A Chrome extension that lets you attach private notes to Gmail threads. Notes appear below the subject line and sync across devices via your Google account.
- Per-thread notes — attach a note to any Gmail thread; it reappears every time you open that thread
- 6 colour themes — yellow, blue, green, rose, lavender, or neutral, chosen per note
- Markdown formatting —
**bold**,*italic*,[link text](url) - Keyboard shortcuts in the editor:
Ctrl+Enter— saveCtrl+B— boldCtrl+I— italicCtrl+K— insert link
- Note manager — click the toolbar icon to see all saved notes, with subject and preview, and delete any you no longer need
- Syncs across devices via
chrome.storage.sync - Dark mode compatible
- Clone or download this repository
- Open Chrome and go to
chrome://extensions - Enable Developer mode (top right)
- Click Load unpacked and select the repository folder
- Open Gmail — a note icon will appear in the subject line of any thread
Open a Gmail thread. A small document icon appears at the end of the subject line. Click it to open the editor, write your note, choose a colour, and press Save (or Ctrl+Enter).
Notes appear below the subject line when you open a thread. Click Edit to modify the text or change the colour.
Click the Gmail Thread Notes icon in the Chrome toolbar to open the note manager. From there you can review all saved notes and delete any you no longer need.
Notes are stored in chrome.storage.sync, which has a limit of 512 items and 100 KB total per extension. Use the note manager to delete old notes if you're a heavy user.