MailChimp - MailChimp is the best way to design, send, and share email newsletters.
ezgif.com - Ezgif.com is simple online gif maker and toolset for basic animated gif editing.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Instagiffer - Create GIFs from anything!
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Gifsicle - Gifsicle is a powerful, simple command line tool for creating, editing, and optimizing animated GIFs.