feat: add himalaya email CLI skill
Add skill for Himalaya (https://github.com/pimalaya/himalaya), a CLI email client supporting IMAP, SMTP, Notmuch, and Sendmail backends. Includes: - SKILL.md with common operations (list, read, reply, forward, send) - Configuration reference for Gmail, iCloud, and generic IMAP/SMTP - MML (MIME Meta Language) composition guide for attachments Tested with iCloud IMAP account - verified folder listing, email reading, and sending work correctly.
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Dante Lex
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Peter Steinberger
Peter Steinberger
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skills/himalaya/references/message-composition.md
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182
skills/himalaya/references/message-composition.md
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# Message Composition with MML (MIME Meta Language)
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Himalaya uses MML for composing emails. MML is a simple XML-based syntax that compiles to MIME messages.
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## Basic Message Structure
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An email message is a list of **headers** followed by a **body**, separated by a blank line:
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```
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From: sender@example.com
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To: recipient@example.com
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Subject: Hello World
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This is the message body.
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```
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## Headers
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Common headers:
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- `From`: Sender address
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- `To`: Primary recipient(s)
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- `Cc`: Carbon copy recipients
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- `Bcc`: Blind carbon copy recipients
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- `Subject`: Message subject
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- `Reply-To`: Address for replies (if different from From)
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- `In-Reply-To`: Message ID being replied to
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### Address Formats
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```
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To: user@example.com
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To: John Doe <john@example.com>
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To: "John Doe" <john@example.com>
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To: user1@example.com, user2@example.com, "Jane" <jane@example.com>
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```
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## Plain Text Body
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Simple plain text email:
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```
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From: alice@localhost
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To: bob@localhost
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Subject: Plain Text Example
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Hello, this is a plain text email.
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No special formatting needed.
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Best,
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Alice
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```
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## MML for Rich Emails
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### Multipart Messages
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Alternative text/html parts:
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```
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From: alice@localhost
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To: bob@localhost
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Subject: Multipart Example
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<#multipart type=alternative>
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This is the plain text version.
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<#part type=text/html>
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<html><body><h1>This is the HTML version</h1></body></html>
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<#/multipart>
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```
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### Attachments
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Attach a file:
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```
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From: alice@localhost
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To: bob@localhost
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Subject: With Attachment
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Here is the document you requested.
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<#part filename=/path/to/document.pdf><#/part>
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```
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Attachment with custom name:
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```
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<#part filename=/path/to/file.pdf name=report.pdf><#/part>
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```
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Multiple attachments:
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```
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<#part filename=/path/to/doc1.pdf><#/part>
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<#part filename=/path/to/doc2.pdf><#/part>
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```
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### Inline Images
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Embed an image inline:
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```
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From: alice@localhost
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To: bob@localhost
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Subject: Inline Image
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<#multipart type=related>
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<#part type=text/html>
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<html><body>
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<p>Check out this image:</p>
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<img src="cid:image1">
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</body></html>
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<#part disposition=inline id=image1 filename=/path/to/image.png><#/part>
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<#/multipart>
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```
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### Mixed Content (Text + Attachments)
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```
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From: alice@localhost
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To: bob@localhost
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Subject: Mixed Content
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<#multipart type=mixed>
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<#part type=text/plain>
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Please find the attached files.
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Best,
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Alice
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<#part filename=/path/to/file1.pdf><#/part>
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<#part filename=/path/to/file2.zip><#/part>
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<#/multipart>
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```
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## MML Tag Reference
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### `<#multipart>`
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Groups multiple parts together.
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- `type=alternative`: Different representations of same content
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- `type=mixed`: Independent parts (text + attachments)
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- `type=related`: Parts that reference each other (HTML + images)
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### `<#part>`
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Defines a message part.
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- `type=<mime-type>`: Content type (e.g., `text/html`, `application/pdf`)
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- `filename=<path>`: File to attach
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- `name=<name>`: Display name for attachment
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- `disposition=inline`: Display inline instead of as attachment
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- `id=<cid>`: Content ID for referencing in HTML
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## Composing from CLI
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### Interactive compose
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Opens your `$EDITOR`:
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```bash
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himalaya message write
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```
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### Reply (opens editor with quoted message)
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```bash
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himalaya message reply 42
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himalaya message reply 42 --all # reply-all
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```
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### Forward
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```bash
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himalaya message forward 42
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```
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### Send from stdin
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```bash
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cat message.txt | himalaya message write
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```
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### Send with headers from CLI
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```bash
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echo "Message body here" | himalaya message write \
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--to "recipient@example.com" \
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--subject "Quick Message"
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```
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## Tips
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- The editor opens with a template; fill in headers and body.
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- Save and exit the editor to send; exit without saving to cancel.
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- MML parts are compiled to proper MIME when sending.
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- Use `--raw` with `message read` to see the raw MIME structure of received emails.
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