Daily Vocab List – Free Subscription
“You get new words DAILY, which makes it easy for you to revise them daily in systematic and regular way (like a friend motivating you daily).
This system works better than books, word lists, flash cards, SMSs. And, it is free and easy.”
This is a verbatim from the site which provides this service. I have tried it and find it beneficial that’s why recommending it to you guys too. There is no harm in subscribing free issues; what say?
You can also set the frequency of words and kind of words. Site has
Words for Executives
General Words for All
(parents, housewives, others)