What is Relay.app?

Content last verified May 4, 2026 · by the AI Tools Set Research Team

Relay.app is an automation platform built around a simple idea: some workflows are too important to run fully unattended. It lets you insert approval checkpoints where a person reviews, edits, or approves before a critical step runs, blending automation with human judgment.

AI is woven throughout to draft messages, extract information, and classify content, and the modern builder makes designing these part-automated, part-human flows unusually pleasant. It suits teams automating outreach, onboarding, and approvals.

Key Features of Relay.app

Approval checkpoints: Pause a workflow for a human to review before it continues.
AI assistance in-flow: Draft, extract, and classify content mid-workflow.
Clean modern builder: One of the friendliest workflow editors available.
Multiplayer workflows: Assign steps to teammates as part of a flow.

Use Cases for Relay.app

Automate with a human review step
Route approvals cleanly
Draft-then-approve outbound messaging
Coordinate team handoffs
Onboard customers with checks

Pros & Cons

Pros

✓

Best-in-class human-in-the-loop steps

✓

Polished, modern experience

✓

Good free tier

✓

Strong AI drafting

Cons

✗

Fewer integrations than the giants

✗

Younger, still-growing platform

Pricing

Free

$0 /mo

✓Unlimited workflows

✓Core integrations

✓Human-in-the-loop steps

✓AI steps