Reply to lead
Send an email reply to a lead from Lead Catcher, as you would with the Reply button.
MCP tool mailshake_write → reply_to_lead
write Confirm
Sends one email to the lead from your Mailshake mailbox. Mailshake records it as a one-off send, not a campaign email. If the lead answers, the lead opens again in your queue. Pass move_to_campaign_id to add the person to another campaign in the same step; the campaign must exist and not be a draft. The body is plain text. A sent email cannot be recalled. By default you confirm each call; you can switch that off for this tool.
Parameters
| Name | Type | Description |
|---|---|---|
| lead_id integer required | integer | Lead ID from list_leads. |
| body string required | string | Plain-text body of the reply. |
| move_to_campaign_id integer | integer | Also add the lead to this campaign when the reply is sent. |
tools/call
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "mailshake_write",
"arguments": {
"operation": "reply_to_lead",
"arguments": {
"lead_id": 5530,
"body": "Hi Dana, glad it fits. Plans start per seat, and I can walk you through them in 20 minutes on Thursday. Does 2 pm work?"
}
}
}
}Example response
{
"content": [
{
"type": "text",
"text": "{ ... same JSON as structuredContent ... }"
}
],
"structuredContent": {
"lead_id": 5530,
"status": "sent",
"sent_as": "one-off",
"to": "dana@brightpath.example",
"subject": "Re: Quick question about your client reporting",
"sent_at": "2026-10-22T08:05:00.000Z"
},
"isError": false
}