It is important to know that every mail is not valid and safe. Be it signed up recently or decade ago. We must ensure that there is suspicious activities. There are steps involved in verifying whether the email is safe for communication.
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That isn’t always an option, though. You may wish to validate email addresses right away, or you may want to swiftly purge your contact list. Then, you’ll have to employ different techniques.
We’ll go through our advice, the proper technique to check email addresses, and things to avoid below.
There are set of qualities a verified mail account holds like reduced bounce rates, enhancing interfaces, better communications and better security.
If in case the mail is sent through our API, the contacts can be validated through our validation interface. Errors like misspellings, inactive accounts and combined email address through machine learning it is detected.
Through this method the email can be safe to communicate as it is shares the mail storage for better engagement. Delivery rates are enhanced by sending mails to secured accounts rather than scammers. It also ensures that the email is secured and gives a keen watch to the actions.
How not to confirm email addresses
Although there are trustworthy ways to confirm email addresses, there are other approaches that can work against you and damage your sender reputation or produce false results. Even if these techniques make sense in theory, they may have unexpected effects.
VRFY COMMAND
The VRFY command is part of the Simple Mail Transfer Protocol (SMTP) and is used to verify addresses. The VRFY command is used to verify the address when you establish a Transmission Control Protocol (TCP) connection with an SMTP server. The issue is that almost all mail servers prevent address verification using remote connections. Although this seems like a wonderful choice in principle, it’s not the most practical.
BROKEN SMTP HANDSHAKE
Exploiting a faulty SMTP handshake is an additional choice. The final command you would send in a typical SMTP exchange (shown on the left) is “DATA.” The server is informed by this command that the client is prepared to submit the message content. Usually, the server accepts the message after it has been sent, at which point the client can choose to either send another message or hit “QUIT” to stop the connection.
The flawed SMTP handshake is ideal for confirming addresses without threatening reputation or preventing spam. However, it has several problems, including frequent message disconnections, unreliable email sending, and a lack of security. The recipient verb may not indicate anything, as mail servers and anti-spam gateways may delay checking until after the message is received.
Additionally, mail servers use a greylist, blocking the receiver temporarily if the transmitting server is unknown. A simple verification test against a greylisted domain will always return a negative result.To confirm email addresses in your contact list, include a verification link, use our API for secure validation, and avoid using faulty SMTP handshakes.