How many bulk emails can I send?

HypeAuditor doesn't limit you with the amount of bulk emails you can send. However, limits are applied by Google.

Thus, if you are using Gmail, your account is subject to Google's sending limits. Google lets you send emails to a maximum of 500 recipients per day through Gmail. If you are a Google Apps for Work user, your daily limit is 10,000 email recipients per day. These limits are set by Google and HypeAuditor is unable to affect them. According to Google's FAQ you may receive "You have reached a limit for sending mail" email if you exceed the limit. When you get this error, you should be able to send emails again within 1 to 24 hours.