Relay.appAI-powered workflow automation with human-in-the-loop controls and deep app integrations.

4.7 (6)

Reviewed by Daniel Nikulshyn·Updated July 2026

Workflow Automation AI Agents Human-in-the-Loop Integrations No-Code Team Collaboration Productivity

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Overview

Relay.app is a workflow automation platform that combines AI agents with traditional triggers and actions to automate business processes across hundreds of connected apps. Users can build multi-step workflows that pull data, generate content with LLMs, and push updates to tools like Gmail, Slack, Notion, HubSpot, Salesforce, and Google Workspace. A distinguishing feature is its built-in human-in-the-loop steps, which let teams add approval, review, or data-entry checkpoints inside otherwise automated flows. This makes Relay useful for use cases like outbound sales, customer onboarding, content review, and internal ops where full automation is risky but manual work is tedious. Workflows can be triggered by app events, schedules, forms, or webhooks, and AI agents can be configured to reason over context, draft responses, or classify inputs before handing results back to downstream steps.

Key features

Multi-step workflow builder with AI steps
Human-in-the-loop approval and review tasks
Hundreds of app integrations
AI agents for drafting, classification, and reasoning
Triggers via webhooks, schedules, forms, and app events
Team collaboration on shared workflows

Pricing

Model: Freemium
Category: AI Agents
Rating: 4.7 / 5 (6)

Use cases

Outbound Sales with Approval Gates

Automate prospect research and AI-drafted outreach across Gmail and HubSpot, with human review steps to approve messages before they're sent to leads.

Customer Onboarding Workflows

Trigger onboarding sequences from form submissions or CRM events, using AI to personalize communications and human checkpoints to verify account setup in Salesforce or Notion.

AI Content Review Pipelines

Generate drafts with LLM steps, route them to teammates for approval via Slack, and publish or store the final version once reviewed.

Internal Ops Request Handling

Classify incoming requests with AI agents, route them through scheduled or webhook triggers, and require manager approval before updating systems like Google Workspace.

Pros & Cons

Pros

Native human approval steps inside automations
Wide range of app integrations
AI agents integrated directly into workflows
Clean, modern visual builder

Cons

Smaller ecosystem than Zapier or Make
Advanced AI features can require trial and error
Pricing scales with usage and steps

Reviews

4.7

Average from 6 ratings.

Olga Ivanova

Apr 11, 2026

Years in this space

I've evaluated a lot of these over the years. What stands out here is team collaboration on shared workflows — handled better than most — and clean, modern visual builder. Worth the time if this is your use case.

Gunnar Eriksson

Jan 28, 2026

Use it every day

Honestly didn't expect to like it this much. Triggers via webhooks, schedules, forms, and app events is exactly what I needed, and aI agents integrated directly into workflows. but I reach for it almost every day now and it just clicks.

Esther Adeyemi

Dec 27, 2025

Compared a few options

Evaluated this against two competitors. Where it wins: multi-step workflow builder with AI steps and wide range of app integrations. Where it lags: advanced AI features can require trial and error. On balance the feature set — especially human-in-the-loop approval and review tasks — justifies the 4 stars for our use case.

Tariq Aziz

Sep 26, 2025

Use it every day

Honestly didn't expect to like it this much. Triggers via webhooks, schedules, forms, and app events is exactly what I needed, and clean, modern visual builder. I do wish smaller ecosystem than Zapier or Make, but I reach for it almost every day now and it just clicks.

Priya Nair

Jun 24, 2025

Skeptical, then convinced

I went in skeptical — most tools in this space overpromise. It actually delivers on aI agents for drafting, classification, and reasoning, and aI agents integrated directly into workflows caught me off guard. still, I'd recommend giving it a real trial.

Devin Walker

May 28, 2025

Use it every day

Honestly didn't expect to like it this much. AI agents for drafting, classification, and reasoning is exactly what I needed, and clean, modern visual builder. I do wish advanced AI features can require trial and error, but I reach for it almost every day now and it just clicks.