Brevo (formerly Sendinblue) is an all-in-one customer engagement platform that combines email and SMS marketing, CRM, automation, live chat, and transactional email. It offers a generous free plan with 100,000 contacts and charges per email sent rather than per contact.

Braze

4.5

customer-engagementmarketing-automationpush-notifications

Customer engagement platform for orchestrating personalized messaging across push notifications, email, in-app messages, SMS, and more for mobile-first brands.

Customer.io

4.4

customer-engagementemail-marketingsms-marketing

Customer.io is a customer engagement platform that unifies data, messaging, and AI to deliver personalized experiences across email, SMS, push, in-app, and other channels. It features automated customer journeys that improve with use and AI agents that build campaigns from conversational prompts.

Dotdigital

4.4

email-marketingcustomer-engagementcross-channel

A global customer engagement platform with AI-powered insights, personalization, and cross-channel capabilities including email, SMS, and WhatsApp.

Ortto

4.4

marketing-automationcustomer-data-platformemail-marketing

All-in-one marketing automation and customer data platform unifying customer journeys, email/SMS/push campaigns, live chat, and analytics in a single tool.