First some product advice: You&#x27;re trying to replace various more specialized tools with a general purpose tool. For example, I use Slack, Front, and Lever in addition to gmail, for internal, external, and recruiting-related conversations respectively. You should explain clearly how your one tool will be better than a combination of the many special-purpose tools.<p>If you can support yourselves with only 15% time on the old project, that&#x27;s pretty good. You can probably get Missive off the ground with 85%. Once it&#x27;s off the ground, it should be easy to get investment to focus on it full-time.<p>I like to think that investors aren&#x27;t just a time sink, but can give useful advice about the parts of the business that are common to the other businesses they work with, like customer acquisition, hiring, and managing teams.