Even if the email is in their 'Sent items' folder, the email may not have left their email system successfully. If you think the email may be stuck in the sender’s outbox, ensure they have considered these potential issues:
- The attachment (if applicable) is too big to send
- The email was sent while they were offline
- The sender’s cache is causing issues due to expired or corrupted files. Check out these support articles for
Gmail and
Outlook.
- Their email is not fully updated; they may need to update to the latest version of their email app.