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Before a sequence can send anything, it needs a sender with a connected mailbox behind it. The Senders & mailboxes page is where you set both up.

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Two tabs, one page

The Senders tab lists your sender profiles. A sender profile is one person your sequences send as, and its mailboxes rotate underneath that one name and signature. Click New sender profile to add one. The Mailboxes tab lists every connected email account with its health and daily sending limits. Four tiles filter the list: Mailboxes, Disconnected, Sent yesterday, and Sent today. A fifth card, Capacity left today, shows how many more emails your connected mailboxes can still send today, combined.

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Connect a mailbox

1

Open the connect dialog

On the Mailboxes tab, click Connect mailbox.
2

Choose a sender profile

Pick who this mailbox sends as from the Sender profile field, or leave it on Assign later and assign it afterward.
3

Pick a connection method

Under Connect existing inboxes, click Connect next to Google Workspace / Gmail, the only method live today. Microsoft 365 / Outlook and IMAP / SMTP are marked Soon.
4

Authorize the account

Pick the account you send from and approve the requested access. You land back on the dashboard with the mailbox added.
Only Google Workspace and Gmail connect today. Your workspace admin may need to allowlist Oneprofile first. The connect dialog links to Google’s own admin guide for that.

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Import mailboxes from InboxKit

If you buy dedicated cold-email inboxes from InboxKit, connect them in bulk instead of one at a time. Click Import from InboxKit on the Mailboxes tab, or click Import in the connect dialog’s Buy inboxes section. If your workspace has not connected InboxKit yet, the dialog walks you through that first. Once connected, it lists every inbox in your InboxKit workspace as a searchable table, each row showing its domain and a status of Imported, Ready, Authorizing…, or Auth failed. Tick the inboxes you want, set a Daily send limit if you don’t want the default, then click Import (it counts how many you’ve selected). A newly bought domain can take a few minutes to authorize behind the scenes. A banner on the Mailboxes tab tracks how many have imported so far, even after you close the dialog.

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Invite a teammate to connect their mailbox

Google only grants a mailbox to whoever is signed in at the browser, so you can’t connect a colleague’s inbox for them. Send them a link instead.
1

Open the invite dialog

On the Senders tab, open a sender’s row menu and click Invite them to connect a mailbox…
2

Create the link

Click Create connect link. The link stops working on the date shown, and creating a new one later does not disable the old one.
3

Share it

Send the link to your teammate. They sign in with Google and their mailbox attaches to that sender. They need no Oneprofile account of their own.
If a link leaks or someone leaves, click Revoke all links to kill every link sent for that sender at once.

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Assign mailboxes to a sender

A mailbox only sends through a sequence once it belongs to a sender. Open a sender from the Senders tab and tick the mailboxes it should use. Unticking a mailbox leaves it connected. It just sits unused until you assign it elsewhere.

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Health hints

The Mailboxes tab’s Recommendations column shows what to fix on each row, as clickable chips:
  • Reconnect: the mailbox can’t send until you reconnect it
  • Add a sender: nobody sends from this mailbox until you assign it to a sender
  • High bounces: this mailbox’s bounce rate is above the alert threshold
  • Add signature: emails send with no signature until you set one
A disconnected mailbox pauses every sequence that depends on it. That’s why the tab also surfaces a warning banner and a Disconnected tile the moment one drops.

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Next steps