I would like to measure responses to a simple question (three point scale) over an expended period of time at multiple points to observe changes connected to an intervention.
What tools are available in Europe to mass-message a text (via sms) and receive the reply? Are there any companies that may even have units specialised in research? Specifically, points to consider are (1) safety of the data (obviously the numbers cannot be shared outside the system, or saved on a server outside of the EU), (2) Usability/costumer service, and (3) prices.
If anyone has experience with these things and could share them, I would be very grateful.
Many thanks in advance!
I use an opensource solution from many years and it works perfectly: oholist
you need to have a trusted SMTP server. I have an account at AWS Amazon and I can send up to 60K messages per day
hope this can help you. bests
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