It sounds like you are sending HTML emails, you can try switching to Plain text. I don't use WLM myself, but apparently you go to Options> Send and choose Mail sending format as Plain text. See if that helps. A Guy
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Windows 10 Home x64INTEL Core i5-750 Quad-Core 3.37GHzHyperX Fury Black Series 8GB (2 x 4GB) 1866MhzEVGA GeForce GTX 750 Superclocked 1GB 128-Bit...