Please translate this message, thank you.

We haven't seen each other for a long time. I feel very sorry since I wrote to you last time.

I don't know if you can get this message,

If you can, please send me a message so that I can send you the photos I have prepared for a long time.

Also, I will go to Japan this summer. If you go, we can meet again, if you still want us to meet.

I hope we can keep in touch often, and we need a lot of Japanese advice.

I hope you can leave me a message when you receive it. Goodbye.

That's what it means. Pure manual translation is not the same as those on the Internet, but I translated it seriously.