diff --git a/skills/gog/SKILL.md b/skills/gog/SKILL.md
index e901b7a30c9..8766c08a7e8 100644
--- a/skills/gog/SKILL.md
+++ b/skills/gog/SKILL.md
@@ -16,7 +16,13 @@ Setup (once)
 
 Common commands
 - Gmail search: `gog gmail search 'newer_than:7d' --max 10`
-- Gmail send: `gog gmail send --to a@b.com --subject "Hi" --body "Hello"`
+- Gmail send (plain): `gog gmail send --to a@b.com --subject "Hi" --body "Hello"`
+- Gmail send (multi-line): `gog gmail send --to a@b.com --subject "Hi" --body-file ./message.txt`
+- Gmail send (stdin): `gog gmail send --to a@b.com --subject "Hi" --body-file -`
+- Gmail send (HTML): `gog gmail send --to a@b.com --subject "Hi" --body-html "<p>Hello</p>"`
+- Gmail draft: `gog gmail drafts create --to a@b.com --subject "Hi" --body-file ./message.txt`
+- Gmail send draft: `gog gmail drafts send <draftId>`
+- Gmail reply: `gog gmail send --to a@b.com --subject "Re: Hi" --body "Reply" --reply-to-message-id <msgId>`
 - Calendar list events: `gog calendar events <calendarId> --from <iso> --to <iso>`
 - Calendar create event: `gog calendar create <calendarId> --summary "Title" --from <iso> --to <iso>`
 - Calendar create with color: `gog calendar create <calendarId> --summary "Title" --from <iso> --to <iso> --event-color 7`
@@ -48,6 +54,33 @@ Calendar Colors
   - 10: #51b749
   - 11: #dc2127
 
+Email Formatting
+- Prefer plain text. Use `--body-file` for multi-paragraph messages (or `--body-file -` for stdin).
+- `--body` does not unescape `\n`. If you need inline newlines, use a heredoc or `$'Line 1\n\nLine 2'`.
+- Use `--body-html` only when you need rich formatting.
+- HTML tags: `<p>` for paragraphs, `<br>` for line breaks, `<strong>` for bold, `<em>` for italic, `<a href="url">` for links, `<ul>`/`<li>` for lists.
+- Example (plain text via stdin):
+  ```bash
+  gog gmail send --to recipient@example.com \
+    --subject "Meeting Follow-up" \
+    --body-file - <<'EOF'
+  Hi Name,
+
+  Thanks for meeting today. Next steps:
+  - Item one
+  - Item two
+
+  Best regards,
+  Your Name
+  EOF
+  ```
+- Example (HTML list):
+  ```bash
+  gog gmail send --to recipient@example.com \
+    --subject "Meeting Follow-up" \
+    --body-html "<p>Hi Name,</p><p>Thanks for meeting today. Here are the next steps:</p><ul><li>Item one</li><li>Item two</li></ul><p>Best regards,<br>Your Name</p>"
+  ```
+
 Notes
 - Set `GOG_ACCOUNT=you@gmail.com` to avoid repeating `--account`.
 - For scripting, prefer `--json` plus `--no-input`.