The message editor

The message editor is the box you type into when you're replying inside a conversation in your inbox.

Showing the formatting toolbar

The toolbar is hidden by default to keep the editor clean. Click the small letter-shaped icon in the bottom row of the editor (tooltip: Show formatting) to reveal it. The toolbar offers B (bold), I (italic), underline, a heading style, bulleted and numbered lists, link, and undo / redo buttons.

Adding a link

Type or paste a web address (starting with http). The editor turns it into a clickable link automatically. To link from custom text, highlight the text first and click the link button in the formatting toolbar.

Mentioning someone

Type @ in any conversation — one-to-one or group — and start typing a name. A short list appears; click the right person to add the tag. They'll get an extra notification for that message specifically.

Adding an attachment

Click the paperclip icon in the bottom row to attach a photo or file. (The paperclip only appears in replies inside an existing conversation — the first message in a brand-new conversation doesn't allow attachments yet.) See the attaching-a-file-to-a-message article for the full walk-through.

Sending vs. new line

Enter by itself adds a new line. Press the round send button on the right of the bottom row (it's an upward arrow icon), or use Cmd+Enter / Ctrl+Enter to send. Messages can be up to 10,000 characters long.

Can I edit or delete a message I sent?

Not yet — once a message is sent, it's there for keeps. Take a second to re-read before you press send.