Reply-to address and BCC to CRM

How to do it

1. Open the mailbox → General tab.
2. Under Sender Identity, tick "Send replies to a different address" and enter the address (placeholder shows replies@yourdomain).
3. Under "BCC to CRM", enter one address in "BCC Address" — the address your CRM gives you for logging emails (placeholder bcc@yourcrm.com). Leave it blank for no copies.
4. Click "Save Changes" in the bar at the bottom of the page. The field takes one email address, and it can't be one of your connected mailboxes: anything else is refused (for one of your mailboxes: "That's one of your connected mailboxes — use your CRM's BCC address.").

Good to know

• The reply-to address is stamped on campaign emails, task emails, replies, forwards and test sends from that mailbox (not on warmup emails). Leaving the box unticked clears it.
• What is copied to the BCC address: automated campaign emails (email and Multi Channel campaigns, and subsequences), manual emails sent from Tasks, replies you send from Replies (or through Claude's send_reply) and forwards. Never copied: warmup emails, test emails (Send Test on a mailbox, or a step's test send) and MailFleet's own system mail.
• The copy is added on delivery only — the email carries no Bcc header — so the lead never sees the CRM address.
• The copy is the same email the lead gets, so a CRM that loads its images can register an open on it.
• A forward to several people goes out as one email per person; the CRM gets one copy (with the first), or none when the CRM address is one of the people you forwarded it to.
• No copy is sent, and the email goes out as normal, when the saved value isn't one email address (for example "a@x.com, b@x.com" from an import — the General tab says so until you change it), when it is the mailbox's own address (the tab says so: a copy there would land in the inbox MailFleet reads for replies), or when the CRM address is already a recipient of that email.
• If the CRM address is refused, the email to the lead still goes out; only the copy is lost. If the lead's address is refused — while sending, or by a bounce later — the send fails or bounces exactly as it would without a copy, but the CRM may still have received its copy.
• A bounce or delivery notice about the CRM address never marks the lead bounced and doesn't show in Replies, and an automatic reply from the CRM address (an acknowledgement or out-of-office) isn't logged as the lead's reply.
• A copy doesn't take another slot from the mailbox's Emails Per Day — each email counts once. Your email provider may still count the CRM address as a recipient toward its own daily limits (Google Workspace limits recipients per day as well as messages).
• Both fields accept up to 320 characters and can also be set on import with the reply_to and bcc CSV columns.
• Reply detection still reads the mailbox's own inbox; if replies are redirected elsewhere, make sure that inbox is one MailFleet can read or use Settings → Reply forwarding instead.