Our agents oftentimes have to interface with a few of our vendors that use Salesforce to ingest their emails for customer service, which means Zendesk is emailing to Salesforce. Since Salesforce strips out header data that Zendesk uses to associate replies to an existing ticket, every time our vendor replies, it creates a brand new ticket rather than updating the original one started by our agent.
Any suggestions on how to work around this scenario or to solve it? We currently just keep merging one reply into another but it's a horrible solution and makes researching old tickets impossible.
Is there a way to resolve this or best practices on how to work around this Zendesk limitation?