def self.newsletters
gmail = Gmail.new(ENV['GMAIL_USERNAME'], ENV['GMAIL_PASSWORD'])
parsed_links = gmail.label('newsletter').emails.each_with_object({}) do |email, links|
mail = Mail.read_from_string email.message
newsletter_name = mail['List-Id'].value[/(.+)</, 1].strip
doc = Nokogiri::HTML(mail.html_part.body.decoded)
newsletter_links = Parser.for(newsletter_name).parse(doc)
links[newsletter_name] = newsletter_links
end
gmail.logout
parsed_links.to_json
end