Overview
Shopify Email is free and built into your store. Constant Contact is a legacy email platform with event marketing and social tools. For Shopify stores specifically, neither is the best choice for serious e-commerce email.
Constant Contact's strength is in event management and social posting alongside email. If your store hosts events, workshops, or trunk shows, that unique combination has value. For standard e-commerce email marketing, dedicated platforms like Sequenzy, Omnisend, or Klaviyo are better investments.