This is way simpler to use. With Mailflo, an email thread is a unit that you work around - by assigning it to a teammate, and by tracking its status. Thats how email customer support works in most cases.
We have been using Mailflo to do customer support for our other product GrexIt for a few weeks, and we know how effective this approach is. Do try it out.
As a founder of Streak, I'd love to know how we could be simpler/easier to use. If you have any suggestions or specific pain points, would love some feedback!
GrexIt was built to help teams collaborate around email threads for customer support. Overall, we make it very easy to assign/track an email thread and move it through a very light workflow. Our focus would be on building on this, and bringing in more functionality for the customer support use-case.