Send Enterprise Announcements on your phone
If you have access to Breakroom Enterprise, you can send enterprise announcements on your phone by clicking on "Announcements" > click on the "+" icon on the left side and select "Enterprise Announcements"

Require Acknowledgement
You can choose to turn on "Require acknowledgement". With this turned on, a "confirmation" button will show for each team member. You can also your enterprise announcement to a subset of your company

How does Breakroom compare with other alternatives?
Breakroom as a Crew App Alternative
Breakroom as a Slack Alternative
Breakroom as a When I Work Alternative
Breakroom as a Homebase Alternative
Breakroom as a Microsoft Teams Alternative