aptitude search dovecot | grep -P '^i'
i A dovecot-core - secure POP3/IMAP server - core files
i dovecot-imapd - secure POP3/IMAP server - IMAP daemon
i dovecot-lmtpd - secure POP3/IMAP server - LMTP server
i dovecot-lucene - secure POP3/IMAP server - Lucene support
i dovecot-managesieved - secure POP3/IMAP server - ManageSieve serv
i dovecot-sieve - secure POP3/IMAP server - Sieve filters su
i dovecot-sqlite - secure POP3/IMAP server - SQLite support
aptitude search dovecot | grep -P '^i' managesieved - secure POP3/IMAP server - ManageSieve serv
i A dovecot-core - secure POP3/IMAP server - core files
i dovecot-imapd - secure POP3/IMAP server - IMAP daemon
i dovecot-lmtpd - secure POP3/IMAP server - LMTP server
i dovecot-lucene - secure POP3/IMAP server - Lucene support
i dovecot-
i dovecot-sieve - secure POP3/IMAP server - Sieve filters su
i dovecot-sqlite - secure POP3/IMAP server - SQLite support