What is a Catch All email address ?
What is a Catch All E-mail address or “Unknown” email? When you verify an email address to determine if it’s valid or invalid, sometimes you can’t get an accurate response, so the email is labeled this way.
Catch All Email
The largest percentages of these Unknowns are Catch All, basically this e-mail addresses servers accept all emails.
The best way to explain this is to use the analogy of you receiving a letter at your house, delivered to your mailbox. Compared to if you live in a condo development with hundreds of different people but one main Mail-room to ACCEPT all mail.
Your house has one single address that the mail can only be delivered to, your mailbox, if you don’t live their anymore, then the mailman returns to sender (bounce back).
A condo on the other hand has one basic mail room for everyone, so all mail is accepted and then gets distributed once a gets inside. At the condo, some people may have moved, don’t live their anymore etc, but the mail was ACCEPTED. This would be where email verification ends, so we are not sure.