Large sample mbox file for testing purposes

Question

For developing a mail client I need a very large mbox test file containing as many mails as possible. Preferably >100.000 mails (>10GB).

It should be realistic mail data since I don't only want to test performance but also mail filters and search.

Thanks in advance for any hints where to get stuff like that.

Answer 1

You can collect .mbox text files using a search engine. For example, a google search for filetype:mbox pipermail results in plenty of .mbox data.Instead of pipermail, from works as a search string.

Individual .mbox files can be concatenated:

cat mboxfile1 > mboxfile
echo >> mboxfile
cat mboxfile2 >> mboxfile

p.s. It's not the data that's unethical, it's what you do with it. Please act ethically!