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# Mailshake API

> Every Mailshake endpoint on Cotlet: inputs, JSON Schema, cURL, Python and Node.js examples and an example response for each call.

Source: https://cotlet.dev/docs/api/mailshake

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

15 endpoints for Mailshake, each at its own method and path, called with your API key. Open an endpoint for its inputs, examples and response.

- Base URL: `https://cotlet.dev/api/v1/mailshake`
- Connects with: Your own Mailshake login (a team member; changing sending calendars needs a Mailshake admin)
- Integration page: https://cotlet.dev/integrations/mailshake-api-mcp-server

## Read

Return data and change nothing in the account.

| Endpoint | Description |
|---|---|
| [`GET /campaigns`](https://cotlet.dev/docs/api/mailshake/list_campaigns.md) | Your team's campaigns with title, state, sender and number of emails in the sequence. |
| [`GET /campaigns/{campaign_id}`](https://cotlet.dev/docs/api/mailshake/get_campaign.md) | One campaign with its message sequence: initial email, follow-ups, drips and on-click emails. |
| [`GET /campaigns/{campaign_id}/recipients`](https://cotlet.dev/docs/api/mailshake/list_recipients.md) | Recipients of a campaign, searchable and filterable by what they did. |
| [`GET /replies`](https://cotlet.dev/docs/api/mailshake/list_replies.md) | Most recent replies, bounces, out-of-office notes and unsubscribes with the message text. |
| [`GET /leads`](https://cotlet.dev/docs/api/mailshake/list_leads.md) | Leads from Lead Catcher with status, campaign, recipient and who they are assigned to. |

## Write

Change the account. Calls marked Confirm wait for the user to approve them.

| Endpoint | Description |
|---|---|
| [`POST /campaigns/{campaign_id}/recipients`](https://cotlet.dev/docs/api/mailshake/add_recipients.md) (Confirm) | Add people to a campaign with a name and custom fields for the text replacements in your emails. |
| [`POST /campaigns/{campaign_id}/pause`](https://cotlet.dev/docs/api/mailshake/pause_campaign.md) | Stop all sending for a campaign right away. |
| [`POST /campaigns/{campaign_id}/resume`](https://cotlet.dev/docs/api/mailshake/resume_campaign.md) (Confirm) | Start sending again for a paused campaign. |
| [`POST /campaigns/{campaign_id}/recipient/pause`](https://cotlet.dev/docs/api/mailshake/pause_recipient.md) | Stop or restart the emails of one recipient in one campaign and keep the rest of the campaign running. |
| [`POST /recipients/unsubscribe`](https://cotlet.dev/docs/api/mailshake/unsubscribe_recipients.md) (Confirm) | Add email addresses to your team's unsubscribe list so no campaign emails them again. |
| [`PATCH /leads/{lead_id}/status`](https://cotlet.dev/docs/api/mailshake/update_lead_status.md) | Mark a lead won, lost or ignored, or open it again. |
| [`POST /leads/{lead_id}/assign`](https://cotlet.dev/docs/api/mailshake/assign_lead.md) | Give an open lead to a teammate, or set it to unassigned so anyone can take it. |
| [`POST /leads/{lead_id}/replies`](https://cotlet.dev/docs/api/mailshake/reply_to_lead.md) (Confirm) | Send an email reply to a lead from Lead Catcher, as you would with the Reply button. |
| [`POST /campaigns/{campaign_id}/leads-to-campaign/move`](https://cotlet.dev/docs/api/mailshake/move_leads_to_campaign.md) (Confirm) | Add leads to another campaign, as the Add to Campaign action in Lead Catcher does. |
| [`POST /campaigns/{campaign_id}/follow-ups`](https://cotlet.dev/docs/api/mailshake/add_follow_up.md) (Confirm) | Add a follow-up email at the end of a campaign's sequence, with a delay after the previous email. |

---

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Cotlet is an independent service. It is not affiliated with, endorsed by or sponsored by any of the products listed on this site. Product names are trademarks of their respective owners.

## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.