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  2. Greylisting (email) - Wikipedia

    en.wikipedia.org/wiki/Greylisting_(email)

    Greylisting is a method of defending e-mail users against spam. A mail transfer agent (MTA) using greylisting will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate, the originating server will try again after a delay, and if sufficient time has elapsed, the email will be accepted.

  3. Suppression list - Wikipedia

    en.wikipedia.org/wiki/Suppression_list

    A suppression list is a list of suppressed e-mail addresses used by e-mail senders to comply with the CAN-SPAM Act of 2003 (United States of America). [1] CAN-SPAM requires that senders of commercial emails provide a functioning opt-out mechanism by which email recipients can unsubscribe their email address from future email messages. [1]

  4. Block and unblock email addresses in AOL Mail

    help.aol.com/articles/block-and-unblock-email...

    Block email addresses. 1. Open an email or select it from your mailbox. 2. Click the More icon. 2. Click Block Senders. 2. Optionally, select to also delete emails you've received from the sender.

  5. Whitelist - Wikipedia

    en.wikipedia.org/wiki/Whitelist

    A whitelist or allowlist is a list or register of entities that are being provided a particular privilege, service, mobility, access or recognition. Entities on the list will be accepted, approved and/or recognized. Whitelisting is the reverse of blacklisting, the practice of identifying entities that are denied, unrecognized, or ostracized.

  6. Manage spam and privacy in AOL Mail

    help.aol.com/articles/aol-mail-spam-and-privacy

    Select the email. Click Spam. If you're given the option, click Unsubscribe and you will no longer receive messages from the mailing list. If you click the "Mark as Spam" icon, the message will be marked as spam and moved into the spam folder.

  7. Block all senders except for Contacts - AOL Help

    help.aol.com/articles/block-all-senders-except...

    Avoid the frustration of unwanted emails by enabling the option to only receive messages from senders who are in your contact list. If you're expecting messages from a specific sender, be sure to add their email address to Contacts. 1. Click Settings | More Settings. 2. Click Security and privacy tab. 3. Toggle on Block all senders except ...

  8. Domain Name System blocklist - Wikipedia

    en.wikipedia.org/wiki/Domain_Name_System_blocklist

    A Domain Name System blocklist, Domain Name System-based blackhole list, Domain Name System blacklist (DNSBL) or real-time blackhole list (RBL) is a service for operation of mail servers to perform a check via a Domain Name System (DNS) query whether a sending host's IP address is blacklisted for email spam. [1]

  9. Manage spam in AOL Mail

    help.aol.com/articles/manage-spam-in-aol-mail

    Open the Spam folder. Select the email. Click Restore to Inbox or Not Spam; Click Ok on the top toolbar to move the message into your inbox. Future messages from this sender will be delivered to the inbox.