Selectively ignore certain attachment types from being converted to PDF
You can force the PDF add-in from processing and converting certain attachment types to PDF output by defining a list of file extensions that would be ignored. You can do this from Outlook > PDF add-in toolbar > Output Settings > Exemptions tab.
NOTE: Email to PDF add-in support seamless conversion of the following 120+ attachment types to PDF:
zip, msg, eml, pdf, docx, docm, doc, htm, html, mht, mhtml, dotx, dotm, dot, rtf, txt, odt, wpd, wps, xl, xlsx, xlsm, xlsb, xlam, xltx, xltm, xls, xlt, xla, xlm, xlw, odc, uxdc, ods, csv, prn, pptx, ppt, pptm, ppsx, pps, ppsm, potx, pot, potm, odp, bmp, cut, dcx, dds, ico, gif, jpg, jpeg, lbm, lif, mdl, pcd, pcx, pic, png, pnm, psd, psp, sgi, raw, tga, tif, tiff, act, pal, wal, raw, nef, nrw, cr2, crw, pef, arw, srw, sr2, orf, mrw, mdc, dcr, kdc, mos, erf, raf, 3fr, dng, mef, rw2, x3f, srf, ari, bay, cri, cap, iiq, eip, dcs, drf, k25, fff, ptx, pxn, r3d, rwl, rwz, cs1, cxi, j6i
Any other attachment types that are not included in the supported list will NOT be processed by the PDF add-in for PDF conversion. For instance, if an attachment is of .exe or .msi type, the add-in will ignore such attachments. So, you don’t need to explicitly define such unsupported file types in the exemptions list. However, if you want the add-in to ignore certain supported file types from inclusion in the PDF conversion, you can do so.
For more information, refer to the product page at https://www.assistmyteam.com/email-to-pdf-for-outlook/