My email address follows the format my first name at zeltser.com.
You can get in touch with me on Twitter by sending a message to @lennyzeltser. I am also on LinkedIn. If you'd like to send me an encrypted note, you can find my public PGP key on Keybase. Its fingerprint is 7058 2B85 4CAF 3B21.
I try to answer all the messages I receive, but sometimes I fall behind. If I don't reply, please send me a gentle reminder.