Hmm, I don’t know how you can send free SMS, but I know one site that provides one-time numbers to receive SMS with a code. Once my mother wanted to register on the forum, but my brother forbade her to indicate her real phone number to protect personal data and then I proposed this site, and after that incident we very often use it as a family. You can find out more in detail on their website https://mobilesms.io/ .

thx for sharing man, nice looking site