Now launch an enterprise plan. It should be hundreds or thousands of dollars a month, whatever keeps you afloat. Include SLA guarantees and support. Enterprise users are going to have you engage lawyers to redline contracts and do security audits since you are plugging into their internal communications. Saying you have "commercial grade encryption" doesn't mean anything to the people who will pay your bills and you are going to have to pay for outside pentests and privacy audits.

But most importantly start working on your next Slack app and diversify your income. In all honesty this is a feature built on a bug (poor text rendering in Slack). If a billion dollar company needs that bug fixed they are just going to pressure Slack during the next renewal to avoid having to pay you.

The majority of your income will be from tech companies and education/research firms that have bought into Slack (which is far and few, most are all-in on Teams with just student groups in Slack).

Put out what you can for free, then slap on the commercial licenses or options for your potential customer base. User or workspace per month with a very slight discounted annual and heavily discounted multi-year option. It's mostly about adoption at this point, outbound marketing won't work unless you're actively demoing the feature to your customers.

And a lot has to align for that; Slack admins allowing it, a business unit willing to sponsor the budget, security & compliance.

Best of luck!

Therefore I think $/month or $/user/month makes more sense.

To choose between the two, I would say, are your costs growing when there are more users in the slack app? If so, then $/user/month makes more sense.

1. If you have as target small groups: like small startups then user/month is better (for them)

2. If you have as target bigger groups maybe over 50 members then flat fee is better (for them)

Active Users or Api Calls is hard to understand and follow from a buyer perspective. I need a place to quickly see this stats and know where I am.