About Us has set itself the goal of testing as many providers as possible for the professional and voluminous sending of marketing emails with regard to the deliverability under conditions that are as identical as possible.

Although most of the tools available for bulk mailing are functionally up-to-date, they often have the major weakness, particularly when it comes to sending and successfully delivering emails, which can lead to a considerable drop in sales for the email sender.

Once a month, new reports are published on, which show all the data collected from the previous month on the email deliverability of tested providers in tabular and graphical form.

When testing and comparing, great importance is attached to transparency and fair test conditions. All providers should have the same chances of being able to achieve accurate test results through their email deliverability performance.