Mail signature
Apple must provide an easy way of editing and changing e-mail signatures in Mail app. The only way is by inserting pail text into mail/preferences/signagute or via ~/Library/../v4/signatures... That is insanne!!! Or provide a way we can edit in Rich Text Forma and/or paste images. Please, solve that.
MacBook Pro with Retina display, macOS Sierra (10.12.2), null