How can i check wheather my mail has been seen

Unfortunately, there's no foolproof way to know for certain whether your email has been seen by the recipient. However, here are some indirect methods to help you gauge whether your email has been opened or viewed:

1. Read Receipt: Some email providers, like Gmail, allow you to request a read receipt. This will send a notification to your email when the recipient opens the email. To enable read receipts in Gmail, go to Settings > General > Reading settings > Request read receipts.
2. Tracking Pixels: Some email marketing tools and services, like Mailchimp or Constant Contact, offer tracking pixels that can be added to your email campaigns. These pixels track when the email is opened and provide insights into engagement metrics.
3. Email Client Analytics: If you're using a web-based email client like Gmail or Outlook, you can check the analytics provided by the client. For example, in Gmail, you can see the "Open" and "Click" metrics for each email in the "Analytics" tab.
4. BCC (Blind Carbon Copy): If you're concerned about the recipient seeing that you've sent them an email, you can use the BCC feature. This will send the email to the recipient without revealing your email address.
5. Check the Recipient's Response: If you've sent an email and haven't received a response, it's possible that the recipient hasn't seen it. You can try sending a follow-up email or calling them to check if they received your initial email.
6. Use a Third-Party Email Tracking Tool: There are various third-party email tracking tools available, such as Yesware, Streak, or Boomerang, that can help you track when your emails are opened and provide insights into engagement metrics.

Keep in mind that these methods are not foolproof, and there's always a chance that the recipient may not open or view your email even if you use these methods.