The SMTPHandler class supports sending logging messages to an email
address via SMTP.
||mailhost, fromaddr, toaddrs, subject)|
Returns a new instance of the SMTPHandler class. The
instance is initialized with the from and to addresses and subject
line of the email. The toaddrs should be a list of strings. To specify a
non-standard SMTP port, use the (host, port) tuple format for the
mailhost argument. If you use a string, the standard SMTP port
Formats the record and sends it to the specified addressees.
If you want to specify a subject line which is record-dependent,
override this method.
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