3. The computer-implemented method of claim 2 , wherein: a name of the user account, of which the username is a portion, includes an email address, and the display name is not an email address.
2. The computer-implemented method of claim 1 , further comprising: determining, by the computing system, a display name for the user account; and modifying, by the computing system and before the electronic message is transmitted to the second remote computing device, the electronic message to replace the username with the display name for the user account.