Sometimes when I stumble reading poor English I wish there was a way I could gently, privately, suggest corrections without making the author feel criticized.

Sometimes when I stumble reading poor English I wish there was a way I could gently, privately, suggest corrections without making the author feel criticized. I never feel it is appropriate to do so in a comment or reply because I am not critiquing their ideas. Usually the meaning is perfectly clear, but to a native speaker's ear it can just feel awkward. Of course, we all make typos or fail to proofread adequately so we could all benefit from a kindly edit now and then.