What is a Catch-all or Accept-all Email?

Catch-all, also known as "accept-all" is a domain-wide setting mail server that is configured to accept all emails sent to the domain, no matter if the specified mailbox exists or not. A catch-all email account is an address specified for receiving all messages addressed to a domain's incorrect email address.

What Catch-all Email Servers can be Validated Using DeBounce?

QQ, Mail.ru, T-online, G Suite, Comcast, Free.fr, Naver, Abv.bg, Bbox.fr and more.

Is it Safe to Send Emails to Catch-all Emails?

The percentage of catch-alls within a set of data is directly correlated with the amount of "Invalid" emails. The higher the invalid rate, the more likely the catch-alls tend to bounce. The catch-alls have a better chance of being "valid" if you have a fairly clean list. Email addresses associated with catch-all email servers are unverifiable. We have noticed catch-alls tend to bounce at half the rate of your original invalid percentage.

How to Validate Catch-all and Hard to Validate Emails From Major Providers?

In the perfect world of Email Validation, there are only two answers: email address is valid, or email address is not valid. But in the real world, other answers make the email validation process more complicated. When DeBounce servers try to reach an external server, these results may be obtained:

Email is Valid
Email is Bounce
Server is Accept-all
There is no definite response - Unknown

Accept-all, also known as a “Catch-all,” is a domain-wide setting where all emails on this domain will be reported as a catch-all. There is no definitive way to determine whether this email is valid. DeBounce has unique methods to validate accept-all emails.

Catch-all Servers That DeBounce Can Validate

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Validate QQ.com and Mail.ru Emails

QQ.com (also foxmail.com) and Mail.ru (also list.ru, bk.ru and inbox.ru) domains are Accept-all and this is why all email validation services are not able to validate these domains (Read full article: What is a "Catch-all" or "Accept-all").

The good news is, DeBounce has unique techniques which can validate some accept-all servers. QQ.com and Mail.ru are included in servers which our engine can validate. This is an important achievement because based on Wikipedia, as of June 2016, 899 million active QQ accounts were recorded. Moreover, Mail.Ru's sites reach approximately 86% of Russian Internet users on a monthly basis and the company is in the top 5 of largest Internet companies, based on the number of total pages viewed. It's easy to guess how many QQ.com and Mail.ru emails maybe exist in an email list. DeBounce can easily check if QQ and Mail.ru emails are valid; despite both are accept-all.

If you have QQ or Mail.ru emails in your list, DeBounce is the only email validation service which can validate them for you. So, please open an account now and happy debouncing.

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Validate t-online.de Emails

DeBounce also can validate t-online.de emails easily with no limitation. There is a considerable amount of limits in validating tonline emails on other email validation tools.

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Validate G Suite Emails

Some G-Suite servers are accept-all and unverifiable. DeBounce uses some specific methods to validate such email addresses. We have built an exceptional engine to validate such email address.

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Validate Comcast Emails

DeBounce also can validate camcast.net emails easily with no limitation. There is a considerable amount of limits in validating comcast emails on other email validation tools.

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Validate free.fr and aliceadsl.fr Emails

Free.fr and aliceadsl.fr are really hard to validate email servers. These providers blocks email validation IPs after 1 or 2 checks. DeBounce can validate free.fr and aliceadsl.fr emails easily.

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Validate naver.com Emails

DeBounce also can validate naver emails easily with no limitation. Naver.com is accept-all and the emails from this domain cannot be validated. But, DeBounce can easily validate emails from this provider.

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Validate GMX Emails

GMX is a really hard to validate email server. This email provider is very sensitive and it is not possible to validate many emails at once. But we have specific methods which enable us to validate many emails from this provider at once. However, the validation speed is relatively lower and you may get more bounces after validation. Be careful: You may get up to 10% bounce rate on GMX domains.

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Validate WEB.DE Emails

WEB.DE is a really hard to validate email server. This email provider is very sensitive and it is not possible to validate many emails at once. But we have specific methods which enable us to validate many emails from this provider at once. However, the validation speed is relatively lower and you may get more bounces after validation. Be careful: You may get up to 10% bounce rate on WEB.DE domains.

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Validate bbox.fr Emails

Bbox.fr is a really hard to validate email server. This provider blocks email validation IPs after 1 or 2 checks. DeBounce can validate bbox.fr emails easily.

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Validate abv.bg Emails

DeBounce also can validate abv.bg emails easily with no limitation. There is a considerable amount of limits in validating abv emails on other email validation tools.

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Validate Rogers.com Emails

Rogers.com is a popular email service provider in Canada. This email server is accept-all. Regular email validation tools cannot validate email addresses from this provider. DeBounce uses its special methods to validate rogers.com emails.