Glossary
BCC
Blind carbon copy: recipients added in BCC receive the message without being shown to the others.
ValidReach Team · Updated 2026-10-26
In practice
It hides recipients from each other but is a poor way to send to a list: replies and bounces come back to you and every recipient shares one message.
Use a sending platform for lists.
Verification and sending
A single bad address in a hand-built BCC list produces a bounce to your own inbox. Verify before sending to a group.