I had a similar situation getting my organization to use Teams (a Microsoft knockoff), and other tools. And the key, I’ve found are Hero Users.
Hero users are the people in a community that can change the direction it goes in terms of norms, culture and tools. Once you get one of these heroes to use what you want, network effects bring everyone else on board.
When I wanted centralized file management through Dropbox, I found the people whose sharing habits shaped the company — the CEO, an accountant, and so on. Once they used it, the people around them used it, and it rippled through the company. Now if you don’t have your files on Dropbox... there’s a shaming process 🤣
So to get everyone to use Teams, I started with the ones who emailed, messaged, and WhatsApped more than double the next person. It took about two or three hours before we had an 80% adoption.
The great thing about these heroes is that they are also a terrific test to see if the tool actually works. Not everything I’ve introduced had been a success. Any todo list or project management app is almost always dead on arrival. And the heroes were the places they failed first.
So go, find your overcommunicators, your gif monkeys, your chatterboxes. And get them on Slack first.