Set message priority (beta)
Available on all plans
Cloud and self-hosted deployments
From Mattermost v7.7 and version v2.4 of the Mattermost mobile app, you can add a message priority label to root messages to make important messages requiring timely action or response more visible and less likely to be overlooked.

To set the priority of a new root message:
Select the Message Priority
icon in the message formatting toolbar. Select from Standard, Important, or Urgent.
Select the priority for the message. Messages have a standard priority by default.
Select Apply
When you send a priority message, the priority label displays next to your name in the channel, as well as the Threads view when others reply to the thread.
Send persistent notifications
Note
Available only on Enterprise and Professional plans
From Mattermost v8.0, when you add an urgent priority label, and your message @mentions at least one other user, Mattermost Professional or Enterprise customers can enable persistent notifications which notify recipients at regular intervals and for a set amount of time until the recipient acknowledges, reacts, or replies to the message.
To enable persistent notifications for a message:
Compose a root message with at least one @mention.
Select the Message Priority
icon in the message formatting toolbar.
Select Urgent.
Select Send persistent notifications.
Select Apply.
Note
Recipients must have Mattermost desktop and/or mobile push notifications enabled to receive persistent notifications.
@channel, @all and @here mentions don’t send persistent notifications.
You’re notified depending on your notifications preferences for desktop and mobile push notifications. You won’t be notified when your availability is set to Do Not Disturb, or if you’re Out of Office.
System admins can customize the maximum number of @mentions permitted, how frequently and how many persistent notifications are sent, as well as disable persistent notifications for all users, if preferred. By default, users are notified every 5 minutes for a total of 30 minutes. See the configuration documentation for details.
Stop a persistent notification by replying to the thread, selecting the Acknowlege icon (when present), or reacting to the thread with an emoji. Persistent notifications also stop being sent if the original message is deleted, or if the maximum number of persistent notifications are sent.
Request acknowledgements
Note
Available only on Enterprise and Professional plans
Mattermost Professional or Enterprise customers can additionally request that recipients actively acknowledge the message to track that messages have been seen and actioned. By default, marking a message as Urgent priority automatically requests an acknowledgement.
When you request acknowlegement of a message, an Acknowledge button is added below the sent message. You can mark message as acknowledged by selecting the button, and you can hover over the Acknowledged
icon to review who has acknowledged the message.
Tip
When you have push notifications enabled on mobile, you’ll be notified every five minutes until you acknowledge or reply to the message.
After acknowledging a message, you have up to five minutes to change your mind. Select the Acknowledged
button again to remove your name from the list of acknowledged users.