In the top right corner of the Spam Reports page in the Twilio SendGrid App, you will see a calendar icon. It will be set to "All Time" by default. Click this calendar icon and choose the spam report dates you would like to search between. Your recipient list will refresh, showing the recipients who marked your email as spam between these dates.
When you select the checkboxes next to the recipient names or select all, using the checkbox next to the search box, you will see a new button at the top of the page. From this list, you can choose to remove the selected recipients from the list.
You can download your Global Unsubscribe list as a CSV by clicking the gear icon at the top of the page and selecting “Download CSV.” The file will download in your browser right away.