I like that it allows for multiple campaigns to be set up at once, which makes things easy when you want more than one thing going out from your account! It's not as simple of interface if someone who has no prior experience with software wants some help setting something new or changing how their current settings are working - but overall this works well so far in our small business!! We use different types of autoresponders depending upon what we're trying accomplish (ease/speed vs engagement).
This helps us manage all those options without having endless tabs open each time they need attention while also keeping them organized into categories suchas "engagement" versus just straight ecommerce mailings etc..