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What do these email newsletter services do to prevent their e-mails from going to spam folders?

What do these email newsletter services do to prevent their emails from going to SPAM folders?

  • These email newsletter services probably send millions of emails per day. How do they successfully do this without having their system black listed? Don't services like otmail/gmail block emails if they reach a certain threshold from a single domain? I'm interested in running a service that will be sending a lot of emails on behalf of other companies, so just want some tips/ideas on how they do it at such a large scale. (I might not be admining the box, but want an idea of what is involved technically)

  • Answer:

    An engineer at MailChimp has written a comprehensive document titled "Email Delivery for IT Professionals" that touches all the points that you mention, and much more. You can download the document from http://mailchimp.com/resources/guides/email-delivery-for-it-professionals/.

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There are a variety of methods these bulk mail houses use to prevent being caught by spam systems. Scrupulous SPF records Correct use of DKIM Inclusion of a variety of mail-header items to indicate: Abuse report location Unsubscribe information Bulk status Strong attention to language to ensure it isn't spammy And most importantly: Actively work with webmail and spam-service providers to certify themselves as perfectly legitimate mailers. The process varies with each vendor, and not all do it. And even that isn't enough to be 100%, but it'll get most places.

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