

毎朝メールを読みます。
部長にメールを送りましたか。
昨日のメールはまだ見ていません。
"メール" is in the lesson "Office" (Level 34), along with 15 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.