Do we know if commenting it out breaks it for non-gmail people?
That's interesting because I use Gmail and I can only send out mail if I enabled SMTP. I wonder if the difference is because I'm using the business service and not a regular Gmail account?
I was using a Google Apps account too and it wouldn't let me......maybe it is server configuration related? I can't see this...but who knows! Are you using the newest version of helpers @Karsen? It would be commented out line 138?
I used a custom mail function. At the time I needed to use two different email accounts and they required different credentials so I modified it. I just tested the regular helper function with it commented out and it worked for me, so I have no idea why SMTP was required back when I first set it up!
Similar to @mudmin having used it for awhile and then all of a sudden it didn't work! So I'm thinking maybe this is a depreciated setting that breaks stuff now!
That's what I'm thinking. Something had to change on google's end.
@mudmin I'm going to have to explore this more
It seems to be server-based on if the SMTP mailer is going to work or not
On localhost, I connected to Gmail's SMTP server, had to uncomment the isSMTP() function as phpMailer wasn't on my localhost, and then when I deployed my repo onto my cP dev site, it failed and could not send, in which case I had to comment the line back out and revert to using the phpMailer.
Any idea on what might be causing this? Would it be something in my firewall do you think?
So if everyone's mailers are working - then we are good to leave it out 
