The SendHub site makes it hard to understand what you do. My takeaway is that you make it easier to use the Twilio SMS send API. In other words, you can help me reduce this:

  require 'twilio-ruby'

  # find your credentials at twilio.com/user/account
  account_sid = 'AC043dcf9844e04758bc3a36a84c29761'
  auth_token = '62ea81de3a5b414154eb263595357c69'

  @client = Twilio::REST::Client.new account_sid, auth_token

  @client.account.sms.messages.create(
    :from => '+15105551234', # From a Twilio number you own
    :to => '+16105557069',   # Text any number
    :body => 'Ahoy hoy!'
  )

to a single line (the first code is from Twilio's page). If that's not what you do, you should make it clear what you do. Otherwise, I wonder why I'd pay (and add a point of potential failure) to reduce a single line of code to a different single line of code. Also, it looks like I'd lose the inbound SMS feature of Twilio.

Gosh, this sounds like I'm bashing your app, which I don't mean to do. You're YC-backed, so I'm sure the issue is the content on your website not representing your actual value. Hope this helps you align the two.