Slack has launched its first ad campaign - Sault Ste. Marie Evening News

Slack has launched its first ad campaign
Sault Ste. Marie Evening News
Slack via Adweek. Slack, the $2.8 billion business messaging app, has launched its first ad campaign. Adweek reports that a billboard campaign is launching in four US cities: Cleveland, Charlotte, Minneapolis, and Milwaukee. The ads will also extend ...and more »