1. Snov.io — email finder, verifier & outreach (affiliate) New affiliate
Why: Email finder, verifier, and outreach in one stack — practical when an agent needs leads plus deliverability checks before send.
2. ClearBounce — email verification API (affiliate) New affiliate
Why: Email verification API to keep agent lists clean — reduces bounces before you burn transactional quota.
3. Postmark — transactional email API (affiliate) affiliate
Why: Transactional email API with strong deliverability — a solid send layer for agent receipts, alerts, and sequenced outreach.
4. SMTP2GO — transactional email (affiliate) affiliate
Why: SMTP/API send with straightforward agent integration — good backup or primary transactional path alongside Postmark.
5. AgentMail — Free 3 inboxes / 3,000 emails/mo free / public · non-affiliate public / non-affiliate
Why: Free agent inbox tier (non-affiliate) — useful when the agent itself needs inbound mailboxes rather than only outbound SMTP.