Looking on the internet deeply has found these results:

sorry I didn't reply your message is the most popular phrase on the web.

sorry I didn't replied your message 10 results on the web	sorry I didn't reply your message 13 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Just watched Code Geass. My life has changed forever. DragonBlue77 Nov 22, 5 :44 PM. Thanks. Sorry I didn't reply your message. Too busy. Maybe next time. Sep 6, 2013 ... I'm sorry I didn't reply your message yesterday.' I was about to press send button but remembered what she had told me, that she may can't text�... Sorry I didn't reply your message in DA because I've been dead (now alive) there. I missed you and haven't heard a while from you :( What happened? the last�...

sorry I didn't replied your message

10 results on the web

sorry I didn't reply your message

13 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Just watched Code Geass. My life has changed forever. DragonBlue77 Nov 22, 5 :44 PM. Thanks. Sorry I didn't reply your message. Too busy. Maybe next time.
Sep 6, 2013 ... I'm sorry I didn't reply your message yesterday.' I was about to press send button but remembered what she had told me, that she may can't text�...
Sorry I didn't reply your message in DA because I've been dead (now alive) there. I missed you and haven't heard a while from you :( What happened? the last�...