Channel · Email (SMTP / IMAP)
Email that sends from your mailbox and stops when they answer.
Connect a mailbox that permits authenticated SMTP sending and IMAP access. Outbound OS sends from that identity and syncs matched replies into the lead’s conversation alongside WhatsApp. Provider and organisation policies determine which credentials you can use.
- 01
Sending identity
Your mailbox submits email through SMTP
- 02
Reply mailbox
IMAP synchronises incoming replies
- 03
Lead conversation
Sent messages and matched replies share a thread
Before you connect
What you need ready.
- A mailbox provider that permits SMTP sending and IMAP access
- Provider-approved credentials and server details
- A sending domain with the authentication your provider requires
In your workspace
What this connection makes possible.
A reply removes the lead from its sequence. Daily limits per mailbox and rotation across several senders let you control volume, and every message carries a List-Unsubscribe header.
- Several mailboxes with per-sender daily limits and rotation
- Reply sync over IMAP, threaded on the lead
- Follow-up sequences that stop on reply, opt-out or close
- List-Unsubscribe on every message; opt-outs are respected everywhere
- Credentials encrypted at rest
Connect & verify
Set it up, one step at a time.
- 01
Add a mailbox
Integrations → Email → Add account. Enter the SMTP and IMAP server details and the credentials your provider permits. App passwords depend on the provider and account policy; they are not a universal Microsoft 365 solution.
- 02
Set a daily limit
Choose a limit appropriate for the sender and provider. Rotation spreads volume; it does not guarantee inbox placement or permission to contact an audience.
- 03
Write a template
Templates use {{name}}, {{company}}, {{product}} and {{country}} from the lead record.
Check the whole connection
Send to an address you own, reply from that mailbox, and confirm both directions appear against the correct lead.
FAQ
Email (SMTP / IMAP) questions
Will replies come back into Outbound OS?
Yes, when the mailbox has IMAP details. Replies are matched to the lead and stop its follow-ups.
Can I use Brevo instead of my own mailbox?
Yes. Brevo is supported for sending and reviewed marketing batches to eligible leads who opted in. Incoming replies need a separate receiving route.
Build the rest of your workflow
Make it your own
Connect Email (SMTP / IMAP) to your workspace.
Start with the installation guide, or get help connecting your own accounts.