I am trying to create an email address policy to create an email address a first.last@domain.com. I want the entire email address as lowercase. I know email address are not case sensitive for Exchange. Corporate wants the email addresses to match users business cards which are all lowercase.

I used this command to try to get it to work, but it creates an email of First.Last@domain.com. Is there something different that needs to be done in Exchange 2013 compared to Exchange 2007/2010?

Set-EmailAddressPolicy -Identity Policy Name -EnabledPrimarySMTPAddressTemplate 
SMTP:%rAa%rBb%rCc%rDd%rEe%rFf%rGg%rHh%rIi%rJj%rKk%rLl%rMm%rNn%rOo%rPp%rQq%rRr%rSs%rTt%rUu%rVv%rWw%rXx%rYy%rZz%g.%s@domain.com

Myself, I'd write a PowerShell script and schedule it to run nightly to change all SMTP addresses to lower case.

Hi,

Similar thread

https://social.technet.microsoft.com/Forums/office/en-US/80bb5b5e-2117-4621-ae02-e1444decb37e/email-address-policy-for-lowercase-email-addresses-in-exchange-2013?forum=exchangesvradmin

And this command should work, but it only get the first 3 letters of first name.

Set-EmailAddressPolicy -Identity "Policy Name" -EnabledPrimarySMTPAddressTemplate "SMTP:%rAa
%rBb%rCc%rDd%rEe%rFf%rGg%rHh%rIi%rJj%rKk%rLl%rMm%rNn%rOo%rPp%rQq%rRr%rSs%rTt%rUu%rVv%rWw%rXx%rYy%rZz%3g%s@domain.com"

Best Regards.