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Welcome to the Return Path SPF/Sender ID Validator

The ISPs are moving aggressively to win the battle against spam. If it seems like the rules change all the time, it's because they do: keeping ahead of the spammers demands a dynamic approach. One aspect of the approach is Proof - making sure that email senders are who they say they are.

To prove your standing as a "white hat" sender, Return Path recommends that you publish an appropriate mix of authentication records, especially those required by ISPs which represent large segments of your list. To help you ensure compliance, Return Path has made this Validator available free of charge to our Delivery Assurance Solutions clients.

Validate now!