Ortto

Brevo

4.4

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.

CleverTap

4.6

All-in-one customer engagement platform unifying data analytics, AI personalization, experimentation, and omnichannel campaign orchestration to maximize customer lifetime value.

Customer.io

4.4

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.

OneSignal

4.3

OneSignal is a customer engagement platform offering push notifications, email, SMS/RCS, and in-app messaging across unified customer journeys — used by 2M+ developers and businesses with a generous free tier.

Klaviyo

4.4

Klaviyo is an autonomous B2C CRM and AI marketing platform that unifies customer data and automates personalized campaigns across email, SMS, RCS, WhatsApp, and mobile push. It features AI-powered campaign generation and autonomous customer support agents.

GetResponse

4.7

GetResponse is an AI-powered email marketing and automation platform designed to help businesses convert customers and build repeat revenue. It unifies email, SMS, landing pages, webinars, courses, and automation in one all-in-one marketing platform.