Zimbra - Delete a message by subject from all email accounts in a file

rm_message.sh

#!/bin/bash
# rm_message.sh user@domain.com subject
# create temp_file prior to calling this zmprov -l gaa | grep domain.com > /tmp/temp_email

if [ -z "$2" ]; then
echo "usage:  rm_message.sh user@domain.com <subject>"
exit 0
else
addr=$1
subject=$2
for acct in `cat /tmp/temp_email` ; do
    echo "Searching $acct  for Subject:  $subject"
    for msg in `/opt/zimbra/bin/zmmailbox -z -m "$acct" s -l 999 -t message "from:$addr subject:$subject"|awk '{ if (NR!=1) {print}}' | grep -v -e Id -e "----" -e "^$" | awk '{ print $2 }'`
      do
    echo "Removing "$msg" from "$acct""
    /opt/zimbra/bin/zmmailbox -z -m $acct dm $msg
    done
done
fi

From Zimbra doc, you can use Zimbra command to filter messages:
zmmailbox -z -m user@domain.com s -t message -l 50 "in:inbox date:01/01/2015"

Ref: https://wiki.zimbra.com/wiki/Deleting_messages_from_account_using_the_CLI