What are you doing to prevent competitors? It doesn't look like you have a very strong moat, and it looks like something MS Teams could copy tomorrow.

I don't always agree that VC funded hypergrowth is good, but a well funded competitor in a crowded space will eat your lunch.

How much of your growth is from existing customers versus new customers?

Existing customers > New customers. Wrote about this there: https://missiveapp.com/blog/on-being-a-tiny-team

Thanks for sharing and congratulations on the milestone! You are going to grow like crazy when you throw marketing and sales behind new customer on-boarding. If you find that you are growth limited by cash-flow, you are also in a great position to set your own terms for valuation.