Business I'm working for is looking to create a system that will send sms notification to staff, all it does is send an email and a message to alert them if it hasn't been completed yet though it's due, each non-completed task requires an investigation due to the sensitive nature and managing that is a pain. I've seen many solutions, I've been eyeing voodoosms since they have cheapest price per sms and twilio for their api, but these services seem more geared towards marketing.
I'm looking to send SMS with following rules:
- localy only (uk)
- to known numbers (approx. 500, still growing, all within our database)
- Employees only
- Just send, no receive
- Relatively low traffic
- Text only
- Dev friendly
Are there alternatives that could be done free/at lower price?