...Just wanted to make sure everyone knows there is NO difference in a safelist or a mailer.
I call them safelists mainly because it is their origionial name, but also called them mailers before 2010... and so did others.
Having one or two email fields does not make it a safelist, or a mailer - It is the same thing.
Having credits or not does not make it a safelist, or a mailer - It is the same thing.
It is a very old advertising method and not new.
It was "mandatory" to have 2 email addresses IF the owner or programmer wanted it.
My safelists have had either.
My mailers have had either.
Neither name is new and if someone says otherwise, then they were not around back then.
People have been doing 1 or 2 email fields since year 2000, or before, and use of credits.
It had nothing to do with the name of the thing (safelist or mailer)
Back in the day (and I am sure today) people filtered their safelist mail. Owners wanted to contact them but if filtered, their emails did not get seen. it depended on the owner, the programmer of a script and how they wanted it.