Gets or sets the options which can be used to disable certain extended SMTP capabilities.
An ExtendedSmtpOptions value containing bitwise combination of flags which disable certain extended SMTP capabilities. The default value is Default (unless SafeMode is true).
If this property value is set to ClassicSmtpMode, no ESMTP extensions will be used (including PIPELINING and AUTH).
If SafeMode was true to the moment of creating this SmtpServer object, SmtpOptions will be set to 7.
SmtpServer Class | MailBee.SmtpMail Namespace