Extension	File Type Developer	File Category	File Type Description	Software	Software Developer
.MAB	Mozilla	Uncommon Files	Mozilla Address Book	Mozilla Thunderbird	Mozilla
.MAR	Microsoft Corporation	Database Files	Microsoft Access Report	Mozilla Thunderbird	Mozilla
.MBOX	Unknown Developer	Data Files	E-mail Mailbox	Mozilla Thunderbird	Mozilla
.MIM	Internet Engineering Task Force	Encoded Files	Multi-Purpose Internet Mail Message File	Mozilla Thunderbird	Mozilla
.MIME	Various Developers	Encoded Files	Multi-Purpose Internet Mail Extension	Mozilla Thunderbird	Mozilla
.MSF	Mozilla	Uncommon Files	Mail Summary File	Mozilla Thunderbird	Mozilla

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