When testing new features, using non-existing emails, Mailpoet suspends the account when too many invalid emails are registered. This is painful for developers. Proposal: in Mailpoet's algorithm, INGORE all emails that include "test" before and after the @-symbol. Example: test123@test.com or big-test@test.com etc. This would allow developers to continue testing new features without getting the account suspended. Thanks for the consideration.