So an Internet injection point for radiograms is https://nts2.arrl.org/radiogram/ but....
Remember the US licence conditions and agreements limit which countries are US amateur can sent traffic to third parties. Depending on your destination they may not be able to send it.
Beyond that, there is not always an organisation in your destination country to accept or relay that traffic :-(
SDF has a VPN service currently with endpoints in the USA and in Canada. More are on test and hopefully coming soon. The tutorial is a little out of date wrt setups https://sdf.org/?tutorials/VPN
So an Internet injection point for radiograms is https://nts2.arrl.org/radiogram/ but.... Remember the US licence conditions and agreements limit which countries are US amateur can sent traffic to third parties. Depending on your destination they may not be able to send it. Beyond that, there is not always an organisation in your destination country to accept or relay that traffic :-(
SDF has a VPN service currently with endpoints in the USA and in Canada. More are on test and hopefully coming soon. The tutorial is a little out of date wrt setups https://sdf.org/?tutorials/VPN