The Lite option is free and has no limit on number of users. We use the paid option for a team made up of our staff, but we also just launched a new team with t

The Lite option is free and has no limit on number of users. We use the paid option for a team made up of our staff, but we also just launched a new team with the Lite option as a way to talk to the sellers in our marketplace. I just invited 700 people of those people in to Slack and plan to invite several thousand more. The limitation is that the archive is limited to 10k messages. But there are plenty of use cases where that doesn't matter.