VYPER offers Free Trial, but MailChimp does not.
MailChimp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
VYPER is designed for Medium Business and Small Business.
The starting price of VYPER begins at $75/Month when Billed Yearly, while pricing details for MailChimp are unavailable.
Some top alternatives to MailChimp includes Campaigner, Moosend and SMTP.
Some top alternatives to VYPER includes Rafflecopter, Make My Contest, Atipso, EasyPromos, Votigo, OpenWater Awards, Contest Rebel, SweepWidget, Queue, ShortStack and Referaly Lite.