There are two different things happening here.
First one is HTML email not being used for the "New User" email notification.
I'm guessing that a new user was added from the LaGuardia site via:
https://laguardiactl.commons.gc.cuny.edu/wp-admin/user-new.php
Can someone confirm if a LG admin did try to add a new user in this manner?
Since WP Better Emails is not activated on the LG site or network-wide, the email would be sent in plain-text.
About the second issue regarding the email's "From" name, BuddyPress 2.5 removed its older WP mail 'From' filter:
https://buddypress.trac.wordpress.org/changeset/10499
This probably affected the email "From" name when used on sub-sites like LaGuardia.
We could bring back the filter:
add_filter( 'wp_mail_from_name', 'bp_core_email_from_name_filter' );
But bp_core_email_from_name_filter() is deprecated.
Update: I'm wrong. We already disable BP's "From" filter on all sites except the root site with cac_mail_from_name_bypass(). See #2152. So BP 2.5's "From" email filter removal doesn't affect us.
However, I actually like that the "From" name displays the site that is initiating the "New User" email. It helps for debugging purposes.
Do we want to do anything here?
