Ruby on Rails

Hello I have a problem with the content type of ActionMailer. I am using markit-up and when I submit the form and send email with the entered message I get this in my box:
<a href="http://gmail.com">This is a message</a>. I have this in my mailer:    
       mail(:content_type=>"text/html",:to=>@email,:subject=>"Generated certificates",:body=>issuer_mes.body)

 where issuer_mes.body is the entered message. Can you help me? Thanks in advance :)

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