The number of email spam tests provided by the subscription plans mean the number of credits you receive per month/year for email tests. One test includes sending the message to the GlockApps seed list and getting the report about the email placement and spam score will the spam filters and mailbox providers chosen by the user.
Automatic tests and tests via proxy addresses count against the total number of tests per month or year. Every time an automatic test works and/or every time you send the message to the proxy address, one credit is deducted from your account.
Unused credits in subscription plans don’t roll over the next month.