How to check wheather mail has reached to phone

There are a few ways to check if an email has been delivered to your phone:

Check your email client: Open your email client (e.g., Gmail, Outlook, Yahoo Mail) on your phone and check if the email has been delivered to your inbox.
Check your phone's notification settings: Go to your phone's settings > Notifications > Email, and check if the email has been delivered and is showing up as a notification.
Check your phone's email app: If you have a dedicated email app on your phone (e.g., Gmail app, Outlook app), check if the email has been delivered to your inbox within the app.
Check your phone's messaging app: If you have a messaging app like SMS or MMS, check if the email has been delivered as a text message.
Check your email provider's website: Log in to your email provider's website (e.g., Gmail.com, Outlook.com) on your phone's web browser and check if the email has been delivered to your inbox.
Check your phone's delivery reports: Some email providers, like Gmail, offer delivery reports that show when an email was delivered to your phone. You can check these reports by going to your email provider's website and looking for the "Delivery reports" or "Delivery history" section.

If you're still having trouble checking if an email has been delivered to your phone, you can try the following:

Check your phone's network settings to ensure that your phone is connected to the internet and that your email provider's servers are accessible.
Check your email client's settings to ensure that it's configured correctly and that you're receiving emails.
Try sending a test email to yourself to see if it's delivered successfully.
Contact your email provider's customer support for assistance if you're still having trouble.