How Can I Send Validation Emails with StartTLS (e.g. for Outlook, Office365)?


When sending validation emails through some email servers such as Hotmail,, or Microsoft 365 for business email accounts, the StartTLS setting is required. /
Information from Microsoft about sending email

You can set this in the settings of PDF-Mapper for sending emails in case of validation errors by adding the specification of &mail.smtp.starttls.enable=true to the email user (no spaces!).

A possible setting could then look as follows:

PDF-Mapper Settings (Application – Order or Invoice Validation)Specifications (replace {…} with your values).
Send message on validation erroryes
Connection to mail serverSMTP
Mail server
Mail server port587
Mail user{}&mail.smtp.starttls.enable=true
Mail user password{secret}
Employee name for notification{employee name}
Employee email for notification{}
Sender email address{}

More Information:

  • Contact Form: Link

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