Please don't pitch yourself as a lesser of two evils. And I can at least cuss out / slam the door on a solicitor. And they aren't going to wake me up in the middle of the night.
Follow up question: do you respect the 'Do not call' registry?
You have a useful product that will appeal to a number of people (on the sending side). But please don't delude yourself into believing that you have a product that make the world better for all of the millions of recipients that somehow ended up in your databases.
A global opt-out is the absolute least you can do.
The last thing I want is random spam from any organization, regardless if you think they are trustworthy. If it's unsolicited, it's spam.
Feature request: add a platform level opt-out.
You don't really want to opt out of birthday spam do you? :-P