Lindy email signature
Lindy is an AI teammate that runs your inbox from the Gmail or Outlook account you connect. Connect Signatoro to Lindy, and it fetches your current signature before each email it writes.
Lindy and your email
Lindy works in Slack, in its web app, and over iMessage and SMS. You connect your Google or Microsoft email, and Lindy labels your inbox, drafts replies and sends email for you from that account.
Lindy connects to over 1,000 tools, and it supports MCP, so Signatoro connects to it as an MCP server.
Give Lindy your signature
Lindy can fetch your signature from Signatoro before each email, so every email carries the current version. There are two routes: the Signatoro MCP server, or the Signatoro API with a saved key.
Through MCP:
- In Lindy, go to Integrations, click "+ Add" and choose MCP.
- Paste https://signatoro.com/mcp as the Server URL and set the Display name to Signatoro. Leave the credential under Advanced empty: Signatoro signs you in with its own OAuth flow.
- Click Connect and sign in to Signatoro.
- Open the Signatoro server under Integrations. Keep Availability on "Only you", and set Guardrails to "Always allow" so Lindy fetches the signature without asking each time.
- Under Actions, keep get_signature and list_signatures on. A company owner who manages people elsewhere can turn off the member tools.
- Tell Lindy the email signature rule: fetch your signature from Signatoro before every email it sends or drafts, and end the email with it. If Skills is on for your account, Lindy can save the rule as a skill.
Or call the Signatoro API
Lindy keeps API keys as credentials, which it uses when it calls an API directly. The key's value is write-only, so it stays out of every chat.
- On the Signatoro signature page, under "For tools and assistants", click "Generate API key".
- In Lindy, open Settings, then Credentials under Workspace. Click "Add credential", name it SIGNATORO_API_KEY and paste the key as the value.
- Tell Lindy: "Before you send or draft any email, fetch my signature from https://signatoro.com/api/v1/signature with the header Authorization: Bearer SIGNATORO_API_KEY, and end the email with the html or text it returns."
- Send one email to yourself, then open it in your Sent folder and check the signature at the bottom.
Lindy's drafted replies
With the Email drafting routine on, Lindy writes replies to incoming email and saves them to your drafts folder in Gmail or Outlook. The routine has a "Your signature" field for each connected inbox, which takes Markdown and shows above the Lindy line.
On the Signatoro signature page, click "Copy as text" and paste the result into "Your signature". Where the routine shows "Include 'Sent with Lindy'", turn it off to end drafts at your signature. Open one draft before you send it and check that it ends with one signature.
Your signature or your AI assistant's
Lindy sends from the Gmail or Outlook account you connect, so its emails carry your signature. Connect a mailbox where Lindy works as itself, such as a shared support inbox, and its emails there carry an AI assistant signature that says an AI sent it.
Each AI assistant or agent gets its own key or MCP connection and signs as the person it works for or as itself, by default with a line saying it is an AI and whom it acts for. Free includes 1 AI assistant; each person on a Company plan gets 3 AI assistants, and the company gets 3, 10 or 25 agents by size, on top of the people the plan covers.
Add an AI assistant on Signatoro and choose whether it signs as you or as the agent. Through MCP, the Signatoro server tells Lindy to call list_signatures and ask you when it is unclear which signature an email needs. Through the API, save the assistant's key as a second credential and tell Lindy which mailbox it is for.
Lindy email signature questions
How do I add my signature to emails Lindy sends?
Connect Signatoro to Lindy as an MCP server at https://signatoro.com/mcp, then tell Lindy to fetch your signature before every email and end the email with it. Send one email and check the bottom of it in your Sent folder.
Where do I set the signature on Lindy drafts?
In the Email drafting routine, in the "Your signature" field for each connected inbox. Paste your signature there with "Copy as text" from Signatoro.
Can I connect an MCP server to Lindy?
Yes. In Integrations, click "+ Add", choose MCP and paste the server URL. Lindy connects to hosted servers over HTTPS and creates an action for each tool the server publishes.
Can my whole team use one Signatoro connection in Lindy?
Each person connects their own. A connection shared with the workspace makes everyone's Lindy act as that one account, so it would hand everyone the same signature.
Sources
Checked against Lindy's documentation on October 11, 2026.