Not sure about you, but I often wonder how to build a carousel component in such a way that you can easily dump a bunch of items into the component and get a nice working carousel — one that allows you to scroll smoothly, navigate with the dynamic buttons, and is responsive

Online tool that creates an image carousel that will render in many major email clients.

Fully responsive. Scales with its container.
Separate settings per breakpoint
Uses CSS3 when available. Fully functional when not.
Swipe enabled. Or disabled, if you prefer.
Desktop mouse dragging
Infinite looping.
Fully accessible with arrow key navigation
Add, remove, filter & unfilter slides
Autoplay, dots, arrows, callbacks, etc...