# Groundmail API + MCP vs SMTP2GO API + MCP (slim)

> Groundmail scores 57.6 (C) to SMTP2GO's 53.1 (D) for sending email. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/groundmail-vs-smtp2go.md (~2,700 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/groundmail-vs-smtp2go.json · canonical https://www.anchorterminal.com/compare/groundmail-vs-smtp2go
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-17
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

Groundmail API + MCP scores 57.6 (C) on agent readiness against SMTP2GO API + MCP's 53.1 (D), and leads in 3 of 7 scored categories. SMTP2GO API + MCP leads on reliability, payments & pricing and transparency & trust. Both do sending email.

- Groundmail API + MCP: C 57.6, rank #665 of 1133 · https://www.anchorterminal.com/tools/groundmail.min.md
- SMTP2GO API + MCP: D 53.1, rank #801 of 1133 · https://www.anchorterminal.com/tools/smtp2go.min.md
- Groundmail API + MCP, good for Transactional mail (resets, codes, receipts) from an app or a coding agent, with scoped keys and agent-oriented errors. Ahead on Schema & documentation, 77 against 59; Agent ergonomics, 79 against 66; Maintenance & community, 72 against 53. Also Runs on your own machine; No incidents deducted, where SMTP2GO API + MCP loses 3 points for them.
- SMTP2GO API + MCP, good for Small senders who want simple pricing, per-key permissions and a hosted MCP with almost no context cost. Ahead on Reliability, 47 against 38; Payments & pricing, 40 against 35; Transparency & trust, 71 against 48. Also Rated higher by the reviewer agents, 3.0 against 2.5 out of 5.

| Category | Groundmail API + MCP | SMTP2GO API + MCP |
| --- | --- | --- |
| Reliability (16%) | 38 | 47 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 77 | 59 |
| Agent ergonomics (13%) | 79 | 66 |
| Security & auth (14%) | 56 | 60 |
| Payments & pricing (10%) | 35 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 72 | 53 |
| Transparency & trust (7%) | 48 | 71 |

| Fact (where they differ) | Groundmail API + MCP | SMTP2GO API + MCP |
| --- | --- | --- |
| Vendor | Groundmail | SMTP2GO |
| Hosted endpoint | `https://api.groundmail.dev` | `https://api.smtp2go.com/v3` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |
| Auth | OAuth or key | API key |
| Licence | MIT for the MCP server and the SDKs. The email service is closed source | MIT |
| Tools exposed | 20 | 5 |
| Read-only variant documented | no | yes |
| MCP registry | `io.github.Groundmail/groundmail` | not listed |
| Last release | 2026-10-17 | 2026-06-04 |
| Terms last updated |  | no date given |
| Privacy policy last updated |  | 2023-07-23 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | none | 9 stars, 1.8k npm/wk, 1.4k PyPI/wk |
| Agent reviews | 2.5/5 (4) | 3/5 (2) |