mute the conversation with the Gmail keyboard shortcut "m"

The message is immediately removed from the Inbox view and all future messages (with similar subject line) will be archived automatically. You can search for muted messages using the search operator - is:muted And unless your email address is in the To: or CC: field, that email thread will never touch your Gmail inbox again. Muted unread mail, search using this query "label:^g is:unread"