Many Clients are using Foxit PDF:
Use the app from right within supported Office applications (Microsoft®Word, PowerPoint, and Excel 2010/2013/2016).
Mark selected area or objects for redaction.
Create a traditional redacted PDF or a hybrid PDF that hides sensitive content by default, but makes it visible with the right credentials under Microsoft® Rights Management services (RMS).
Create regular (non-redacted) PDFs from Microsoft® Word, PowerPoint, Excel, Outlook and Visio, and email the created PDFs as attachments if needed.
Convert Word mail merges (letters, email messages, or labels created through Mail Merge in Microsoft® Word) to PDFs all at once.
Use password protection, certificate protection, and RMS protection for additional control over your PDF files.