You bought a domain and website? Use the cheapo email service that come with one of those vendors ….

There is pretty much no reason to roll your own these days.

If its not crazy old you could get a super cheap nvmo service and toss it in your car/emergency bag with a spare battery pack and cable

A wifi web cam is something i’ve been using an old Nexus phone I still have. The picture is pretty good and I like that I can out it anywhere there is wifi.