Member Avatar for thjchhu0ngthu

Hi everyone,

could you tell me how to check if email exist in jsp :( ???

thank you.

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  • Latest Post Latest Post by jwenting

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Member Avatar for masijade

If you mean whether or not an email address exists, then send it a mail with a "verification" link inside and wait on the answer.

Edited by masijade because: n/a
Member Avatar for jwenting

well, there's no way to be sure an address exists or not at all.
The address might exist but the server can be set to bounce or delete all incoming mail from your account or domain.
The recipient might choose to ignore your message and not reply to it.
An email sent to a non-existent account doesn't have to yield a bounce either, it can just be ignored and deleted by the mailserver (in order to combat spam, and reduce the massive bandwidth overhead from mail sent to random addresses by spambots, this is getting ever more common, to the point where most mails claiming to be bounced messages are in fact spam and laden with trojans).

As a result you can get both false positives and false negatives.

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