Gets whether the collection may not be modified.
true if the collection may not be modified and any attempt to call a method which modifies the collection will raise MailBeeInvalidStateException exception; otherwise, false.
JobsRunning is a collection which may not be modified by the application. MailBee maintains this collection itself, the application is only allowed to monitor it (for instance, to keep track of the jobs currently being processed).
SendMailJobCollection Class | MailBee.SmtpMail Namespace