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The questions we get asked most.

Deliverability

What is a DMARC policy?

What is a DMARC record?

What is a PTR record (reverse DNS), and does email need one?

What is a spam complaint rate, and what threshold do Gmail and Yahoo enforce?

What is a spam trap, and how do I avoid hitting one?

What is an email suppression list, and what belongs on it?

What is an email validation API?

What is an MX record, and do I need one to send?

What is ARC (Authenticated Received Chain)?

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