Rui, Sara, thanks for sharing your knowledge, I am doing the tutorials of esp32 sim800l, here in Colombia they worked perfectly for me. A question ?
Where can I find information to publish the data in IFTTT AND TINGSPEAK ???
We have a tutorial that shows how to send information to your own server using the ESP32 SIM800L board.
You can use our arduino sketch example, but you need to change the URL where you want to publish the data (server details). Here’s the tutorial: https://randomnerdtutorials.com/esp32-sim800l-publish-data-to-cloud/
Other examples with IFTTT and Thingspeak that might help:
I hope this helps.