How do I stop text underlining in writing emails?

Hi Are the words that are underlined words that may be spelled wrong or names hat would not be in a dictionary? In that case the underlines are to warn you that there may be a spelling error. You can turn off spell check if you really don't want those alerts. Note that the underlines will not show to the person receiving your message unless they spell check incoming mails. If this is not the issue please explain the underlines problem in more detail or send a screenshot. Agnes