The drush script which provides comman line acceess to drupal functionality emits an error message when run as a cron job
tput: No value for $TERM and no -T specified
If it is not exported determine and export the number of columns.
if [ -z $COLUMNS ]; then export COLUMNS=$(tput cols) fi
I presume drush uses this information to calculate layout of output.
However when running as a cron job COLUMNS is not set and tput gives the above error.
To resolve this specify a COLUMNS value in your cron job, setting an appropriate size for viewing in email
cron now runs the following for me.
COLUMNS=80 /home/me/bin/drush cron