Do you take the time to think of the consequences before you click "Send?"

The email below was sent to me by one of my clients who thought I would appreciate the message since I had worked with the same writer a number of years ago. She did something very similar to me. I wonder if the problem is the customers or the supplier?

Joan,

I can prove I sent the invoice to Max as the email to which it was
attached is still in my sent file; so obviously he failed to forward it to
you or you failed to process it.

I did my job, which was conducting the interviews and writing the articles
from which your company is now benefiting.

And as for your "strict policy" of writing checks only twice a month:
Given the circumstances, it is morally indefensible, and your obvious lack
of concern-let alone shame-at having once again failed to keep your word
is repulsive.

From now on, I will copy you on the invoices I send to Max. I will expect
acknowledgement of receipt and payment as agreed with the check cut no
later than 45 days after the publication of the issue for which the work
was billed.

This means you will need to send me only two more checks: One for
$1200.00 for the December articles and one for $600.00.

I have already left a voicemail for Max telling him I will never write
another article for you again.

Please do not think for a moment that my quitting means you can forget
about paying these two invoices.

Joanne

Do you think she will get the opportunity to send them any more invoices?.
Do you think this message accomplished what she wanted?
How fast would you be paying these invoices now?
What kind of a reference would you give?

P.S. Names changed to protect everyone.