Invoice email failing with "Unexpected character encountered while parsing value"? This usually means the attached PDFs are too large. This guide explains the cause and the fix.
The full guide covers:
The error and why it happens
The attachment size limit
Compressing files and resending
What to do if the file is under the limit and it still fails
Also known as: invoice won't send, invoice email error, unexpected character, attachment too large, submit invoice failed.