CPays is linked with Playtech (Playtech actually owns them though they operate totally under their own management).
REMEMBER THIS IS THE PRIVATE AREA AND THIS INFORMATION IS CONFIDENTIAL.
I have never heard that Casino Partners is owned by the same group and in the past they both seemed to REALLY dislike each other.
Regarding the email, it sounds like a motivational attempt. The rep who sent it was basing that email on a dormant account. I doubt they would do this to you on your active account.