OptinMonster

Omnisend

Omnisend is an omnichannel marketing automation platform for ecommerce businesses. Omnisend allows you to add several channels to the same automation workflow for seamless communication via email, SMS, web push notifications, and more.

ActiveCampaign's platform gives businesses of all sizes access to hundreds of pre-built automations that combine email marketing, marketing automation, CRM, and machine learning for powerful segmentation and personalization across social, email, messaging, chat, and text.

BigCommerce is an eCommerce solution that runs on its own servers — so you don’t have to buy web hosting or install anything on your computer to use it. With tons of built-in features, data tools, and more, BigCommerce is best for large or fast-growing businesses.

Customer.io is an automated messaging platform for tech-savvy marketers who want more control and flexibility to craft and send data-driven emails, push notifications, and SMS messages.

Klaviyo is the best in class email marketing solution for eCommerce. It's powerful because it connects to your store, and you can create awesome customer segments based on past purchasing behaviors, customer preferences, and even future predictions of spending.