I have a script which detects keywords in the logs and sends an email alert but I am now looking for recommendations on a good Email to SMS text gateway software, that will send these email alerts as SMS texts.

Try this
http://techawakening.org/free-sms-alert ... docs/1130/
It will send an sms with the subject of email inline

Try this
http://techawakening.org/free-sms-alert ... docs/1130/
It will send an sms with the subject of email inline

Many thanks for the info but I understand there is a daily limit to the number of SMS notifications which will be sent ?

but I understand there is a daily limit to the number of SMS notifications which will be sent ?

Yes it does have, although I don't know how much. It depends on how sms you think you will get. Since google is in two step verification with sms, the limit must be a considerable number. Worth trying anyway if you can't find anything else for free. You can setup two accounts in google if you like.