Email read receipt not available in Yahoo Mail
If you send an email from Yahoo Mail and don't receive a failed delivery message, the email was delivered to your intended recipient's email system. But it doesn't guarantee the email was opened and/or read.
Yahoo Mail does not provide a "read/return receipt" feature. To confirm that your recipient has received and/or read an important message, we suggest asking them to confirm receipt by sending you a reply.
If you're receiving "read/return receipts" in your Yahoo Mail account, they may be originating from:
- A mobile device
- An external email client
- The recipient's Internet Service Provider (ISP)