Do you think about revisiting this space again with today's current context?
For instance, here are some features that I wish existed in the market with current automation phone techologies + respective APIs.
- Default voicemail, but having the flexibility to store, edit, record multiple voicemails that can be triggered based on context. If the phone number is not in my contacts / not recognized / no previous-history/interaction, play this voicemail. If my mom calls on the weekend, play her this one letter her know I'm out of the office. Spam number calls, automatically have automated voice say "I know you are a spam bot, reporting now.... please hang up as you are being recorded"
- grant auth to another individual to receive sms forwarding for a particular number. I.e. customer support text messages forwarded to my phone number, I would like to grant individual X to receive them, and when they reply back, it passes through my phone and to the end customer, who thinks they are interacting with me.
^^ just a few but I have a list somewhere. If this is interesting, I'd love to discuss/collaborate or minimally get your advice + thoughts.
I think it's a tough space. I'd start by trying to make sure people would PAY for whatever you want to build. The needs you're talking about are pretty specific.