Actionmailer help

Hello,

  1. I sent email but the attachment cann’t be read and i don’t know
    why?!! I used this help:
    http://wiki.rubyonrails.org/rails/pages/HowToSendEmailsWithActionMailer

  2. let us can be obtained an acknowledgement of delivery with
    Actionmailer or know if an email is valid?

thx.

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