.OTM File Extension
File TypeOutlook Macro File
What is an OTM file?
Macro created with Microsoft Outlook, an email application; contains scripted functions written in Microsoft's VBA language; often used for automating repetitive tasks, such as scanning email messages or collecting file attachments.
By default, the Windows Vista and Windows 7 versions of Outlook store macros in the file VbaProject.otm. Outlook saves this file in the following user directory: \Roaming\Microsoft\Outlook.
NOTE: You must enable macros in the Outlook security settings in order to run them.