Reducing spam email through identification of source

A computer program product comprising a computer usable medium embodying computer usable program code for detecting undesirable email, comprising:

• computer usable program code for receiving an email including text;
• identifying at least one natural language grammar mistake in the text;
• calculating a country of origin of an author of the text based on the at least one natural language grammar mistake;
• calculating a first value based on the country of origin of the author of the text;
• correcting the at least one natural language grammar mistake in the text;
• and
• determining whether the email is undesirable based on the text that was corrected and the first value.

A method for detecting undesirable email, comprising:

• receiving an email including text;
• detecting at least one natural language grammar mistake in the text;
• comparing the at least one natural language mistake to a first list that associates natural language mistakes to a country of origin;
• calculating a country of origin of an author of the text based on the first list;
• comparing the country of origin of the author of the text to a second list that associates countries of origin with a value;
• calculating a first value based on the second list;
• correcting the at least one natural language grammar mistake in the text;
• and
• determining whether the email is undesirable based on the text that was corrected and the first value.