Quote from History_Hunter on October 16, 2020, 6:32 pm

Instead of creating and storing a PDF and attaching it or linking it to the main email entry in Zotero, consider just dragging and dropping your emails to a directory and using the resulting .eml  files instead. The .eml files will open with Mac Mail exactly as you received them, including attachments. By all accounts, .eml files are transportable between a number of mail programs, so this may well work even if you later need to view them on another platform. If you need to re-import them into your Mail program, that's possible too. It's also likely a bit faster to add emails this way, rather than make and export PDFs.

Anyways... Just a thought.