Easy to deploy, flexible with customization options - not expensive or resource intensive when compared against other vendors (such as HPE). It's great that it supports Linux too but only Windows should be supported since most of our clients are using Microsoft solutions! The support team is very responsive once you reach out via ticketing system which makes troubleshooting easy after hours in-office work timings during working days also helps quite well sometimes :) Highly recommend this product if your looking at an Enterprise solution without being overpriced by having all features covered from basic email management through archiving etcetera! Flexible deployment models like cloud/On Premise along side licensing model choices between yearly per user cost vs perpetual license fee make sense given its price point & benefits provided can't think anything else i'd find better than what they have currently offered so far!!