You can limit spam by unsubscribing. It can be done by manually unsubscribing the type of mail that is not required. It will not then publish that mail again.

No, hes completely idiotic and talentless. That's why everyone is unsubscribing him on YouTube.

You can stop deals type of mails on Gmail. It can be done by unsubscribing them. After that, the mails do not appear.

Disabling spam can be done by unsubscribing mails. You can unsubscribe a mail and it will not appear. The more you unsubscribe, the less spam you get.

If you have created any account in online matrimony site, then you can login to your account and click unsubscribe option or send a mail to admin about unsubscribing your profile from the matrimonial directory.