i use Helm's built in billing function and set Helm to send out billing reminder in 10 days, 5 days setting. No one else have problem expect one guy who think it's not right to pay 10 days before due date. i told him it just a reminder, he can pay 10 days before or on due date.
do you send out payment reminder? when do you send out?
We don't use Helm's billing software, but if we did I'd be sending out a reminder at the same intervals, along with nasty "you're past due" mails at the same intervals after the due date.
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