I can't find my sent mails

Question

I can't find my sent mails, especially for mails that has been sent 2 months ago.

This is a very serious problem that needed to be solved immediately.

Answer 1

注意：此回應已自動翻譯。因此，可能會包含文法錯誤或表達不流暢。

請注意，這裡是英文（en‑US）論壇。我誠摯建議您以英文發文，這樣會有更多社群成員能更有效地協助您。若您希望使用繁體中文，也歡迎您改在此論壇發文。非常感謝您的理解與配合。

您好 Li, Steven

為了能更好地協助您，想請您補充以下資訊：

1. 受影響的是哪一種類型的帳戶：商務帳戶（Microsoft 365 / Exchange）、個人帳戶（Outlook.com），還是 IMAP/POP 帳戶？
2. 當您透過網頁版郵件（Outlook on the web）登入後，若依日期瀏覽，「寄件備份／已寄出郵件（Sent Items）」資料夾中是否能看到這些已寄出的郵件？
3. 您是否已檢查郵件是否因封存／保留政策而被移動或刪除？請特別確認：線上封存信箱（若有）以及「已刪除郵件（Deleted Items）」資料夾。

期待您的回覆。

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Answer 2

Use the Sent Items folder and then check the common causes for missing sent mail.

1. In Outlook, in the folder list, select Sent Items under the account used to send the messages. If there are multiple accounts, each has its own Sent Items folder.
2. If Sent Items is not visible, select the arrow (>) next to the account name to expand all folders and then select Sent Items.
3. Use the search box in Sent Items to look for the messages from two months ago. Try searching by:
   • Keywords in the subject or body
   • Recipient name using To:recipient name
   • Subject text using Subject:keyword

If the messages still do not appear, check the following:

1. Verify Outlook is saving sent messages
   1. Go to File > Options > Mail.
   2. Scroll to Save messages.
   3. Ensure Save copies of messages in Sent Items folder is checked. If it was unchecked, new messages were not being stored in Sent Items.
2. Check if the messages are too old for the current sync window (Cached Exchange Mode or IMAP)
   1. Go to File > Account Settings > Account Settings.
   2. Select the account and choose Change.
   3. Adjust the Mail to keep offline slider to a longer period (for example, 6 months or more).
   4. Allow Outlook time to resync, then recheck Sent Items and search again.
3. Check Deleted/Trash folders
   • Open Deleted Items (or Trash for some accounts) and search for the same messages. They may have been deleted or moved.
4. Confirm the messages were actually sent
   • Check the Outbox folder. If messages are stuck there, they were never sent. Ensure the connection is working, then send them again.

If none of these steps surface the missing items, the messages may have been permanently deleted or never stored in Sent Items due to previous settings.

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References:

• View sent email