This is not something I’ve tried, but I have seen others use it successfully. I’m sure you’ve seen this before! Basically, you can have someone text a certain word or phrase to a specific number. They’ll receive a text telling them to respond with their email address and then once they do, they’ll be subscribed! This has a number of really neat uses, like:
FACT: The AHCA sets aside $100 billion over ten years to help states with high-risk pools and other innovations. It sets aside an additional $15 billion specifically for maternity care, mental health care, and substance abuse treatment. And it sets aside an ADDITIONAL $15 billion for a federal invisible risk-sharing program -- another innovative way to help people access affordable coverage. 

However, what Brunson cleverly conceived with ClickFunnels is to create a SaaS that can integrate with the world's most popular platforms and virtually anyone can quietly launch a funnel in hours as opposed to weeks of hefty coding and programming. As a fervent user of ClickFunnels myself, I can tell you that the system is impressive beyond measure.

Clickfunnels: Review, Demo, Pricing and Features: