13. A computer-implemented method of identifying text content in images, the method comprising: extracting an image from an email; and searching the image for presence of a search term by splitting the image into a plurality of character blocks, each character block in the plurality of character blocks containing pixel information that may represent a character, calculating a probability that a character block in the plurality of character blocks includes a character, forming a candidate sequence of character blocks from the plurality of character blocks to form a candidate match for the search term, and comparing the candidate sequence of character blocks to the search term to determine if the search term is present in the candidate sequence of character blocks.
13. A computer-implemented method of identifying text content in images, the method comprising: extracting an image from an email; and searching the image for presence of a search term by splitting the image into a plurality of character blocks, each character block in the plurality of character blocks containing pixel information that may represent a character, calculating a probability that a character block in the plurality of character blocks includes a character, forming a candidate sequence of character blocks from the plurality of character blocks to form a candidate match for the search term, and comparing the candidate sequence of character blocks to the search term to determine if the search term is present in the candidate sequence of character blocks. 15. The method of claim 13 wherein the search term comprises a word or phrase indicative of spam.