$ apt-get -t unstable install fetchyahoo
The following packages will be upgraded:
  fetchyahoo
Need to get 39.1kB of archives.
After unpacking 8192B of additional disk space will be used.
Get:1 http://debian.yorku.ca unstable/main fetchyahoo 2.10.2-1 [39.1kB]

$ apt-cache policy fetchyahoo
fetchyahoo:
  Installed: 2.10.2-1
  Candidate: 2.10.2-1
  Version Table:
 *** 2.10.2-1 0
         40 http://debian.yorku.ca unstable/main Packages
        100 /var/lib/dpkg/status
     2.8.6-5 0
        900 http://debian.yorku.ca sarge/main Packages

$ apt-cache policy gotmail
gotmail:
  Installed: 0.8.2-3
  Candidate: 0.8.2-3
  Version Table:
     0.8.9-1 0
         40 http://debian.yorku.ca unstable/main Packages
 *** 0.8.2-3 0
        900 http://debian.yorku.ca sarge/main Packages
        100 /var/lib/dpkg/status

apt-get -t unstable install gotmail

$ apt-cache policy gotmail
gotmail:
  Installed: 0.8.9-1
  Candidate: 0.8.9-1
  Version Table:
 *** 0.8.9-1 0
         40 http://debian.yorku.ca unstable/main Packages
        100 /var/lib/dpkg/status
     0.8.2-3 0
        900 http://debian.yorku.ca sarge/main Packages