I need help for A build my workflow

For_n8n_learning · December 8, 2025, 1:40pm

Here my workflow to get only pdf from Gmail and upload to Google Drive and Append in g sheet .

My problem is ones i upload a pdf i want to filtered out the existing pdf in Google Drive , I want to upload only new pdf.

I am can’t able to do this , please Help me

salmansolutions · December 8, 2025, 2:12pm

There are different ways to achieve this functionality.
How I would go about this:

Create a Label in Gmail e.g.: “Uploaded”
Filter your received Gmail messages, so only proceed with the items that are not having this label
When successfully uploaded, add the label via Gmail node to the email item

Another option:

Add a column to your sheet that is populated with the Gmail message Id
Filter your gmail items by this Id and only proceed with the items that are not in your sheet
When appending the row in sheet, add the message Id

Lisa_Zigel · December 8, 2025, 2:35pm

What if you append the row before adding the PDF to your drive? Then your flow will know what’s already been added and only add the new PDF.

Parintele_Damaskin · December 8, 2025, 8:36pm

Between your Code and the Drive nodes, you can put an “Remove Duplicates” node…

It has a very extensive flexibility, for remembering node or workflowexecution data.

Check here docs :

Cheers!

For_n8n_learning · December 10, 2025, 1:28pm

This problem has bin Solved