archive-gmail

#!/bin/bash

# Script to archive a gmail mailbox, saving the emails so we can delete
# accounts

USERNAME=$1
DOMAIN="EXAMPLE.COM"
MAILSERVER="imap.gmail.com"
FOLDER="[Gmail]/All Mail"

if [ -z "$1" ]; then
cat << EOF
 USAGE:
    $0 USERNAME [FOLDER]

Archive a Small World Social gmail account to .mbox.zip format, for storing in
backup before deleting a user account.  The username arg is the pre-"@" part of
the full email address.

The FOLDER will default to "$FOLDER" which is the current default Gmail
hold-all folder. A different folder can be specified, but make sure you enquote
it if there are spaces in the name.

 WARNING: Large mail accounts can take quite some time to download
          as it's done one email at a time.

EOF
exit 0
fi

if [ -n "$2" ]; then
	FOLDER="$2"
fi


command -v fetchmail >/dev/null 2>&1 || { echo >&2 "Fetchmail is required to run this script, please install it.  Aborting."; exit 1; }
command -v formail >/dev/null 2>&1 || { echo >&2 "Formail is required to run this script, it's in the procmail package, please install it.  Aborting."; exit 1; }
command -v zip >/dev/null 2>&1 || { echo >&2 "Zip is required to run this script, please install it.  Aborting."; exit 1; }

if [ -s $USERNAME.mbox ]; then
	echo "Existing $USERNAME.mbox file found, perhaps left over from previous attempt?"
	echo "Pulling mail will append to existing file, which will double up mail."
	echo "Please [re]move existing file and try again."
	echo "Aborting..."
	exit 1
fi

echo "Fetching $FOLDER for ${USERNAME}@$DOMAIN from $MAILSERVER..."
fetchmail -a -k -u ${USERNAME}@$DOMAIN -p IMAP -P 993 -r "${FOLDER}" --ssl -m "formail -c >> ./${USERNAME}.mbox"  $MAILSERVER
if [ $? != 0 ]; then
	echo "Fetchmail encountered an error, aborting archive script..."
	exit 1
fi

echo "Zipping $USERNAME.mbox, please provide zip password..."
zip -e $USERNAME.mbox.zip $USERNAME.mbox
if [ -s $USERNAME.mbox.zip ]; then
	echo "Compression finished, please send $USERNAME.mbox.zip to backup location."
	echo "Consider removing $USERNAME.mbox after zip backup - it may be quite large."
	echo "Finished."
else
	echo "Something went wrong - mbox.zip not found or of zero size. Check it out."
fi