This is a common problem and can lead to loads of missed subscribers and customers. WP Valid Email will offer suggestions for the most popular domains and the user can simply click the suggestion to replace the mistake. You can also enable email suggestions on the Wordpress login form (wp-login.php) which should minimize support queries and forgot password requests significantly. The plugin is fully customizable and will work on any form, even gravity forms and other form builders. You can also customize the appearance of the suggestion message to fit in with your own website style. Features Automatically correct user email input mistakes Can suggest all popular domain names & easy to add more Choose any form fields to check for valid emails Easily customize the appearance of the suggestion message CSS Check Wordpress login form as well Fully supported, professionaly written and regularly updated software