Should I let him know?

Me and this guy, had a friends with benefits relationship, and things didn't end well, and he blocked me. A year later, after him giving me mixed signals, I decided to write him a letter to tell him how I feel and I'm ready to move on. After, I gave him the letter. He sent me a text but he didn't receive my text, bc my phone # is still blocked from last year. Should I told him, that I responded to the message? Or should I let him figure out himself?

Should I let him know?
Post Opinion