Is Keyword Checking case sensitive? Author: Luis Fernandes July 11, 2020 13:14 AnswerThe Keyword Checking in GFI MailEssentials is not case sensitive. An email will be blocked by Spam Keyword Checking whether a matching word is spelled in upper case or lower case. Example:"keyword" will match "KEYWORD" and "KeyWord" Related articles GFI MailEssentials and Anti-Spam Keywords Keyword Checking does not block a specified word or phrase