The integration with other apps is amazing, it links seamlessly which means I can have my email address in Gmail but also use Office 365 for word processing or PowerPoint etc. It integrates well with many softwares including SharePoint. Also easy to learn if you are coming from another tool such as Slack where there's a learning curve when first starting out using rainbow. Some of the features are difficult to understand at times like how to search past messages within certain timeframes…