> For the complete documentation index, see [llms.txt](https://threadly.gitbook.io/threadly/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://threadly.gitbook.io/threadly/sending-messages/understanding-threadlys-sendmessage-slash-command.md).

# Understanding Threadly's /SendMessage Slash Command

## Using the `/SendMessage` Command in Slack

The `/SendMessage` command is the fastest way to send a message to multiple channels or DMs — right from your Slack composer.

Whether you're announcing a product update, sharing a weekly reminder, or pinging all your customer channels, `/SendMessage` lets you do it in one go.

### How to Use It

1. **In any Slack message box**, type:

   ```
   /SendMessage [and whatever your message text is here]
   ```
2. An empheral message composer will appear. From here, you can:

   * ✏️ **Edit your message**
   * 🗂 **Select channels or DMs**
   * ✅ **Add actions** like buttons or forms, or **images**

   <figure><img src="/files/pYndOKOQMITLpd1RkV27" alt=""><figcaption></figcaption></figure>
3. Hit **Send Message.** You can then decide if you want to send your message now, or schedule it for later.

### Pro Tips

* Pair messages with **Slack Forms** for onboarding, feedback, or approvals
* Save time by setting a **Workflow** to trigger this message on a schedule or event
* After sending, you can:
  * View engagement (clicks, reactions, form submissions) from the Analytics tab
  * Reuse the same message for another blast