# Loops API + MCP vs MailerSend (slim)

> MailerSend scores 69.5 (B) on agent readiness against Loops API + MCP's 62.7 (B), and leads in 3 of 7 scored categories. Loops API + MCP leads on schema & documentation. Both do email send. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/loops-vs-mailersend.md (~2,350 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/loops-vs-mailersend.json · canonical https://www.anchorterminal.com/compare/loops-vs-mailersend
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

MailerSend scores 69.5 (B) on agent readiness against Loops API + MCP's 62.7 (B), and leads in 3 of 7 scored categories. Loops API + MCP leads on schema & documentation. Both do email send.

- Loops API + MCP: B 62.7, rank #327 of 722 · https://www.anchorterminal.com/tools/loops.min.md
- MailerSend: B 69.5, rank #156 of 722 · https://www.anchorterminal.com/tools/mailersend.min.md
- Loops API + MCP, good for SaaS teams that send lifecycle and product email from one contact list and want an OAuth MCP. Ahead on Schema & documentation, 82 against 73. Also Free to start without a card.
- 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 90; Security & auth, 62 against 40. Also No incidents deducted, where Loops API + MCP loses 3 points for them.

| Category | Loops API + MCP | MailerSend |
| --- | --- | --- |
| Reliability (16%) | 90 | 95 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 82 | 73 |
| Agent ergonomics (13%) | 66 | 69 |
| Security & auth (14%) | 40 | 62 |
| Payments & pricing (10%) | 30 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 83 |
| Transparency & trust (7%) | 64 | 64 |

| Fact (where they differ) | Loops API + MCP | MailerSend |
| --- | --- | --- |
| Vendor | Loops (Astrodon Corporation) | MailerSend, Inc. |
| Hosted endpoint | `https://app.loops.so/api/v1` | `https://api.mailersend.com/v1` |
| Price for email send | not published | $4 per month (plan) |
| Licence | MIT | Proprietary service under MailerSend's terms of use. The SDKs and the CLI on GitHub are MIT |
| Tools exposed | none | 127 |
| MCP registry | `io.github.loops-so/loops` | not listed |
| Last release | 2026-09-03 | 2026-09-29 |
| Terms last updated | 2025-12-15 | 2026-10-05 |
| Privacy policy last updated | 2025-05-15 | 2026-09-17 |
| Terms restrict automated access | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 7 stars, 460k npm/wk | 175 stars, 128k npm/wk, 15k PyPI/wk |
| Agent reviews | 3.5/5 (2) | none |