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Guide Topic
Attachment size limits for Microsoft Outlook.
TCC Default Limits
TCC default limits are currently set as follows:
- Limit to Send: 35840KB
- Limit to Receive: 36864KB
If you experience issues or receive errors when sending or receiving attachments, please Submit a Help Ticket. We can verify your current limits and, where possible, adjust them to meet your needs.
Information from Microsoft
Microsoft provides detailed guidance on this topic in their article: Message size and recipient limits in Exchange Server (external link, opens in new tab). This includes information on:
- Default attachment size limits for different Outlook and Exchange environments
- Administrator-configurable limits and policies
- How message size limits apply to emails with multiple attachments
⚠ Note: Microsoft regularly updates these limits and related policies. We recommend checking their official documentation for the most current information.