To Act Or Not To Act - Annotating and Classifying Email Regarding Necessary Action Veronika Hintzen, Alexander Fraser KONVENS 2019 Every user of email is aware of the problem of reacting to emails that require a time-sensitive action by the recipient while being overwhelmed by informational emails. We define a new classification problem to capture this distinction, creating comprehensive annotation guidelines and carrying out annotation. We carry out a proof-of-concept implementation of a classifier and discuss our future research which will result in a tool that is usable in an everyday business environment.