According to the SFMC knowledge base, the main difference between Transactional and Commercial emails in SFMC: " For commercial messages, we check for the presence of an unsubscribe link. [...] For transactional messages, we do not check for the presence of an unsubscribe." Which Unsubscribe link is checked by SFMC for defining a Transactional/Commercial email ? Is it the "standard" Unsubscribe link from SFMC : %%unsub_center_url%% ?
If we use a custom Cloud Page as Unsubscribe page/link, can you confirm that SFMC won't be able to check if the message is OK with Transactional or Commercial rules ? If yes, in that case, is the Transactional/Commercial classification finally irrelevant and useless?