diff --git a/notify.md b/notify.md
index 649e24a..98b2729 100644
--- a/notify.md
+++ b/notify.md
@@ -673,3 +673,23 @@ export AWS_SES_FROM_NAME="Something"
 
 acme.sh --set-notify  --notify-hook aws_ses
 ```
+
+## 24. Set notification for Mattermost Bot
+First, create a bot account on your Mattermost https://developers.mattermost.com/integrate/reference/bot-accounts/. Don't forget save bot's Access Token.
+Then set the environment variables.
+API URL (current at https://api.mattermost.com/):
+```sh
+export MATTERMOST_API_URL=https://you_mattermost_server/api/v4
+```
+Channel ID for notifications. Find the Channel ID in the Web Interface or Desktop Application by click View Info button.
+```sh
+export MATTERMOST_API_URL=7qirnh3c5trg9xa6za38shdjby
+```
+Bot Token:
+```sh
+export ATTERMOST_BOT_TOKEN=eb3ex6mg6id5xen5zmtrjcjrfo
+```
+and finally turn on acme.sh notifications:
+```sh
+acme.sh --set-notify --notify-hook mattermost
+```