# Groundmail API + MCP vs MailerSend (slim)

> MailerSend scores 69.5 (B) to Groundmail's 57.6 (C) for sending email. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/groundmail-vs-mailersend.md (~2,700 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/groundmail-vs-mailersend.json · canonical https://www.anchorterminal.com/compare/groundmail-vs-mailersend
- 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

MailerSend scores 69.5 (B) on agent readiness against Groundmail API + MCP's 57.6 (C), and leads in 4 of 7 scored categories. Groundmail API + MCP leads on agent ergonomics and payments & pricing. Both do sending email.

- Groundmail API + MCP: C 57.6, rank #665 of 1133 · https://www.anchorterminal.com/tools/groundmail.min.md
- MailerSend: B 69.5, rank #195 of 1133 · https://www.anchorterminal.com/tools/mailersend.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 Agent ergonomics, 79 against 69; Payments & pricing, 35 against 30. Also Runs on your own machine.
- MailerSend, good for An agent sending transactional email for an owner who wants scoped tokens, a hosted MCP server and low entry prices, with SMS and WhatsApp on the same API. Ahead on Reliability, 95 against 38; Security & auth, 62 against 56; Maintenance & community, 83 against 72; Transparency & trust, 64 against 48.

| Category | Groundmail API + MCP | MailerSend |
| --- | --- | --- |
| Reliability (16%) | 38 | 95 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 77 | 73 |
| Agent ergonomics (13%) | 79 | 69 |
| Security & auth (14%) | 56 | 62 |
| Payments & pricing (10%) | 35 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 72 | 83 |
| Transparency & trust (7%) | 48 | 64 |

| Fact (where they differ) | Groundmail API + MCP | MailerSend |
| --- | --- | --- |
| Vendor | Groundmail | MailerSend, Inc. |
| Hosted endpoint | `https://api.groundmail.dev` | `https://api.mailersend.com/v1` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |
| Price for sending email | not published | $4 per month (plan) |
| Licence | MIT for the MCP server and the SDKs. The email service is closed source | Proprietary service under MailerSend's terms of use. The SDKs and the CLI on GitHub are MIT |
| Tools exposed | 20 | 127 |
| MCP registry | `io.github.Groundmail/groundmail` | not listed |
| Last release | 2026-10-17 | 2026-09-29 |
| Terms last updated |  | 2026-10-05 |
| Privacy policy last updated |  | 2026-09-17 |
| Customer content may train models |  | yes |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | yes |
| Arbitration or class-action waiver |  | yes |
| Popularity | none | 175 stars, 128k npm/wk, 15k PyPI/wk |