A free drop-in SDK that allows your users to send in-app feedback. You have the option to send any feedback you receive to several popular Project Management Systems or Issue Trackers including Pivotal Tracker, Trello, GitHub, BitBucket, Jira, and more. All received feedback is automatically tagged using sentiment analysis and classified as positive or negative or you create your own tags to easily group messages. Doorbell can also instantly notify you when you receive new feedback by email or in several popular Group Chat services including HipChat and Slack.