Behavly sends through your mailbox. It does not send from its own servers under your name, which is why deliverability follows your domain's existing reputation rather than a shared pool.
Connecting
Settings → Email → Connect offers one path: an IMAP / SMTP mailbox. It works with any IMAP or SMTP provider — Gmail, Outlook, Zoho and custom hosts — and replies sync straight back into your Behavly inbox.
One-click Google and Microsoft OAuth is not currently offered. Connect those accounts as IMAP/SMTP mailboxes; with Gmail and Outlook that generally means creating an app password rather than using your normal one.
Managing Accounts
Connected accounts can be paused, labelled and marked primary. Pausing stops a mailbox being used for sending without disconnecting it.
How Many You Can Connect
Mailbox count is a plan limit. Sending across several mailboxes in rotation is a separate, higher-plan feature — having three connected does not by itself rotate between them.
Disconnecting a sending account is recorded in your audit log and raises a notification. Campaigns depending on it cannot send, and the Inbox stops receiving replies for it.