... That happens to be a Python alternative to PDFtk[1]. It’s been kind of abandoned in recent years, though. Also, in the early times of OLE 2.0 MS Office included a utility called Binder that could put several Office documents in a single file and edit them using a common interface. Nothing came of it. [1] https://github.com/hellerbarde/stapler. - Source: Hacker News / about 1 year ago

On Linux I like to use: https://github.com/pdfarranger/pdfarranger for such tasks. - Source: Hacker News / 10 months ago

I see some questions in the comments about document splitting and if you are using PDF for the export in scanning, this adds an extra step but may be valuable in the long run. For Linux users at least, there is "pdfarranger" which most distros have. You can install that, load the PDF and re-arrange pages, remove pages, etc. Source: about 1 year ago

I like PDF Arranger for converting JPEGs to PDFs (open source on Windows) https://github.com/pdfarranger/pdfarranger. Source: about 1 year ago

I have always only been using PDF Arranger for manipulating PDF files (merging different files, arranging, adding, deleting pages) and I'm wondering if there really is no KDE equivalent for that application. Source: about 1 year ago

For merging, check out PDF Arranger. If you need to turn those emails or anything else into pdf, you can use any pdf print driver, and then put it all together with pdf arranger. For the stamps, LibreOffice Draw should do the trick. It won't be an automatic one click type of thing like I'm guessing it is in Adobe, but it's free. Source: over 1 year ago