Please feel free to contact with me about any topic. I'll answer your questions as soon as possible. My email address is email@example.com.
While you are sending an email to me, you might use my public PGP key to encrypt your mail. You can find it here. If you don't know about what is PGP, you might checkout it in here. Also if you send me your PGP key, I can encrypt my mail while sending you.