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copied!<p>Google's OAuth1 protocol is now deprecated and many gems have not yet updated to use their OAuth2 protocol. Here is a working example of fetching email from Google using their OAuth2 protocol. This example uses the <a href="https://github.com/mikel/mail" rel="nofollow"><code>mail</code></a>, <a href="https://github.com/nfo/gmail_xoauth" rel="nofollow"><code>gmail_xoauth</code></a>, <a href="http://www.omniauth.org/" rel="nofollow"><code>omniauth</code></a>, and <a href="https://github.com/zquestz/omniauth-google-oauth2" rel="nofollow"><code>omniauth-google-oauth2</code></a> gems.</p> <p>You will also need to register your app in <a href="http://code.google.com/apis/console" rel="nofollow">Google's API console</a> in order to get your API tokens.</p> <pre><code># in an initializer: ENV['GOOGLE_KEY'] = 'yourkey' ENV['GOOGLE_SECRET'] = 'yoursecret' Rails.application.config.middleware.use OmniAuth::Builder do provider :google_oauth2, ENV['GOOGLE_KEY'], ENV['GOOGLE_SECRET'], { scope: 'https://mail.google.com/,https://www.googleapis.com/auth/userinfo.email' } end # ...after handling login with OmniAuth... # in your script email = auth_hash[:info][:email] access_token = auth_hash[:credentials][:token] imap = Net::IMAP.new('imap.gmail.com', 993, usessl = true, certs = nil, verify = false) imap.authenticate('XOAUTH2', email, access_token) imap.select('INBOX') imap.search(['ALL']).each do |message_id| msg = imap.fetch(message_id,'RFC822')[0].attr['RFC822'] mail = Mail.read_from_string msg puts mail.subject puts mail.text_part.body.to_s puts mail.html_part.body.to_s end </code></pre>

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