poll pop.gmx.net
with proto POP3
user "user@pop-server"
there with password "secretpassword"
mda "/usr/bin/msmtp -- someuser@icloud.com"
options
no keep
ssl
sslcertck
sslcertpath /etc/ssl/certs
set daemon 300

account default
host mx6.mail.icloud.com
port 25
auto_from off
from "user@localdomain"
tls on
tls_starttls on
tls_trust_file /etc/ssl/certs/ca-certificates.crt
logfile ~/.msmtp.log
domain mx.of.localdomain

set daemon 300
poll pop.remote.tld tracepolls proto pop3 uidl auth password port 110 timeout 60
    user "your_username" keep pass "youpassword" smtpname your_other_account@other.tld