What you unlock
Send and reply to emails
Compose new emails, reply to threads, and forward messages — all from within Mantle.
Inbox management
Read, search, label, archive, and trash messages without leaving the workspace.
Draft and template workflow
Create, update, and send drafts so agents can prepare emails for your review before sending.
New-message trigger
Start an agent task automatically every time a new email arrives in the connected inbox.
Connect Gmail
Authorize with Google
Click Connect and sign in with your Google account. Grant the requested permissions so Mantle can read and send
email on your behalf.
Agent tools
Sending
| Tool | Description |
|---|---|
| Send email | Compose and send a new email |
| Reply to thread | Send a reply within an existing email thread |
| Forward email | Forward a message to another recipient |
| Send draft | Send a previously created draft |
Drafts
| Tool | Description |
|---|---|
| Create draft | Create a new email draft for later review |
| Get draft | Retrieve the contents of a specific draft |
| List drafts | List all drafts in the account |
| Update draft | Modify an existing draft |
| Delete draft | Remove a draft permanently |
Reading and search
| Tool | Description |
|---|---|
| Fetch emails | Search and retrieve emails matching a query |
| Fetch message by ID | Get a single message by its message ID |
| Fetch message by thread | Retrieve all messages in a thread |
| Get attachment | Download an attachment from a message |
| List threads | List email threads in the mailbox |
Organization
| Tool | Description |
|---|---|
| Modify email labels | Add or remove labels on a message |
| Create label | Create a new Gmail label |
| List labels | List all labels in the account |
| Create filter | Create an automatic email filter rule |
| Move to trash | Move a message to the trash folder |
Triggers
Triggers fire an agent task automatically when something happens in Gmail.| Trigger | When it fires |
|---|---|
| New Gmail message received | A new email arrives in the connected inbox |
Create a task with a Gmail trigger
Open any agent, go to the Tasks tab, and add a new task. In the trigger picker, choose Integration → Gmail.
Select the event
Choose New Gmail Message Received. This trigger uses polling to detect new messages.
Example use cases
Auto-reply to customer inquiries
Auto-reply to customer inquiries
Trigger: New Gmail message receivedWhen a new email lands in your inbox, an agent reads the subject and body, classifies the inquiry, drafts a personalized response, and saves it as a draft for your review.
Forward invoices to your accounting channel
Forward invoices to your accounting channel
Trigger: New Gmail message receivedAn agent watches for emails with PDF attachments from known vendors, downloads the attachment, and posts a summary with the file to your #accounting channel.
Summarize a long email thread on demand
Summarize a long email thread on demand
Ask your agent to fetch a specific email thread, summarize the key points and action items, and post the summary in your workspace chat.
Troubleshooting
OAuth consent screen shows 'unverified app'
OAuth consent screen shows 'unverified app'
This is normal during setup. Click Advanced → Go to Mantle (unsafe) to proceed. Your data is only accessed by
your own workspace.
The agent can read emails but can't send
The agent can read emails but can't send
Check that the Gmail OAuth scope includes send permissions. Disconnect and reconnect the integration from Settings
→ Integrations → Gmail to re-authorize with full scopes.
Trigger tasks aren't firing
Trigger tasks aren't firing
Gmail triggers use polling, so there may be a short delay. Confirm the task is active (green indicator on the
Tasks tab) and that the trigger is set to Gmail → New Gmail Message Received.
Emails are landing in the recipient's spam folder
Emails are landing in the recipient's spam folder
This is controlled by the recipient’s email provider, not Mantle. Avoid spammy subject lines and ensure your Google
account has a good sending reputation.
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