Avoid Mistyped Addresses by Requiring Retyping

Unfortunately, a significant number of people interested in getting on your mailing list may not arrive there because they mistype their email address in the sign-up form.

Fixing these errors on your side is not an option, but you can consider treating email addresses like passwords:

• require that subscribers in spe type them twice and
• check that both entries are the same.

This should reduce the number of obvious errors in email addresses, but unfortunately it makes the sign-up process a bit more cumbersome for the user, which may result in less new subscribers.