5.0 address book antivirus avg 2013 plugin backup beep bugs cite client color customization display domino drag Exchange Server export Favorite Feature Request Filters Folder get mail GMAIL GMail GnuPG hangs IMAP imap Import Thunderbird IMAP junk macros Messages moving OpenPGP Opera import pgp decryption reappearing RegEx reply rss SEARCH send Shortcut colour groups SMTP spell check modify switch change eliminate splash Templates thread upgrade utf8 Windows Mail