By philosophy an design there is no private direct communications channel between users of the site.

You could leave a public comment addressed to @username under the answer that was edited and that will pop up as a notification when username next visits the site.

As @yagmoth555 pointed out, it is quite possible that you either missed the notification that an answer of yours was edited because the community was quite active and already approved the change, or the edit was made by a high-rep user and effective immediately. Regardless, as far as I know as the author of an answer as you can always select the revision history of your own answers and from there you should have the ability to revert changes, regardless of the edit privilege.

If it turns into a tug-of-war between the editor and yourself please come to Meta of flag for moderator intervention.

By philosophy an design there is no private direct communications channel between users of the site.

You could leave a public comment addressed to @username under the answer that was edited and that will pop up as a notification when username next visits the site.

As @yagmoth555 pointed out, it is quite possible that you either missed the notification that an answer of yours was edited because the community was quite active and already approved the change, or the edit was made by a high-rep user and effective immediately. Regardless, as far as I know as the author of an answer as you can always select the revision history of your own answers and from there you should have the ability to revert changes, regardless of the edit privilege.

If it turns into a tug-of-war between the editor and yourself please come to Meta of flag for moderator intervention.