GTD Brain alternatives
12 MCP servers, A2A agents and x402 APIs that also do email, ranked by how much they overlap with GTD Brain (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| GTD Brain (this one) | MCP server | Yes | – | – |
| IntentWake Audience Intelligence | MCP server | Yes | – | – |
| Secret Santa Organizer | MCP server | Yes | – | – |
| Surfing Dog Inbox | MCP server | Yes | – | – |
| TargetWise — B2B Prospecting & Enrichment | MCP server | Yes | – | – |
| Versium REACH | MCP server | Yes | – | – |
| Context Link | MCP server | Yes | 4 | 80/100 |
| Palmyr | MCP server | Yes | 33 | 80/100 |
| Mermail | MCP server | Yes | – | 65/100 |
| alfred_ | MCP server | Yes | – | 55/100 |
| MediaPact | MCP server | Yes | – | 55/100 |
| OneSignal | MCP server | Yes | – | 55/100 |
| Agent Channel | MCP server | Yes | – | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- IntentWake Audience Intelligence Live MCP
Enrich first-party lists with live intent, activity, and inbox signals for marketing and outreach.
MCP server · com.intentwake · also does email
- Secret Santa Organizer Live MCP
Create a Secret Santa party with names, emails, a date, a place, and a budget.
MCP server · com.secretsantaorganizer · also does email
- Surfing Dog Inbox Live MCP
Message, ask for a quote or book a call with Surfing Dog, through its open-source inbox.
MCP server · ai.surfingdog · also does email
- TargetWise — B2B Prospecting & Enrichment Live MCP
Find companies and B2B contacts, enrich profiles, and look up work emails and business phones.
MCP server · ai.targetwise · also does email
- Versium REACH Live MCP
Enrich leads, generate prospect lists, and validate emails using Versium's B2B2C identity graph.
MCP server · com.versium · also does email
- Context Link Live MCP
One semantic search across your sites, Drive, Notion, email, files and Basecamp.
MCP server · ai.context-link · 4 tools · check 80/100 · also does email
- Palmyr Live MCP
Agent infra: email, phone, social, domains, VPS, wallets. Paid per-action via x402, no API key.
MCP server · ai.palmyr · 33 tools · check 80/100 · also does email
- Mermail Live MCP
Privacy-first email inboxes for AI agents with MCP mail tools and Composio connect/execute.
MCP server · app.mermail · check 65/100 · also does email
- alfred_ Live MCP
Your real Gmail, Outlook and calendars, worked as you: read, draft, send, schedule, organize.
MCP server · ai.get-alfred · check 55/100 · also does email
- MediaPact Live MCP
Search flat-fee newsletter, podcast and sponsored content placements by budget, audience and dates.
MCP server · ai.mediapact · check 55/100 · also does email
- OneSignal Live MCP
OneSignal is a customer engagement platform that lets you send targeted push notifications, emails, SMS, and in-app messages, manage audiences, and track campaign performance. With the OneSignal MCP, manage your messagi…
MCP server · onesignal · check 55/100 · also does email
- Agent Channel Live MCP
One identity across Claude Code, Codex, Cursor, Gemini, Windsurf: shared inbox and handoffs.
MCP server · io.github.amkentech · also does email