Need better testing on release. I use it for few years already. App eating my battery in 8 hours. The problem was with trash folder. Probably bad index after the update. It was impossible to just empy the trash. I delete few of them and finally was able to emty the folder. Developers tolerate deleting more than marking all messages as read. User can disable question for deleting  but not for marking them as read.:-? I use it as last operation after read some messages. The rest is ok with just reading the subject.
January 07 2017