Is there a tool that where we can upload email lists to check for the validity of a particular email id. There are 2 levels of verification i'd ideally want: 1. Syntax and format verification 2. Account Verification - to check if this account really exists. Thanks!
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Add AnswerNaman, you can write a script to check the first part. There are a ton of javascript validators, but you can use your favorite scripting language to validate your email addresses. Checking the actual 'existence' of an email address is much more difficult, since any domain can contain any number of mailboxes.
To check to see if the domain can accept email, you can do a dns lookup on that domain to see if actually has valid MX records. If so, you at least know that the domain you are contacting will have mailboxes. You can then hope that the mailbox you choose actually exists there. Be sure to check your bounce messages.
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