If the RPi can't connect to the network it should put out a hotspot so you can connect and send mail. The new CustomPiOS has auto-hotspot and https://github.com/guysoft/HostSpotOS which would do this.
If the RPi can't connect to the network it should put out a hotspot so you can connect and send mail.
The new CustomPiOS has auto-hotspot and https://github.com/guysoft/HostSpotOS which would do this.