day3
Draft email campaigns in day3 from Claude Code, Cursor or VS Code as editable composer blocks.
Connect it
Settings → Connectors → Add custom connector
URL: https://go.day3.app/api/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://go.day3.app/api/mcp{
"mcpServers": {
"day3": {
"url": "https://go.day3.app/api/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}claude mcp add --transport http day3 https://go.day3.app/api/mcp --header "Authorization: <value>"{
"servers": {
"day3": {
"type": "http",
"url": "https://go.day3.app/api/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}Tools
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