Penelope should support Regular Expression (regex) matching in Filters.
xref bug 19442 (or maybe that would be depends on...)
Not sure what regex engine was used by Eudora but anyway, if it was not PCRE, that is what it should be.
(In reply to comment #1) > xref bug 19442 (or maybe that would be depends on...) > Bug 19442 just mentions "headers." Eudora also regexes "body". This is absolutely critical. Please keep it that way. Also, as I recall, some of the "character-class" regex expressions didn't work (at least in Mac Eudora 6.2). It'd be helpful if all those worked.
See https://bugzilla.mozilla.org/show_bug.cgi?id=19442 which has been open for more than 9 years.....
Yes, this is a duplicate of 19442 which has been open for over 10 years (!)