They all look they are generating 'legal' MIME information. (Although I'm willing to be proved wrong on that.) The question is which produces the best MIME-type for your files. From what you've shown, File::MIMEInfo::Magic seems to do a fairly good job on a wide variety of files, although it is possible one of the others does a better job on the files you most commonly send.

As for matching what your email client generates: It's got it's own system for doing this, and it may or may not generate a better MIME type for any specific file.

Basically, there may be several different MIME types that could be used for a specific file, depending on the level of specificity available to the software on either end. In general more specific is better, but I don't think it is an error to list a more generic type as long as it still correctly describes the file.

In reply to Re: Comparing different MIME type checking modules by DStaal
in thread Comparing different MIME type checking modules by saurabh.hirani

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