Where

Go to Settings → Mailbox and add a mailbox.
Supported providers
- Google (Gmail / Google Workspace) — OAuth sign-in.
- Microsoft Exchange
- Microsoft 365
- Yahoo
- AOL
- GMX
- Namecheap
- IMAP — generic connection for other providers; you'll supply server details and credentials.
After connecting
Each mailbox has its own settings screen:
- Name — label shown across the app.
- CRM email to bcc — BCC address for CRM activity logging.
- Daily Sending Limit — hard cap on sends per day from this mailbox.
- Signature — plus include toggle.
- Opt-out statement — plus include toggle; clicking the link marks the prospect opted_out.
First sends
Send a test email to yourself. Check the From name, signature, and opt-out footer render correctly before any campaign uses the mailbox. Then ramp volume gradually — see Daily sending limits.