What do people think of FollowUp?
I've been using this product for 2 months to keep track of people that I want to continue to engage with in my network personally. For people I don't talk to frequently, I set a desired follow-up amount of time (2 weeks, 1 month, 3 months, etc) and then I never have to worry about "forgetting" to keep in touch with people.
The app creates events on your Google Calendar and sends an email when you haven't been in touch with someone past the follow-up timeframe you set.
One caveat for me is that it works on Gmail rather than Inbox, and with events and emails more than Tasks.