More info about imapsync here
Install imapsync
CentOS 7, Works on cPanel servers too
yum install epel-release && yum install imapsync
Once installed check and make sure it works.
imapsync --version
If it gives you the version number you should be good to go.
Move email account
imapsync --host1 mail.emaildomain.com --user1 username@emaildomain.com --password1 "password1" --host2 mail.exampledomain.com --user2 username@movetodomain.com --password2 "password2"
Example :
imapsync --host1 mail.myemail.com --user1 bob@myemail.com --password1 "password1" --host2 mail.incredigeek.com --user2 bob@incredigeek.com --password2 "password2"
Moving Multiple accounts
Best way to move multiple accounts is to use a script and and a list that contains all the usernames and passwords to the accounts you want to move.
example scripts can be found on the imapsync website here is a script example and here is the example file.txt
Example script.
#!/bin/sh
#
# $Id: sync_loop_unix.sh,v 1.6 2015/11/04 18:23:04 gilles Exp gilles $
# Example for imapsync massive migration on Unix systems.
# See also http://imapsync.lamiral.info/FAQ.d/FAQ.Massive.txt
#
# Data is supposed to be in file.txt in the following format:
# host001_1;user001_1;password001_1;host001_2;user001_2;password001_2;
# ...
# Separator is character semi-colon ";" it can be changed by any character changing IFS=';'
# in the while loop below.
# # Each line contains 6 columns, columns are parameter values for
# --host1 --user1 --password1 --host2 --user2 --password2
# and a trailing empty fake column to avaid CR LF part going
# in the 6th parameter password2. Don't forget the last semicolon.
#
# You can add extra options after the variable "$@"
# Use character backslash \ at the end of each suplementary line, except for the last one.
# You can also pass extra options via the parameters of this script since
# they will be in "$@"
# The credentials filename "file.txt" used for the loop can be renamed
# by changing "file.txt" below.
echo Looping on account credentials found in file.txt
echo
{ while IFS=';' read h1 u1 p1 h2 u2 p2 fake
do
{ echo "$h1" | egrep "^#" ; } > /dev/null && continue # this skip commented lines in file.txt
echo "==== Starting imapsync from host1 $h1 user1 $u1 to host2 $h2 user2 $u2 ===="
imapsync --host1 "$h1" --user1 "$u1" --password1 "$p1" \
--host2 "$h2" --user2 "$u2" --password2 "$p2" \
"$@"
echo "==== Ended imapsync from host1 $h1 user1 $u1 to host2 $h2 user2 $u2 ===="
echo
done
} < file.txt
Example list of accounts to
mail.maildomain.com;user1@incredigeek.com;password1;mail.incredigeek.com;user2@incredigeek.com;password2;
How to use,
You can run these command from a Linux computer
Download script
wget www.incredigeek.com/home/downloads/imapsync/imapsync_loop.sh
Make the script executable
chmod +x imapsync_loop.sh
Create a text file named “imapsync_list.txt”
This file will contain the mail server to transfer from, username, and password, and then the mail server to transfer to, username and password. Add one line per account.
Example:
mail.servertotransferfrom.com;Username1;Password1;mail.servertomoveto.com;Username2;Password2; mail.servertotransferfrom.com;testuser;123456;mail.servertomoveto.com;bob;123456;
Execute the script to start moving mail
./imapsync_loop.sh
Troubleshooting
In the username you may need to use the username@domainname.tld, so if the username is bob, and the mail domain is incredigeek.com, use bob@incredigeek.com for the username in the imapsync_list.txt.