Then, import the required namespaces at the top of your code file:ĮmailAddressValidator valid = new EmailAddressValidator( "MN110-0123456789ABCDEF-0123") ĭim valid As New EmailAddressValidator( "MN110-0123456789ABCDEF-0123") NET 4.5+ case), see similar topic in MailBee.NET SMTP guide. To learn how to add a reference to (or MailBee.NET.45.dll in. To start with Address Validator, you need to add a reference to, import namespaces and unlock the component. ![]() If the server accepts the recipient and says "Yes, I'm ready to receive message data", the component just resets the connection and disconnects, reporting that the address is correct. This mimics normal send attempt, just without sending actual message data. SendAttempt - test connection, sending EHLO/HELO and MAIL FROM commands, and submitting the given e-mail address string in RCPT TO command.SmtpConnection - test connection to the SMTP MX host.DnsQuery - DNS MX lookup for domain part of the the e-mail address string, to find out the SMTP MX host responsible for e-mail delivery to the domain.RegexCheck - syntax check of the e-mail address string.The following validation levels can be set with EmailAddressValidator.ValidationLevel property (defined by AddressValidationLevel enum): NET Core and UWP editions, only single addresses can be checked at a time. As for memory usage, it stays stable and won't increase even if you run the check for many hours or even days validating millions of addresses. ![]() Another important performance optimization, DNS caching, is also supported, and enabled by default. You can enable it with setting EmailAddressValidator.MaxThreadCount property. The component can check both single addresses and bulks of hundreds of thousands.Īddress Validator supports multi-threading (up to 60 threads) which greatly improves performance and enables up to 100.000 address checks per hour in the most accurate validation mode, SendAttempt.
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