5.0 64-bit address book attachments pane missing backup BCC beep bugs certificate copy paste error corrupted dispatcher display drag eml files Feature Request Filters Folder font size GMAIL GnuPG Google Contacts hangs horizontal view IMAP imap install lotus notes macros Message Threading Messages migration OpenPGP Opera import pgp decryption POP3 recover reply SEARCH setup shortcuts SMTP ssl certificate sync contact address book outlook.com icloud gmail.com imap import export Tabs Templates toolbar configuration order upgrade utf8 variable