Our web site will be used by multiple individuals as well as small business owners.
we like to offer them the ability to send / receive text messages individually as well
as in bulk.
For this we have chosen: smslib from apache.
It should read and write to a mysql database.
You are free you create database / tables with coordination)
Keep it generic and re-usable.
Let us know what experience you have with gsm modem or cell phone as well as bulk providers.
Any do's or don'ts etc.