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InboxKit sells sending domains and dedicated cold-email inboxes, and Oneprofile connects to it directly. Buy inboxes there, then bring them into a sender profile here without ever seeing a Google consent screen.
The Import from InboxKit dialog listing an inventory of mailboxes with their domain and status, checkboxes beside each one, a Daily send limit field, and an Import button.

The Import from InboxKit dialog, picking inboxes to add.

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Bring inboxes into a sender profile

1

Open the import dialog

On the Mailboxes tab, click Import from InboxKit.
2

Pick from your inventory

Search or scroll InboxKit’s live inventory and tick the inboxes you want. A domain still authorizing finishes on its own and imports its mailboxes once ready.
3

Set a limit and import

Leave Daily send limit blank to use the default, then click Import.

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Manage the connection

The InboxKit tab under Connections holds everything about the standing connection, reached from Manage in Settings in the import dialog. Two automation toggles, Add new inboxes automatically and Disconnect removed inboxes automatically, sit above a Domains table tracking each one’s authorization. An Import history lists every past run. Change API key replaces the stored key without disturbing mailboxes already imported. Disconnect InboxKit or Remove everything sit in the Danger zone at the bottom.

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Good to know

No. InboxKit inboxes authorize themselves, so nobody sees a consent screen or types a password.
InboxKit is still proving that domain is yours. Its mailboxes import automatically the moment that finishes.
Nothing about your imported mailboxes changes. Oneprofile just stops checking InboxKit for new or removed inboxes.
You choose: disconnect them and keep their history, or delete them along with it.

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Next steps

Connect a mailbox

Connect a Google Workspace or Gmail inbox instead.

Mailbox health and capacity

Check the new inboxes once they arrive.