What can an AI agent do with Reacher?

A Reacher AI agent can verify individual email addresses, bulk-check entire lists, inspect domain deliverability, and retrieve past verification results. It can run automatically on a schedule (e.g. nightly list audits) or on demand (e.g. verify every new lead as it arrives). All verification actions are read-only, no email is ever sent during the process.

Does Reacher actually send emails to verify addresses?

No. Reacher uses SMTP handshakes, MX record lookups, and catch-all detection to determine deliverability without sending any message. This means no deliverability risk and no notification to the address being checked.

What is catch-all detection and why does it matter?

A catch-all domain accepts every email sent to it regardless of whether the mailbox exists, making standard SMTP checks unreliable. Reacher flags these domains so your AI agent can mark those addresses as risky and exclude them from campaigns or segment them for separate treatment.

Can my AI agent verify emails as leads come in?

Yes. You can configure a task that triggers on each new lead (via webhook or CRM sync) and calls Reacher to verify the address in real time. Invalid or risky addresses can be flagged, routed, or blocked automatically before they enter your pipeline.

Marketing

Reacher, run by an agent.

An AI agent that verifies email addresses and checks domain deliverability in real time.

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What needs your approval

Reacher never changes anything without you.

Anything that creates, edits or deletes in Reacher waits for your approval. Approve a recurring task once and it runs unattended after that.

Connecting Reacher

About 5 minutes

Auth: API key
Setup: About 5 minutes

Where to get access

Get your API key from your Reacher account dashboard.

reacherapp.com

Example tasks

Real work people hand to an agent that uses Reacher.

clean email lists before sending campaigns to reduce bounce rates
verify leads as they come in and flag invalid addresses before they enter your CRM
check catch-all domains to identify risky addresses that always accept mail
audit an existing contact database and export only verified, deliverable addresses