If you want to see whether your emails are being delivered to a user, all you need to do is click on People, then Users and find the user that you want to check.
Next, click on Email Activity.
In the page that pops up, take a look at the Status column. There are several different options that might show up.
Delivered: The email has been successfully sent by the platform and has reached the recipient.
Processed: The email has been queued by the platform and is just about to be sent.
Bounce: The email has failed to reach the recipient. The platform will then queue the email again and try to resend it.
Drop: After a certain amount of bounces have occurred, the platform will stop attempting to reach the user.
In the Reason column, you will see a reason as to why the emails have failed, such as Invalid, meaning an invalid email has been entered as the user's contact email.
You can use this feature as many times as you'd like, on whoever you'd like. The only requirements are that the user has an email entered and that 15 seconds must elapse between refreshes of the page.
Please note that only email activity for the past 7 days will show up here.