sendmux-sdk

Name: sendmux-sdk Review
Item: sendmux-sdk
Rating: 3.0
Author: Aaron Matthews

Skill Communication Usable

Works inClaude Code

Usable Scanned — metadata only

Reduces email integration friction across six languages with unified APIs, enabling teams to standardize communication infrastructure without reinventing cli…

Official monorepo of SDKs, CLI, and MCP servers for Sendmux email APIs across TypeScript, Python, Go, PHP, Rust, and Ruby.

Ask Claude to generate email sending code for your application using Sendmux APIs.
Automate bulk email delivery through Sendmux infrastructure across multiple programming languages.
Find email API integration examples for TypeScript, Python, Go, or PHP projects quickly.

65 starsMIT (commercial OK)FreeQuick setup

Usable rating — This tool is functional but has notable gaps. Review the evaluation notes below before deploying.

Why it matters

Reduces email integration friction across six languages with unified APIs, enabling teams to standardize communication infrastructure without reinventing client libraries per language.

Best for

Engineering teams standardizing email delivery across polyglot backend services or microservices architectures.

Works in

Claude Code Claude Cowork Claude Chat

Source

https://github.com/Sendmux/sendmux-sdk

By Sendmux

How to Get It

Option 1: Claude Desktop App (Code Mode)Click the + button next to the prompt box → Plugins → Add plugin. Search and click Install. Skills work in Claude Code only.

Option 2: Paste into Claude CodeCopy the command below and paste it into your conversation. Claude will install it.

Command

claude plugins install Sendmux/sendmux-sdk

Tip: Paste this into a Claude Code conversation. Verify command matches your Claude Code version.

Auto-generated from the tool's public listing — not hands-on verified. Cross-check against the source repo's README before running.

First thing to try

After installing, paste this into Claude:

Generate email sending code for my application using Sendmux APIs

CostFree

Trust Signals Auto-scanned

Stars65Last updated2026-09-19LicenseMIT (OK for commercial use)Known CVEsNone foundSources: GitHub Advisory Database + OSV.dev · Scanned 2026-09-19 · scanner v1

Community Pulse New

No community discussions found yet. This doesn't mean the tool isn't good — it may be new or serve a niche use case.

Reviewer notes

Auto-scanned review. These are observations, not a security certification.

Scored from trust signals (evidence-eval-v1): 65 GitHub stars; contributors unknown; last commit 0d ago; license MIT.

Things to check

Scanned, not hands-on tested — this entry was auto-scanned from public metadata (GitHub metrics, license, security flags). No reviewer has run it, and no tool-specific limitations have been documented yet.

How to evaluate tools before deploying →

Data shown here comes from public APIs and automated scanning. Reviewer notes reflect one person's experience. This is not a security certification or legal recommendation. Always evaluate tools according to your own organization's policies.

Evaluation Scores

Evaluation

Ease of Use

3/5

Versatility

3/5

Reliability

3/5

Security

3/5

Overall score3.00 / 5.00 UsableEvaluatedSep 2026

Scored from trust signals (evidence-eval-v1): 65 GitHub stars; contributors unknown; last commit 0d ago; license MIT.

← Back to the Claude Observatory