Expertise on researching email addresses via crawlers

This project received 5 bids from talented freelancers with an average bid price of $250 USD.

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Project Budget
$250 - $750 USD
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Project Description

we are a mass mailer and email addresses are key to our success. Permanent fatal error codes, SPAM, blocked codes are important to our understanding and determination of what to do with a returned/undeliverable email address.

Also, would like to have my own email server created.

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