10 Best Customer.io Alternatives for Founders [2026 Updated]

1. Braze

• Type: Paid
• URL: https://www.braze.com
• Overview: Braze is an enterprise customer engagement platform for orchestrating personalized messaging across email, push, SMS, in-app, and web. It offers real-time data processing, journey canvases, and advanced segmentation for large consumer brands.

2. Iterable

• Type: Paid
• URL: https://iterable.com
• Overview: Iterable is a cross-channel marketing platform that lets teams build automated, data-driven campaigns across email, SMS, push, and in-app messages. It provides visual workflow tools, AI-powered optimization, and flexible data ingestion for growth-focused teams.

3. OneSignal

• Type: Paid
• URL: https://onesignal.com
• Overview: OneSignal is a customer messaging platform covering push notifications, email, SMS, and in-app messages with journey automation. It has a free tier and usage-based paid plans that suit startups through large apps.

4. Klaviyo

• Type: Paid
• URL: https://www.klaviyo.com
• Overview: Klaviyo is a marketing automation platform for email and SMS, built around behavioral data and deep ecommerce integrations. It offers flow builders, segmentation, and analytics to drive repeat purchases.

5. Brevo

• Type: Paid
• URL: https://www.brevo.com
• Overview: Brevo is an all-in-one marketing platform offering email, SMS, WhatsApp, and transactional messaging with automation workflows. It has a free plan and affordable paid tiers, making it popular with small and mid-sized businesses.

6. MoEngage

• Type: Paid
• URL: https://www.moengage.com
• Overview: MoEngage is an insights-led customer engagement platform for mobile and web brands. It supports journey orchestration across push, email, SMS, and in-app channels with analytics and AI-driven personalization.

7. CleverTap

• Type: Paid
• URL: https://clevertap.com
• Overview: CleverTap is a customer engagement and retention platform combining analytics with multichannel messaging. It helps consumer apps segment users, automate lifecycle campaigns, and measure retention.

8. ActiveCampaign

• Type: Paid
• URL: https://www.activecampaign.com
• Overview: ActiveCampaign is a marketing automation and CRM platform with email, SMS, and behavior-triggered automations. It offers visual automation builders and segmentation suited to small and growing businesses.

9. Mailchimp

• Type: Paid
• URL: https://mailchimp.com
• Overview: Mailchimp is a widely used marketing platform for email campaigns, automations, and audience management. It includes a limited free plan and paid tiers with customer journeys and behavioral targeting.

10. Mailjet

• Type: Paid
• URL: https://www.mailjet.com
• Overview: Mailjet, part of the Sinch family, is an email platform for marketing campaigns and transactional messages. It provides a drag-and-drop editor, automation, and an email API for developers and marketers.