I have been using Thunderbird for years. My internet provider, Verizon FOIS no longer supports email so I had to move over to AOL. I was able to keep my verizon.net email address. But I recently received an email from AOL to update my security settings. It stated: "We hope you are enjoying your improved email experience since switching to AOL. We are committed to protecting the privacy and security of our customers so we're writing to inform you that your current third party email application is not using the latest, secure mail connection settings. In order to continue sending and receiving your verizon.net mail via your third party email application, you must update your connection settings by November 7, 2017. Please visit our help site for instructions on how to update your settings." Well I did that and now I have two separate inboxes on my Thunderbird. I want to get rid of one of them but do not want to lose all the old/saved emails. Please help!