Only Gmail Users Getting Initial Confirmation Email

I’m running into an odd issue where only people with Gmail accounts seem to be receiving the initial “set your password” email - and yes I’ve checked spam folders and other junk mail issues.

The site is hosted on a Godaddy shared account running PHP 7.

The next thing I did was follow the instructions I found on the S2 site that suggests installing the WP Mail SMTP plugin. I configured this with a Gmail account and still only Gmail uses get the email. I tested to my separate Outlook account and nothing comes through.

Any thoughts on what Im missing or what else I can do to get those to come through?