According to millions of records evaluated by AtData, 8.4% of emails collected in email subscription forms are invalid. This means a subscriber misspelled the email, used a disposable email, or used a fake email address.

What to do with invalid email addresses?

To fix the problem of getting too many invalid email addresses in signup forms, follow the recommendations below:

Email Verification (double opt-in): Require users to confirm their email address by clicking a confirmation link sent to their email address during subscription. Users who do not confirm their email address after a particular period should be removed from your email list. This will prevent adding non-existent email addresses to your email list.

Email List cleaning: Periodically review your email list and remove addresses that consistently bounce back or do not exist. Some email addresses like those of students who have graduated, employees who have left an organization, and domains that have expired do get deleted. You can use SendGrid email validation API to automatically check whether an email is valid.

Email validation in signup forms: Ensure that your signup forms have proper validation checks to reduce typos or incorrect entries. Use features like auto-suggestions or dropdown menus to minimize mistakes. For instance, an email address should have a @ sign and end with a domain extension (.com, .org, .net, .edu, etc). It is possible to create email subscription forms in a way that the email field does not accept submissions for emails that miss the @ sign or domain extension.

By implementing these recommendations, you can significantly reduce the number of invalid subscriber emails.