Seems almost identical to this company (from a previous YC round, I think): https://etacts.com/ https://etacts.com/ I really like the idea of an "expect follo

Seems almost identical to this company (from a previous YC round, I think): https://etacts.com/ https://etacts.com/ I really like the idea of an "expect followup with in N days" feature for GMail. It's interesting that GMail's dominance as a client for heavy email users has accidentally enabled a market of add-ons delivered as browser extensions.