When an encrypted item (be it one or many) is larger than 2MB, the user will receive a message stating that the item is too large to be decrypted and as a result will not be uploaded to SharePoint. The 2MB size is the default size (specified in bytes) and is configurable.
Note:
This key can only be applied if the Decryption of Encrypted Emails feature has been enabled.
Encrypted Item Size Limit
| Applies to: |
7.1 Update 4+ Email Manager for Outlook |
| MSI Property Name | DECRYPTION_FEATURE_SIZE_LIMIT |
| Registry Root Key Priority | HKEY_CURRENT_USER |
| Registry Key Location | ...\Contributor\EmailManager\ |
| String Value Name | DecryptionFeatureSizeLimit |
| Possible Value Data | 0 - * |
| Default Value | 2097152 |
For details on applying a configuration setting, please refer to the article How to apply a Configuration Setting.