Allowed File Formats [Attachments]

Can i/we have rich text format (.rtf) and open document format (.odt) added to the "Valid File Extensions" for attachments?

thanks

Dear intel,Already Made My Decision
Never trust a computer you can't repair yourself.
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scientology has been getting alot of attention recently

When the rich wage war, it is the poor who die.
Where are the WMD's that our governments used to justify the war?