Roswell NYC

In short

Roswell NYC is a New York Shopify Platinum Partner, founded in 2019, organised into three divisions: design, engineering and growth marketing. That last arm is unusually heavy for a store builder, covering Klaviyo retention, paid media, SEO and analytics, and the agency describes itself as an extension of the client's team. Its merchants cluster in beauty, haircare, fashion, jewellery and wellness, with haircare brand amika as the featured project. It ranks #8 on our Shopify list.

The most detailed case studies on its site are about what happens after launch. Denny's moved email from Mailchimp to Klaviyo with Roswell, rebuilt every automated flow and added SMS and direct mail, and Roswell reports email and SMS reaching about 28% of store revenue within seven months. Rotor Riot, an FPV drone brand, scaled paid ads at an 8x return on ad spend, and Hyperlite Mountain Gear merged two messaging platforms into one customer record.

Fashion, beauty and lifestyle brands already selling well on Shopify Plus, and wanting one partner to run the store, the email and the ad budget together, are the clearest match. A brand that has not yet settled its name, positioning or identity should do that work first with a branding studio, since Roswell's evidence is overwhelmingly about conversion and retention rather than brand creation.