Resources
The email verification field guide.
Clear, practical guidance on list hygiene, agent workflows, verification policy, domain signals, and responsible deliverability decisions.
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Agent workflows
How to give AI agents an email verification checkpoint with MCP
Connect verification as a native agent tool, then use structured address, mailbox, and risk signals to make safer workflow decisions.
Read the guideCONNECT MCPCALL VERIFY_EMAILACT ON SIGNALS
Product guide
Quick, Standard, or Deepcheck: choosing the right verification depth
A practical framework for balancing speed, evidence, and credit usage across forms, lists, and high-value sends.
Read articleDeliverability
How to clean an email list before a campaign
A simple, repeatable process for preparing CSV or TXT contact data without losing the reasoning behind each result.
Read articleEmail fundamentals
What is a catch-all email domain—and what should you do with it?
Why some mail servers accept every recipient, why that creates uncertainty, and how to handle the result responsibly.
Read articleYour first 100 credits are free
Clean data in. Better sends out.
Start without a card. Add credits only when the product has proved its value to your workflow.