Annoyed voters have hit out at mining magnate Clive Palmer over a series of unsolicited text messages that appear to have driven tens of thousands of visits to his party website on Friday.

The former politician, who is staging a Canberra comeback at the next federal election, sparked outrage when he sent out unsolicited election "spam" to an unknown number of voters.

Clive Palmer spammed an unknown number of Australians on Friday.

Social media ignited with complaints on Friday afternoon, with many left confused about how the controversial businessman found their phone number.

The texts spruik a range of policy areas from "affordable reliable power" in South Australia, fast trains to the CBD in NSW and Victoria and a "zonal taxation policy" for lower taxes for regional Australia in north Queensland.