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Email Attachment Size Limits
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Introduction
When scheduling emails, attachment size limits can cause failures if the total email size exceeds the allowed threshold. Different email services have specific file size restrictions, and exceeding these limits may lead to scheduling failures or email rejections.
This KB provides email attachment size limits along with official documentation links, helping users ensure their scheduled emails comply with size restrictions.
Email Service | Sending Limit | Notes |
---|---|---|
Gmail | 25 MB | Files exceeding 25 MB are automatically uploaded to Google Drive. |
Outlook | 20 MB | Larger files can be shared via OneDrive instead of attachments. |
Office 365 (Exchange Online) | 25 MB (default, configurable up to 150 MB) | Admins can configure the limit up to 150 MB. |