Be aware …

Fig 1 YahooMail may contain spelling errors

 

P.S. Clarification – originally I thought that they forgot to add ‘SpellCheck’ button on Reply screen but now I am completely lost. I have just checked Compose New, Reply and Forward and there is no ‘SpellCheck’ button anywhere and I am sure I used it many times.

 

Hmmm… Could it be that Yahoo system just switches it off when their servers reach certain load? What you think?