SMTP to send email directly to a client Answered
I have a project idea to create a BTRD, or Beer Theft Reporting Device. (Yeah, I need to come up with a more creative name... :P) The idea is to use an ESP32 microcontroller connected to an accelerometer and 6 pressure sensors mounted to a board, on top of which sits a six-pack. I do see a few problems though. hopefully wifi can penetrate the cold metal coffin without too much loss in signal. (I'm afraid the fridge may end up functioning like a faraday cage...)
Assuming that isn't going to be a problem, I have been googling around trying to figure out if it would be possible to send automated emails from this device to inform of potential theft. Since I am not concerned about receiving emails at all, It seems overkill to have to use SMTP to send the mail I want to send to some server first, which then itself forwards the email on over through the internet over to a client. Is it possible to simply send the SMTP email directly to the recipient? I mean, if this is a product that I sell, then I would not want the end user to have to bother too much with configuring the device too much.