AtomPark Software, Inc.
Complaint 346070 Details

Those guys behind (AtomPark) were legit in the past, but now they become scammers and started to rip off customers as well as affiliates. I was promoting their products from the last few years and already delivered them a lot of customers through sales.

So, after consuming a lot efforts/energy and time of their loyal affiliate marketers that they spent on promotion of their products through video marketing, guest posting, forums, blog post reviews and many more.. They silently change the commission percentage to 1% for all of the affiliates, which was before 30%. Let me do the math for you, if you'd generate them a sale of $300, then you'll get only $3 commission out of it.

You can also confirm it from their company pages, it is still 30% mentioned over there, which is just a BLATANT lie.
http://www.massmailsoftware.com/affiliate-signup.html
http://www.massmailsoftware.com/reseller-program.html
https://www.atompark.com/affiliate-signup/

Here's the screenshot from Avangate (a payment processor) affiliate program panel:
http://i.imgur.com/5tmR5lO.jpg

Another thing that came to my knowledge, this company "Mass Mail Software/ Email-Masivo aka AtomPark" is drowning and getting out of business. So, they're using these type of techniques to rip off as much as possible.

This company has multiple domains for the same products. In simple words they are just using multiple names as fishing knots.
Here's the list of domains they're using to rip off:
http://www.massmailpartner.com/
https://myatompark.com
http://www.massmailsoftware.com
http://www.amailsender.com
https://www.atompark.com
http://www.atomicemailstudio.com
http://www.email-masivo.com
http://www.atomiccc.com
http://tuttoemail.com/

At the end, I'd suggest everyone not to go for their products. Because it could be possibility that it'll work for you for the next few days or months. But at the end you'll have only dead product in your hands without any update or customer support.

P.S. The guys behind Avangate are honest and know their business. I'm extremely happy with their service. It is a payment processor solution.