Minor Description
Currently the EmailService requires two configuration parameters:
isis.service.email.sender.address
isis.service.email.sender.password
with three optional:
isis.service.email.sender.hostname
isis.service.email.port
isis.service.email.tls.enabled
Another optional one is needed:
isis.service.email.sender.username
Currently when logging on to an email server the isis.service.email.sender.address value is used as an account username, in addition to also being used as the 'sent-by' email address, if you don't have a choice as to the username this is problematic, such as with Amazon Simple Email Service (SES).
With the additional config parameter, when present this value should override the isis.service.email.sender.address value as the account username, when not present the present arrangement should be used.