Has anyone used Lasso with Sparkpost? I’ve used Mandrill for the past few years but now moving to Sparkpost and having some trouble figuring out how the MIME Headers should be sent. Below is some simplified sample code. This worked with Mandrill but there are no extra headers (i.e. “X-MSYS-API”) coming through.

local: 'sparkpost_specific'= (array: 'campaign_id'='test123_Campaign');
var: 'MIME_Headers' = (map: 'X-MSYS-API'=#sparkpost_specific);

Email_Send:
-immediate,
-host = 'smtp.sparkpostmail.com',
-username = $sp_un,
-password = $sp_ps,
-port = 587,
-to=$email,
-From=$from,
-HTML=$body_content,
-Subject=$subject,
-ExtraMIMEHeaders=$MIME_Headers;


Thanks,

Stephen
StudioThought, LLC
www.studiothought.com


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