The "data" of the attachment array needs to be the actual contents of the file rather than a pointer to the file, PROC HTTP would not know to resolve that to the physical file and then properly encode it, it is sending to the mail service literally "/tmp/Summary_SR_20240405_1334.zip". I think you'd need to base64 encode the file and put it in the "mail" file. ... View more

https://communities.sas.com/t5/SAS-Viya/Example-for-sending-email-using-REST-Api/m-p/888375#M1967 contains the answer to your question ... View more