....it may, or may not, be a good thing to "unsubscribe". Frequently, the "unsubscribe" button simply notifies the sender of the SPAM that there is a live person at the end of the email address they've sent something to. It usually means more spam from the sender.
Here, I simply delete them or if all are from a specific locations, I block the sender's address.
Hope this helps.
Three mornings ago I awakened to find over 1,500 unsolicited newsletters had come in to my yahoo email inbox. I've gotten 100-200 per day since then, with over 2,000 total so far. It is my email address in the "To:" line. Fortunately about half require I confirm my request to subscribe, so those will go away on their own, but I'm now starting to gradually "unsubscribe" from the others. Has this happened to anyone else? Any ideas how or why it happened? The only thing I did differently in the day before this started was to install ios9 on my ipad. The newsletter deluge started about 10-12 hours later. Is there any way to prevent this in the future? Thank you for any ideas and help.