Respond.io vs Smooch (Sunshine Conversations)
Converge Team
Side-by-side comparison for 2026
| Feature | Respond.io | Smooch (Sunshine Conversations) |
|---|---|---|
| Starting Price | From $199/mo | From $115/seat/mo |
| Best For | Medium to large enterprises needing advanced automation and AI-powered customer engagement across multiple channels | Existing Zendesk customers needing omnichannel messaging |
| Standout Feature | Sophisticated AI agents that can handle complex customer conversations and automatically qualify leads through intelligent workflows | Deep integration with Zendesk ecosystem |
| Free Plan | ✗ | ✗ |
| G2 Rating | 4.8/5 | 4.2 |
Respond.io and Smooch (now Sunshine Conversations by Zendesk) both tackle customer messaging but from different angles. Respond.io offers a standalone conversation management platform, while Smooch provides messaging infrastructure that integrates deeply with Zendesk's ecosystem.
The choice often depends on whether you're already invested in Zendesk's suite or need a specialized messaging solution that operates independently.
Feature Comparison
Respond.io delivers comprehensive omnichannel messaging with strong WhatsApp Business integration, advanced workflow automation, and AI-powered conversation routing. Its broadcast capabilities and contact management are particularly robust for marketing-driven conversations.
Smooch excels in its seamless integration with Zendesk's ticketing system, allowing conversations to flow naturally between messaging and traditional support channels. It offers solid API flexibility and handles conversation continuity exceptionally well across different touchpoints.
The integration depth differs significantly: Respond.io operates as a complete standalone solution, while Smooch's strength lies in enhancing existing Zendesk implementations.
Pricing Comparison
Respond.io pricing starts around $79/month with per-contact billing, scaling based on active contacts and feature requirements. Higher tiers unlock advanced automation and analytics capabilities.
Smooch pricing is bundled within Zendesk plans, with messaging capabilities included in Suite Professional ($89/agent/month) and higher tiers. Standalone Smooch pricing varies based on conversation volume and integrations needed.
Consider the total ecosystem cost: Respond.io is self-contained, while Smooch requires Zendesk licensing, potentially making it more expensive for messaging-only use cases.
Respond.io
Pros
- ✓ Comprehensive omnichannel support with deep integrations
- ✓ Advanced AI capabilities for automated customer interactions
- ✓ Powerful workflow automation with visual builder
Cons
- ✗ Complex setup and learning curve for advanced features
- ✗ Higher cost structure with per-agent pricing model
- ✗ WhatsApp API charges add significant ongoing costs
Smooch (Sunshine Conversations)
Pros
- ✓ Strong Zendesk integration
- ✓ Good channel coverage
- ✓ Mature platform
Cons
- ✗ Per-agent pricing gets expensive
- ✗ Complex setup process
- ✗ Limited customization options
Verdict
Choose Respond.io if you want a dedicated messaging platform with advanced automation and don't require Zendesk integration. Choose Smooch if you're using Zendesk Suite and need seamless messaging integration across your support ecosystem.
Choose Respond.io if: You need a powerful standalone messaging platform with advanced automation and aren't tied to Zendesk's ecosystem.
Choose Smooch if: You're already using Zendesk and want to add sophisticated messaging capabilities with seamless ticket integration.
For businesses seeking effective customer messaging without the complexity of enterprise suites, Converge offers a streamlined solution at $49/month flat rate, providing essential messaging features without vendor lock-in or per-contact fees.
Looking for more options? Browse all 750+ platform comparisons, or see all Respond.io comparisons and all Smooch (Sunshine Conversations) comparisons.