[cranberryturkey]

you should tell us what "per segment" means. Never heard of it. I use twilio mostly.

[ufarooqi]

Twilio also charges per segment, they are probably not transparent. So a segment means 160 characters (It’s a bit more complicated than that).

So if you want to send an 320 characters long SMS. You are sending two segments.

Let me know if it makes sense?

[cranberryturkey]

that makes sense. you should put a * with a defintiion or something

[ufarooqi]

I'll add a tooltip.

[gelstudios]

Have you ever had an SMS get chunked into two?

A segment is the character (really byte) limit for a single message.