Airship provides brands with user-level data, engagement channels, and services that helps to deliver push notifications, emails, SMS, in-app messages, mobile wallet passes, and more to their target audiences. It caters to airlines, finance, media, retail, sports, and telecom industries. The company was founded in 2009 and is based in Portland, Oregon. In October 2022, Airship was acquired by Zonal Retail Data Systems. The terms of the transaction were not disclosed.

Klaviyo is a unified customer platform that gives online brands direct ownership of their consumer data and interactions, empowering them to turn transactions with customers into long-term relationships at scale. With Klaviyo, brands can combine customer data with more than 220 native integrations to automate personalized email and SMS communications that make customers feel seen. Clients, such as mom-and-pop shops and established companies, leverage Klaviyo to acquire, engage, and retain customers and grow on their own terms. Klaviyo was founded in 2012 and is based in Boston, Massachusetts.

SendinBlue provides a SaaS solution that enables B2B and B2C businesses, e-commerce sellers and agencies to build customer relationships through digital marketing campaigns, transactional messaging, and marketing automation. Through its customizable suite of digital marketing services, users can design, send and track integrated campaigns via email, SMS, and other advertising channels. The company was founded in 2012 and is based in Paris, France.

Bluecore offers personalized retention emails for e-commerce firms. Bluecore automatically determines which emails to send in real-time.

ActiveCampaign helps businesses grow by strengthening their relationships with customers through utilizing a blend of automation and human touch. Companies are able to automate many behind-the-scene processes and communicate with customers across channels with personalized, intelligence-driven messages.

Persado is a provider in marketing persuasion technology, a new category within digital marketing. Persado's platform generates persuasive language for communications designed to drive action. The software uses semantic algorithms to map emotions and generate language for marketing communications such as emails, landing pages, mobile, push notifications and social media. By breaking down marketing language into emotional, descriptive, and formatting components, Persado's software linguistically engineers the optimal language, replacing the guesswork of copywriting.