Cheapest sms with an international sim card?

[inquisitor]

Originally Posted by DRNewcomb

I'm not sure about FishText but as I recall smsBug only takes about 100 bytes to send a SMS. If you only send a few per day it looks like 02 would never charge you for the data.

100 bytes? That's impossible. I doubt there's any compression algorythm that can shrink 160 bytes of text + overhead (e.g. recipient's number) to 100 bytes. Further you forget all the header information of the HTTP-request on TCP/IP-level. I fear you can't send any SMS over TCP/IP with less than 512 bytes.

Take this example: the request has 50 bytes, the response 286 bytes and that's without those 160 bytes, which need to be transferred and without the at-least 12-digit number of the recipient. Furhter the request should contain some authentification information. So no way to stay below 512 bytes!