Mailmust offers Free Trial, but DocuPost does not.
DocuPost is designed for Individuals, Medium Business and Small Business.
Mailmust is designed for Large Enterprises, Medium Business and Small Business.
The starting price of DocuPost begins at $2per Check, while pricing details for Mailmust are unavailable.
Some top alternatives to DocuPost includes Mailmust, DocuSend, DocsCloud, InvoiceCloud, Qualified, Workvivo, Postalytics, Mailform, IFTTT, Online Check Writer and Drag.
Some top alternatives to Mailmust includes Campaigner, Moosend and SMTP.