What does Mixmax do well? Mixmax is an email tracking and marketing assistant deluxe. Think of Bananatag or Yesware on steroids. It tracks opens, schedules sends, allows templates, creates campaigns and even enables meeting scheduling! Best of all, it integrates with Gmail brilliantly via Chrome extension, which means that it works seamlessly with my CRM. Most Gmail add-ons get lost when using a CRM integrated with Gmail -- you click on a contact link and the Compose tab comes up minus all the extension add-ins -- but not Mixmax. All the capabilities are right there, set in a floating window that allows you to access all their features without leaving your CRM. It's amazing!
What does Mixmax not do well? I've yet to reach a point where Mixmax did anything less than spectacularly, or found a feature they're lacking. There might be some, but I haven't found them yet.
What do you wish you had known about Mixmax before using? Only thing I wish I knew about Mixmax before using it was their existence. I used Gmelius for years and while their service was excellent it doesn't compare to Mixmax, and their Gmail integration disintegrates when using my CRM.