Compare Relay and Spark Email. See features, pricing, and which is best for AI email support.
| Feature | Relay | Spark Email |
|---|---|---|
| AI Email Drafting | Multi-LLM team AI drafts | Spark +AI email assistant |
| Knowledge Base | Built-in KB for AI context | No KB — personal context |
| Team Features | Shared inbox with AI review | Shared inbox (limited AI) |
| Multi-LLM Support | GPT-5, Claude, Gemini | Single AI model |
| Starting Price | $49/mo AI platform | Free tier available |
Relay
Full KB-powered draft generation
Spark Email
AI writing suggestions
Relay has deeper AI for support email
Relay
Full AI support workflow
Spark Email
Basic shared inbox features
Relay has deeper team support
Relay
Customer support teams
Spark Email
Professional email users
Different primary audiences
Spark offers a free email client. Relay is $49/mo for team AI email support.
Spark is an email client with AI writing help. Relay is a team email support platform with KB and multi-LLM drafting.
Spark has Spark +AI for writing suggestions. Relay offers full AI draft generation with KB context.
Spark has basic shared inbox features. Relay is purpose-built for team email support with AI.
Start your free trial and see why teams choose Relay over Spark Email for AI email support.