If emails sent via RPostONE are not appearing in the Sent Items folder, the issue is likely related to write access permissions granted to RMail within the Exchange server rather than a local Outlook problem.
When an encrypted email is sent via RPostONE, the plug-in temporarily modifies the message to apply encryption. A backup copy should then be restored automatically in the Sent Items folder. However, due to permissions or policy restrictions, the RPostONE for Outlook plug-in may not be able to properly save these messages.
Solution Steps
Step 1: Disable Local Encryption
1. Open Outlook and navigate to: File → RPostONE Settings → Advanced
2. Locate the option labeled Local Encryption and disable it.
3. Restart Outlook and test sending an encrypted email again.
Disabling Local Encryption ensures that encryption occurs on the RPost server rather than on the sender’s machine. This allows Outlook to properly recognize and store the email in the Sent Items folder.
If emails are still missing from Sent Items after completing Step 1, follow these steps:
1. Open Outlook and go to: File → RMail Settings → Advanced
2. Locate the option labeled Simple MAPI and disable it.
3. Restart Outlook and test again.
Simple MAPI bypasses Outlook’s native sending process, which may interfere with logging sent emails in some configurations.
Step 3: Disable Sent Items Option (If Needed)
If the issue persists, try disabling the Sent Items modification feature:
1. Open Outlook and navigate to: File → RMail Settings → Advanced
2. Locate the option labeled Sent Items and uncheck it.
3. Restart Outlook and test again.
This feature removes the .rpost.biz extension from recipient email addresses in the Sent Items folder for better appearance. However, some system configurations, email filtering tools, or security add-ons may block or delete messages modified post-send. Disabling this option prevents such interference.
Note: With this option disabled, the .rpost.biz extension will remain visible in Sent Items. While this may be less visually appealing, it ensures proper message retention.