It seems that there is no notification of the OP of a question, when an answer is edited. (See my question here.)
I would like to have an option to notify the OP of a question when I edit my/an answer to his question.
I can see that it is not preferable to get a message on every small correction, like editing a typo or changing the tags.
But comments only saying "I updated my answer" are more like noise and not usable for a later reader of the answer.
So if I do a change to an answer, where I think it is important for the person that asked to recognize my change, because I fixed a bug in the solution or I changed it because it was not the correct solution for some other reason, then I would like to notify those person automatically.
So what about a checkmark next to the "Save Edits" button, saying "Notify the OP of the question about the Edit" and if the checkmark is used then send a message saying
"Edit to question X, Text of the Edit Summary"
Maybe additionally, only send it, if the Edit Summary is not empty.