Elicious is very easy to use, it's super fast for sending emails with multiple recipients at once! I like that you can easily customize every aspect of an email using their drag & drop builder tool (also called as "The Mail"). You'll have no problem finding what exactly do they want from us in each case study or event invitation we send out through this service - all are customizable down-to detail level; which makes our work really efficient because there would be nothing left undone when creating those campaigns/emails via its builtin editor interface! The only thing i dislike about them so far was lack off customization options regarding images / fonts etc., but even then everything else has been great thusfar :). We've used several other services before trying Elicipous too though some were okay while others had issues such as delayed responses time wise ;), not sure if thats just my experience tho..