ProveSource offers Free Trial, but MailChimp does not.
MailChimp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
ProveSource is designed for Large Enterprises, Medium Business and Small Business.
The starting price of ProveSource begins at $18/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 ProveSource includes Fomo, Proof, JustProof, Conversion Plus, Super Social Proof, Sooproof, Social Proofy, Trustpulse, Proofly and Prooven.io.