Using MailCheck (https://github.com/Kicksend/mailcheck)

form.html

<input name='email' type='email' />
<div class='suggestion'>
  <span>Did you mean <span class='value'></span>?</span>
</div>

setupMailcheck.coffee

domains = '126.com 163.COM abv.bg aim.com aol.com arcor.de att.net bellsouth.net bk.ru bluewin.ch btinternet.com centrum.cz charter.net comcast.net cox.net earthlink.net email.com fastmail.fm free.fr freenet.de gmail.com gmx.at gmx.ch gmx.com gmx.de gmx.net googlemail.com hmamail.com hotmail.co.uk hotmail.com hotmail.de hotmail.fr hotmail.it hush.ai hush.com hushmail.com i.ua i2pmail.org iki.fi inbox.com inbox.lv inbox.ru juno.com klzlk.com lavabit.com libero.it list.ru live.ca live.co.uk live.com live.com.au live.de live.dk live.fr live.nl live.se mac.com mail.bg mail.com mail.ru mailinator.com me.com mit.edu msn.com nym.hush.com o2.pl online.de optonline.net pobox.com prime.gushi.org qq.com rambler.ru riseup.net rochester.rr.com rocketmail.com safe-mail.net sbcglobal.net seznam.cz sharedaddy.com shaw.ca sina.com snkmail.com spamgourmet.com sporktronics.com t-online.de telenet.be telia.com telus.net tiscali.it tlen.pl tut.by ukr.net verizon.net web.de wp.pl ya.ru yahoo.ca yahoo.co.uk yahoo.com yahoo.com.ar yahoo.com.au yahoo.com.br yahoo.com.cn yahoo.com.vn yahoo.de yahoo.es yahoo.fr yahoo.it yahoo.se yandex.ru ymail.com zoho.com'.split(' ')

$ ->
  $('[type=email]').on 'blur', -> $(this).mailcheck
    domains: domains
    suggested: (el, suggestion) ->
      $('.suggestion').show()
      $('.suggestion .value').html(suggestion.full)