Been using ActiveCampaign for myself and clients for almost 2 years now. Doing email marketing since 1996. Run the largest ActiveCampaign (unofficial) Facebook users group (free to join) with over 1,000 users at https://www.facebook.com/groups/activecampaign/
Also do monthly, high-level ActiveCampaign coaching and provide easy to use tools to make ActiveCampaign even better. Some tools include tagging and automations based on % of video watched, abandoned basket series, advanced segmentation, and more.

Also, have the AC Video Tracker Plugin which allows you to track how much of each video your contacts watch and lets you add/remove tags, lists, automations and more. Works with YouTube, Wistia, Vimeo. Check it out here. http://acvideotracker.com/launch/?s=acform-bio