increase the clashes for the local part of the address for people with the same first and last name (1.6%).
We are considering several options: one of them is to use "firstname.lastname@example.org" and the other is to use "email@example.com". The first case will avoid the any conflict in the addresses (usernames are unique) but the second is fancier. Which approach do your organization use? How are name conflicts (homonyms) solved? Manually or automatically (e.g., by adding a number)?"