Sinatra

Learn how to integrate Mailtrap with Sinatra applications to send emails using the Email API.

This guide shows you how to integrate Mailtrap with Sinatra and send emails using the Email API.

Before we start, you'll need to:

• Verify your sending domain
• Create and save an API key

Send emails using Sinatra and Mailtrap

To integrate Mailtrap and send emails via Sinatra, copy the following script into your configuration:

app.rb

require "sinatra"
require "mailtrap"

set :port, 5000
set :bind, "0.0.0.0"

get "/" do
  content_type :json

  mail = Mailtrap::Mail.from_content(
    from: { name: 'Mailtrap Test', email: 'YOUR-EMAIL-HERE' },
    to: [{ email: 'RECIPIENT-EMAIL-HERE' }],
    subject: 'Hello World',
    html: '<strong>it works!</strong>',
  )

  client = Mailtrap::Client.new(api_key: 'YOUR-MAILTRAP-API-KEY-HERE')
  response = client.send(mail)

  response.to_hash.to_json
end

Once you copy the script, make sure to:

• Insert your Mailtrap API token in the api_key: field
• Enter your email address in the from: field
• Enter your recipient's email address in the to: field

To learn more about API integration, see Mailtrap Email Sending API Integration.