I need to be able to convert HTML email messages saved as text files (.eml or .msg) to PDF documents, one PDF per email, retaining formatting and images.
Are there any Linux tools that will allow me to do this from the command line (so it can be scripted)?
.eml files are just text files, so you can print them using standard methods.
The easiest utility for text conversion is arguably Pandoc. This utility should cover any html email as well, although you’ll want to specify the format manually since .eml isn’t very standard when it comes to text data.
pandoc -f html -o outputfile.pdf inputfile.eml