Glossary
Opt-in
A person’s active agreement to receive your email.
ValidReach Team · Updated 2026-10-26
In practice
Single opt-in adds them as soon as they submit the form. Double opt-in asks them to confirm by email first. Keep a record of when, where and what they agreed to.
Verification and sending
Opt-in proves permission, and verification proves the address works. A good list has both.