PhishER is a web-based platform that helps InfoSec and Security Operations teams respond to dangerous threats quickly and automate the workstream of non-threatening emails. It prioritizes, analyzes, and manages a large volume of email messages, grouping and categorizing them based on rules, tags, and actions. It also includes a custom machine-learning module, PhishML, to analyze messages and generate confidence values, and PhishRIP to quarantine suspicious messages. Additionally, PhishFlip turns defanged phishing emails into simulated phishing campaigns for training purposes.