git clone https://github.com/imapsync/imapsync.git

sudo apt-get install  \
libauthen-ntlm-perl     \
libclass-load-perl      \
libcrypt-openssl-rsa-perl \
libcrypt-ssleay-perl    \
libdata-uniqid-perl     \
libdigest-hmac-perl     \
libdist-checkconflicts-perl \
libencode-imaputf7-perl     \
libfile-copy-recursive-perl \
libfile-tail-perl       \
libio-compress-perl     \
libio-socket-inet6-perl \
libio-socket-ssl-perl   \
libio-tee-perl          \
libjson-webtoken-perl   \
libmail-imapclient-perl \
libmodule-scandeps-perl \
libnet-dbus-perl        \
libnet-ssleay-perl      \
libpar-packer-perl      \
libproc-processtable-perl \
libreadonly-perl        \
libregexp-common-perl   \
libsys-meminfo-perl     \
libterm-readkey-perl    \
libtest-fatal-perl      \
libtest-mock-guard-perl \
libtest-mockobject-perl \
libtest-pod-perl        \
libtest-requires-perl   \
libtest-simple-perl     \
libunicode-string-perl  \
liburi-perl             \
libtest-nowarnings-perl \
libtest-deep-perl       \
libcgi-pm-perl          \
libtest-warn-perl       \
make                    \
time                    \
cpanminus

make install

imapsync --host1 mail.example.com --user1 user@example.com --password1 SECRET1 --host2 mail.contoso.com --user2 CONTOSO\\user2 --password2 SECRET2  --syncinternaldates --ssl1 --ssl2 --keepalive1 --keepalive2