Check if an email address exists without sending an email
dig gmail.com mx
nslookup -q=mx gmail.com
telnet gmail-smtp-in.l.google.com 25
HELLO
mail from:<sender@gmail.com>
- If the server responds with “250 OK” then we can proceed to the next step. Enter the recipient email address using ‘rcpt to’. Replace the test email address with your recipient email address.
rcpt to:<recipient@gmail.com>
- The recipient email address is valid if the server responds with “250 OK”. You should get a server response of “550” as shown below if the recipient email address does not exist.
nslookup -q=mx gmail.com
telnet gmail-smtp-in.l.google.com 25
HELLO
mail from:<sender@gmail.com>
- If the server responds with “250 OK” then we can proceed to the next step. Enter the recipient email address using ‘rcpt to’. Replace the test email address with your recipient email address.
rcpt to:<recipient@gmail.com>
- The recipient email address is valid if the server responds with “250 OK”. You should get a server response of “550” as shown below if the recipient email address does not exist.
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