Send Email

Plumbing that everything needs

This is one of those skills that doesn't do anything exciting on its own. It sends an email. Plain text, HTML, or markdown -- it handles the formatting and delivers it via Mailjet.

Where it gets useful is as a building block. A daily digest skill can generate a summary and then call this skill to deliver it. A meeting summarizer can email the notes to attendees. A monitoring script can alert you when something breaks. Every automation eventually needs a "now tell someone about it" step, and this is that step.

How it works

The skill wraps a Python script that talks to the Mailjet API. You give it a recipient, a subject, and content in one of four formats (plain text, HTML, inline markdown, or a markdown file). It sends the email and confirms delivery.

The markdown option is the most useful for skill integration. Write your output as markdown, pass it through --markdown-file, and the recipient gets a nicely formatted HTML email. No HTML templating required.

Why Mailjet

Mailjet has a generous free tier (200 emails per day) and the API is straightforward. The skill is written around Mailjet, but the pattern -- a script that accepts command-line arguments and sends an email -- could be adapted to SendGrid, AWS SES, or any transactional email provider. The skill file includes notes on what you'd need to change.

Setup

1. Download the skill file below
2. Create a directory: ~/.claude/skills/send-email/
3. Save the file as SKILL.md in that directory
4. Set up a Mailjet account and add your credentials to a .env file
5. Create or adapt the Python email sender script (the skill describes the expected interface)
6. Update the YOUR_PATH placeholders in the skill to match your script location