Hello Ivana,
Unfortunately, there isn't a way to track emails once they have left Method. If you set up the default email prefences, the emails will go through your SMTP server. You will get undelivered and error email messages if there was a problem with an email to an account. Also, you may be able to track messages if you use an email service to send the emails out.
If you do send out a large amount of emails, consider using an email send service like SendGrid. Regular personal email accounts from Gmail and Yahoo are not meant to handle mass emails. They can have problems if you do have consistent large email campaigns. Plus, they don't have the options to handle mass email actions.
Greg