Outreach channelsAvailableAdmin setup

Run Gmail and Google Calendar outreach from your own Workspace.

Authorize one Google service account with domain-wide delegation, then verify the mailboxes your team will use for Gmail sequence steps and calendar invitations.

Connect Google Workspace Read setup guide

Requires Google Workspace admin access.

What you get

One admin authorization

Upload service-account JSON and authorize the required scopes once at the domain level.

Multiple sender mailboxes

Verify and manage mailboxes without collecting each sender's password.

Two distinct capabilities

A mailbox may be calendar-capable, Gmail-capable, or both. Both states are shown.

Your sender identity

Messages and invitations are sent through the customer's Workspace mailboxes.

Sender controls

Sender verification, connection state, signatures, and separate channel limits where applicable.

How it works

Step 1
Create a service account
Step 2
Grant domain-wide delegation
Step 3
Upload the service account JSON
Step 4
Verify your senders
Step 5
Use verified senders in a campaign

Create a service account Grant domain-wide delegation Upload your service account Verify your senders How sending works Add sender signatures Sender connection states Reconnect a disconnected sender Connect Google Calendar accounts

Supported actions and data

Tantra can do

Send threaded Gmail steps as part of a sequence
Create Calendar events and send Google Calendar invitations
Detect replies, clicks (when enabled), bounces, and unsubscribes

Tantra receives

RSVP Yes, No, or Maybe from calendar invitees
Inbound Gmail replies and bounce notifications

Requirements and permissions

Google Workspace admin access
A Google Cloud project with a service account
Domain-wide delegation granted for the required scopes
Sender mailboxes in the authorized domain

Good to know

Gmail and Calendar capability checks are separate; a mailbox can be one, both, or neither.
Calendar invitation campaigns and sequences are separate campaign paths.
Consumer Gmail accounts are not supported on the live sending path.
Google Workspace is required only for Calendar campaigns or sequences containing Gmail steps. A social-only sequence does not need it.

Frequently asked questions

Do you store our Google password?: No. Sending uses a customer-supplied service account with domain-wide delegation, not a stored password or per-user OAuth token.
Can we use a personal Gmail account instead of Workspace?: No. The live sending path requires a Google Workspace domain with an authorized service account; consumer Gmail accounts are not supported.
Do calendar invitations and Gmail sequences use the same setup?: They share the same service account and domain-wide delegation, but calendar invitation campaigns and sequences are separate campaign paths.