Installed IOS 18 a few days and it worked great until the next day I installed OS11 on the watch. Now no matter what I do I cannot get just haptics on my watch when an email comes through. Its either with sound or completely silent. I like it to just tap me on the wrist when I am at work and its really annoying now. I have tried all the setting in mirror my iphone and custom. I don't know why it has stopped working since messages etc can still get haptic only with the same settings. It must be a bug because other people are having the same problem.