Print me a grandpa!

Hey, I've tried looking up online for solution for photo printer but didn't manage to find any...

Story goes like this: Recently I got second kid and whole family is dying to see them. We keep them up to date with pictures we take, internet is magnificent. Problem is my grandpa is illiterate when it comes to technology and I'd like to keep him in the loop.

My idea is to get him a photo printer so I can send a picture and it lays before his eyes.

Is there such a photo printer on which I can send a email containing a pictures at any time of day and it prints? Postcard size is more than enough 10x15cm (4x6"). I was looking at Canon Selphy CP1500 but if I'm correct I wouldn't be able to print remotely? Extra points if it can print via email because I can make schedule mail.

P.S. Reliability is priority over photo quality. I'm visiting him every week so storage for blank papers is not an issue. There is available WiFi.

Edit #1 Printing and bringing it to him defeats the purpose. He is happy to see his family. I want to be able to 'communicate' with media when I'm not there.

Budget is anything below 300€/$.

Photo frames and 90 years old guy - nono.