Sometimes I'll write something out and reread it several times fully aware that I tend to miss words or misspell things, but in the moments after I've wrote something I'll rarely find any mistakes. However, 30 minutes later after I've sent the email or Slack message I'll reread what I wrote and it's a completely different story. For some reason only then will my brain decide to actually read what was written, but by then it's too late.
I had no idea this was a dyslexic thing. I was diagnosed a while ago and while I know it effects my reading ability I didn't know proofreading specifically was an issue for us.