Attach the output of a loop over items (binary files) to an smtp node

Questions
1

Overview

Thank you in advance for your help!

I’m running a self-hosted n8n instance (fully up to date) and need to extract all the binary PDF files produced by my last Loop execution. These PDFs are generated inside a loop via successive HTTP Requests.

Problem:
I can’t use the “Split to Items” or “SplitInBatches” methods to perform the HTTP calls, because each request requires a custom header—and that header is lost on the second iteration.

WORKFLOW

Objective

  • Capture the n binary PDF files output by the loop
  • Attach them to a SMTP node

Additional Context

  • All private or production-specific information has been removed from the workflow configuration.
  • The Loop node outputs as many binary items as there are iterations, but I’m unable to extract them all at once.

Question

How can I collect and pass along all n binary items generated by the Loop node?

2

Hi and welcome to the community.
you could try to create a temp folder, save the files to disk, when done with the loop zip everything from the folder then mail it.