sudo apt-get install msmtp-mta

/etc/msmtprc

# Use TLS.
tls on
tls_trust_file /etc/ssl/certs/ca-certificates.crt

# Syslog logging with facility LOG_MAIL instead of the default LOG_USER.
syslog LOG_MAIL

aliases		/etc/aliases



account 	gmail1
auth 		plain
host 		smtp.gmail.com
port		587
user		tools@gmail.com
password	123456
from		tools@gmail.com

account 	gmail2
auth  		plain
host 		smtp.gmail.com
port		587
user		backups@gmail.com
password	123456
from		backups@gmail.com


account default : gmail1

Aliases file format:

short_name: full_remote_address

/etc/aliases

mailer-daemon: user@domain.org
postmaster: user@domain.org
nobody: user@domain.org
hostmaster: user@domain.org
webmaster: user@domain.org
www: user@domain.org
ftp: user@domain.org
abuse: user@domain.org
noc: user@domain.org
security: user@domain.org

backuppc: user@domain.org
postgres: user@domain.org
www-data: user@domain.org

root: user@domain.org

jenkins:	user@domain.org
user:           user@domain.org

# The default is the default email to which an email will be sent if no match for a user is found.
default: user@domain.org