These tell you that you have won a prize in a lottery you haven't entered.
But you have to pay money to the operators before they will release the money.
Because it was born out of hacking techniques, “fishing” is stylistically spelled "phishing" by hackers.
"The story was getting more and more bizarre," she says.
These offer opportunities to earn thousands of dollars a week, but your earnings may be dependent on selling the scheme to others.
This long-running scam offers you a percentage of millions of dollars in exchange for an up-front fee and letting the sender use your bank account to transfer the funds from where they are currently held.
The Nigerian letter has many variations, and despite its name can come from anywhere in the world.
For more information see the Ministry of Consumer Affairs money transfer scams web page.