The method described below will check if an email address is real or not, without sending any email to that address.
First, connect to the mail server at port 25 (SMTP)
telnet smtp.google.com 25
Identify yourself as
Identify your email address as
[email protected] with
MAIL FROM command
MAIL FROM: <[email protected]>
Now use the
RCPT TO command to check if the email is exists or not
RCPT TO: <[email protected]>
Depends on the response you'll know if it's real or not.
In reality, email verifying is not as simple as described above, there are a lot of other things to check like, check for the existence of the server, some server doesn't support
RCPT TO command, there are many different responses, in some case, we might need to check if the email is the disposable one or not,...
check-if-email-exists project from ReacherHQ below for more details.
Every posts that can be found on this site, sorted by last modified date: Computer and Programming Proxying Plausible Inbox Verify email…
Computer and Programming
Notes about technical stuff that I'm interested in: Write ups Implementation notes from my previous projects, some might helpful, but most…
If you think this note resonated, be it positive or negative, please feel free to send me an email and we can talk.