- 'custnum' => $cust_main->custnum,
- 'msgnum' => $self->msgnum,
- 'from' => $from_addr,
- 'to' => \@to,
- 'bcc' => $self->bcc_addr || undef,
+ 'custnum' => ( $cust_main ? $cust_main->custnum : ''),
+ 'msgnum' => $self->msgnum,
+ 'from' => $from_addr,
+ 'to' => \@to,
+ 'bcc' => $self->bcc_addr || undef,