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

Answer:

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

Server	smtp.office365.com / smtp-mail.outlook.com
Port	587
Encryption:	STARTTLS

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 error	yes
Connection to mail server	SMTP
Mail server host	smtp-mail.outlook.com
Mail server port	587
Mail user	{user@outlook.com}&mail.smtp.starttls.enable=true
Mail user password	{secret}
Employee name for notification	{employee name}
Employee email for notification	{employeename@mycompany.com}
Sender email address	{user@outlook.com}

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