The text discusses how businesses can learn from political advocacy groups' use of SMS marketing engagement. The article highlights the importance of personalization, targeting, and differentiation in messaging, as well as best practices for sending effective SMS campaigns, such as getting permission, using unique shortcodes, being concise and considerate, having a conversation, measuring what works, going global while delivering locally, and more. It also mentions that 96% of text messages are read within three minutes, and 90% within three seconds, making it an ideal channel for immediate or time-sensitive information. Additionally, the article references Twilio's platform and provides resources such as APIs, SDKs, sample apps, ebooks, industry reports, webinars, and a developer community hub for further learning.