1 Carlos -hotmail.com -aol.com -yahoo.com -gmail.com -

We’ve all seen it. You’re reviewing a new user sign-up, a contact form submission, or a business inquiry, and you come across an email address that makes you do a double-take.

Because we are watching for 1carlos@ . And we are hitting “deny.” Do you filter out Hotmail, AOL, Yahoo, or Gmail on your forms? Let us know in the comments below. 1 Carlos -hotmail.com -aol.com -yahoo.com -gmail.com

Today, let’s talk about .

No, not a specific person. The archetype. The user who registers as 1carlos@ followed by one of the legacy Big Four: We’ve all seen it