|The format of the email address is incorrect. E.g. ab@firstname.lastname@example.org
|Meaning that no emails should be sent to these addresses. E.g. email@example.com
|Hard bounces are caused by email addresses that do not exist.
|Bad MX / Domain
|Email addresses with domains that are not configured properly. These emails will bounce.
|Email addresses with the sole purpose to collect spam. Never send to these addresses.
|Domains that accept any email addresses that are either real or fake, but always return a clean value. This list may contain bounces and clean results.
|Email addresses that have been rejected or deferred after multiple checks without a confirmed result. Emails marked Suspicious may bounce.
|The mailserver returned an unexpected result and we could not determine the status. Emails marked Unknown may bounce.
|The email provider was taking too long to respond to our queries. You can download and re-upload this list. All Timeout email credits are refunded. The server may have been too busy to respond to our request you can re-upload this list to be cleaned later.
|This is an email address that exists and is ready to receive mail.