---
title: Rails
description: Learn how to integrate Reloop with Ruby on Rails.
icon: siRubyonrails
---
> For the complete documentation index, see [llms-docs.txt](/llms-docs.txt) or the site index [llms.txt](/llms.txt). Full docs corpus: [llms-full-docs.txt](/llms-full-docs.txt). Prefer markdown URLs (append `.md`) for agent consumption. Product skill: [skill.md](/skill.md).


# Rails Integration

Integrate Reloop into your Ruby on Rails application.

## Installation

Add the official Ruby SDK to your Gemfile:

```ruby
gem 'reloop-ruby'
```

And run:

```bash
bundle install
```

## Setup Credentials

Set your API key in your environment variables:

```bash
export RELOOP_API_KEY="re_your_api_key_here"
```

## Sending an Email

Define a controller or a mailer to send emails:

```ruby
class EmailsController < ApplicationController
  def create
    reloop = Reloop::Client.new(api_key: ENV['RELOOP_API_KEY'])
    
    begin
      response = reloop.mail.send(
        from: 'onboarding@reloop.sh',
        to: 'delivered@resend.dev',
        subject: 'Hello from Rails',
        html: '<p>Congrats on sending your first email via Reloop from Ruby on Rails!</p>'
      )
      render json: response
    rescue => e
      render json: { error: e.message }, status: :internal_server_error
    end
  end
end
```