Mailspring Sync Engine ("Mailsync") Copyright 2016-2018 Foundry 376, LLC., all rights reserved.
Redistribution and use of the Mailspring Sync Engine in binary form, without modification, is permitted, provided it is used in conjunction with the Mailspring desktop application under it's original name. ("Mailspring")
Use of the Mailspring Sync Engine in other applications, in forks of Mailspring, or in new projects requiring email requires written permission from Foundry 376, LLC. Please contact [email protected] for licensing information and source code inquiries.