(just notes showing where some things are in the code)
This one is about where the verify link email is sent.
The text from the email I used to locate the string in the code, is "This message is to verify that the email address you registered with".
It was found at line 346 of file /packages/acs-subsite/catalog/acs-subsite.en_US.ISO-8859-1.xml; the name of the message in that catalog is lt_To_confirm_your_regis.
That message was found in two places, one is the design document for the auth subsystem (line 1250 of file /packages/acs-core-docs/www/xml/kernel/ext-auth-design.xml), and the other is on line 1518 of file /packages/acs-authentication/tcl/authentication-procs.tcl and the full name for the catalog entry is acs-subsite.lt_To_confirm_your_regis .
acs_mail_lite::send_immediately was used in the proc auth::send_email_verification_email to send the verify link email to the user.
There are three mentions of this proc in the file /packages/acs-authentication/tcl/authentication-procs.tcl -- incl the definition starting on line 1502 -- the two uses are line 986 in the proc auth::create_local_account (line 815), and line 1435 in the proc auth::check_local_account_status (line 1400).
I'm guessing the email was sent by auth::create_local_account.
Pausing for now. My next step is probably to read that design document.
-Jim