Please check my grammar in this email to friend?

Dear Lee,

I hope everything is well with you.
It was very nice seeing Professor Rang the other day. I wish you were here with us.
We invited Professor Rang for dinner at our house. I prepared a lot of meat dishes for him because I heard that German people like to have meats in their meal. But, he actually liked fishes more than meats or something sweet. By the way, is there a reason that he avoids eating sweets? May I ask you if he has diabetes? My father makes teas that can help prevent and manage diabetes. If your husband or Professor Ran has diabetes, please let me know. I will be more than happy to send it to you. They are high quality teas because my father puts a lot of effort to make it for my family. If you need anything else from Korea, like soy sauce or other stuff, please feel free to let me know.
I sincerely appreciate all your kindness and help while my family was in Germany.
I hope to see you soon in the near future.