As a rule, FranFunnel attempts to send a text message to every lead that has a phone number attached to it. (See: Do you text landlines?)
If we know with 100% certainty that the text is undeliverable, it will turn red like this:
We expect you to see 5-10% of the messages as failed. Keep in mind that the vast, vast majority of phone numbers are able to receive text messages. While they don't deliver them to the end user (because let's say it's a landline), that doesn't mean that the phone number can't accept texts. This technology is evolving, and we're trying to get you the best information we can.