I'm trying to use the comment field to store the user's mobile carrier SMS gateway as a text variable, and then call it on the SMS Settings under Admin/Product Settings/Server Settings.

For instance, in this way I could send an SMTP message to %mobNo%@%comment% where %comment% could be VTEXT.COM or TMOMAIL.NET, etc.

That would allow me to use the carrier's own SMS gateway to send a text to their subscriber.

Also I had an issue using %firstName% and %sn% in the enrollment reminder email.

Please advise.