In the iOS email app, when I mark a message as junk, do I have to keep it in the junk folder for mail from that sender to be permanently marked as junk in the future? Because I have been deleting the emails in my Junk folder and emails from those senders still come to my Inbox, not the Junk folder like they should. Am I doing it wrong or does Apple’s Junk filter just suck?
iPhone 7 Plus, iOS 12
That depends on how your email provider handles spam. Apple has no junk filter at all; as with most mail clients on most devices, spam is managed on the mail server, not the device. When you move a message to junk (assuming you have an IMAP account) it is also moved to junk on the server. If your email provider manages spam correctly it should note mail that you consider junk. It's best to leave it in the junk folder for a while to get the message across to the email provider's automated system.
Note also that junk mail usually is missing verification data in the message header. This is used by the email provider to recognize UCE*. Because you think a message is junk it does not mean the email provider agrees with you. Valid email that you just don't want to receive does not meet the definition of junk. For that kind of email you should unsubscribe rather than mark it as junk.
*Unsolicited Commercial Email - the "legal" definition of spam or junk
That depends on how your email provider handles spam. Apple has no junk filter at all; as with most mail clients on most devices, spam is managed on the mail server, not the device. When you move a message to junk (assuming you have an IMAP account) it is also moved to junk on the server. If your email provider manages spam correctly it should note mail that you consider junk. It's best to leave it in the junk folder for a while to get the message across to the email provider's automated system.
Note also that junk mail usually is missing verification data in the message header. This is used by the email provider to recognize UCE*. Because you think a message is junk it does not mean the email provider agrees with you. Valid email that you just don't want to receive does not meet the definition of junk. For that kind of email you should unsubscribe rather than mark it as junk.
*Unsolicited Commercial Email - the "legal" definition of spam or junk
When you say unsubscribe, are you talking about clicking the link that’s usually at the bottom of the spam (but valid) email that says “to unsubscribe, click here”? And is that the same as the little notification at the top of some emails that says “This message is from a mailing list” and has an “unsubscribe” link? Thanks!
Messages marked as junk still coming into Inbox instead of Junk folder
