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Re:How to Avoid Spam Filters by caminante on Wednesday October 28, 2015 @03:26PM (#10466694)
Have ESP's recovered any ground or power?

A couple years ago, I looked at switching from an in-house email server to an ESP -- MailChimp being one. Right as I was performing the cost-benefit, two things happened:

  1. Gmail started re-hosting email images, nullifying passive email-open 
     detection features even if the user ALLOWED images.[1]
  2. MailChimps added language around distribution caps.
As a minor dealbreaker, ESP's force mandatory unsubscribe links for CAN-SPAM compliance, no matter how small/private your list becomes.

[1] http://arstechnica.com/information-technology/2013/12/gmail-...

Re:How to Avoid Spam Filters by dexiwz on Thursday October 29, 2015 @10:01AM (#10471006)
Not all ESPs force unsubscribe links. We ultimately put liability on our customers for CAN-SPAM compliance. We had CAN-SPAM compliance checks on by default, but they could be disabled. As to your original question, no, ESPs have not gained much in the way of power. I might be in the minority in my industry, but I think this is good. All of the arguments against page-based ads can be used against email-based ads. But in this case, the users have won, and have full power over their inbox.