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Use MailDex to index, search, view, and export email content, including Microsoft Outlook MSG, EML, PST, OST, and MBOX files. MailDex does not require MAPI to be installed on the computer to work with Outlook email files.
We've also added support for OLM and EMLX files from MacOS mail and MS Outlook for Mac. (2022)
You can also view message headers, bodies, attachments and perform various actions, including exporting them to different file formats such as PDF. MailDex can bulk print and export email content.
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MBOX - Open format mailbox archive used by Mozilla Thunderbird and other email programs. It may contain file attachments.
OLM - OLM file is a data file of supported by Mac Outlook. It is a file format that is used to store mailbox data like emails, contacts, calendars, notes, task, journals. (2022)
EMLX - EMLX files are simple text-based files that can be opened in any text editor like Notepad. Apple Mail file (2022)