Email Validation

This straightforward Ruby class will connect to Mailgun's Email Validation Service and tell you if the provided email is valid or not.

Configuration

Configure your Mailgun public key:

EmailValidation.configure do |config|
  config.mailgun_public_key = 'pubkey-5ogiflzbnjrljiky49qxsiozqef5jxp7'
end

Use instructions

EmailValidation::Validate.new("[email protected]").valid? # => false

or do it in two steps if that's more your style:

validation = EmailValidation::Validate.new("[email protected]")
validation.valid? # => false

Background Job

I suggest you create a background job to check email validity. You don't really want to depend on Mailgun being online in order to register a new user. A possible solution using a boolean field on User is this:

require 'email_validation/validate'

class EmailValidationJob < ApplicationJob
  queue_as :default

  def perform(user)
    user.update email_valid: email_valid(user.email)
  end

  private

  def email_valid(email)
    EmailValidation::Validate.new(email).valid?
  end
end

You can then ask the user to change their email.

Installation

Add this line to your application's Gemfile:

gem 'email_validation', github: 'sign2pay/email_validation'

Currently this gem hasn't been released to Rubygems. We would need a new name I think. If anyone is interested in me doing that, open an issue.

To install this gem:

$ bundle

Development

rake test

Contributing

Open an issue or submit a pull request. We'll work it out!

Copyright

Copyright Sign2Pay NV. Licensed using the MIT license.