We needed a cheap, simple and efficient way to quickly test the quality of our own newsletters. What may pass in mail-tester, might not in your own office inbox. All spammers of the world would use mail-tester if it was perfect.
We simply built on our own tool. Now we’re sharing it with everybody for free.
We’re geeky email software engineers. We can let you imagine how such people look like.
You can’t. But you can do a lot to improve your chances, like getting a perfect score on mail-tester.
All spam filters work differently. What may pass in mail-tester, might not in your own office inbox.
It also depends on user preferences. For example, I hit on “this is spam” button in my Yahoo. But you don’t. Yahoo will adapt to each person.