Are you on a Maker plan? If so, are the users who aren’t getting the PIN email using a personal or business email address? Business email addresses aren’t may not be used with apps on the Maker plan. You can read more about this here.

If you have a different plan, the PIN email is usually being delivered, but it was filtered into a spam or promotion folder. Have them search their whole inbox for an email from “no-reply@auth.appnotify.io”.

It’s rare, but occasionally a mail server will block a PIN email because it thinks the email is a phishing scam. This usually happens when the app name includes suspicious words, like “account”, “bank”, etc.

If they still can’t find the PIN email and you’re not on a Maker plan, you’ll need to provide Glide support with an example email address so they can check the logs.