I love that it's easy & free! It makes managing our email campaign super simple.
There are some minor glitches here or there but nothing too major (such as having no way add pictures/emoji) which would make me stop using them completely unless if were necessary features we needed a lot more than others who don't have this feature yet do). This platform works great wen trying new things out like testing different content types before publishing etc., also when sending newsletters through mass mailing list vs personalize lists where people want one type over another e.g price comparison offers ect..