I using this plugin for sending email notification for developer,
I have configured this plugin with pipeline script.
By configuring email account with Gmail SMTP mail get passed and sent to receipten.
But we are not able to sent email from our official email account.
For your clarity.
we are using Yahoo small business account for our official domain.
Configuration used for Official email account.
SMTP Server : smtp.bizmail.yahoo.com
SMTP Port : 465
Use SSL : enabled
Username : email@example.com
Password : XXXXXXXX
I have also generated password for third party application to use in yahoo mail server with less secure option too.
emailext attachLog: true, body: 'Help', compressLog: true, mimeType: 'text/html', subject: 'Testing', to: 'firstname.lastname@example.org'