3. If you've already installed Matrix services using the playbook before, you'll need to re-run it (`--tags=setup-all,start`). If not, proceed with [configuring other playbook services](configuring-playbook.md) and then with [Installing](installing.md). Get back to this guide once ready.
3. If you've already installed Matrix services using the playbook before, you'll need to re-run it (`--tags=setup-all,start`). If not, proceed with [configuring other playbook services](configuring-playbook.md) and then with [Installing](installing.md). Get back to this guide once ready.
4. Invite the bridge bot user to your room:
4. Invite the bridge bot user to your room:
- either with:
```
- either with `/invite @_webhook:<domain.name>` (*Note*: Make sure you have administration permissions in your room)
/invite @_webhook:<domain.name>
```
*Note*: Make sure you have administration permissions in your room
- or simply add the bridge bot to a private channel (personal channels imply you being an administrator)
- or simply add the bridge bot to a private channel (personal channels imply you being an administrator)
5. Send a message to the bridge bot in order to receive a private message including the webhook link.
5. Send a message to the bridge bot in order to receive a private message including the webhook link.
```
```
!webhook
!webhook
```
```
6. The JSON body for posting messages will have to look like this:
6. The JSON body for posting messages will have to look like this: