If you ever find out that your campaign text messages get blocked by Twilio or they've been marked as spam (due to suspicious links, etc.), most likely it's a problem with TinyURL supposing that you're using TinyURL as your SMS link shortener.

Possible fix:

• Try switching to another shortener for your SMS such as Bitly and Rebrandly. Afterward, test out your campaign again and see if you receive the text message.