Shopify App Store - The most powerful ecommerce app store
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.
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.
Rutter - One API for every Ecommerce platform
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.