Subscribe to this Mailing List - A Grammar and Kanji a Day Keeps the JLPT Blues Away!

Yookoso.com is a great resource

with both a mailing list you can sign up to
be able to receive a Kanji a day in your email.
And same goes for a grammar a day (taken from jgram.org).

There's also RSS feeds for Kanj-a-day (no grammar).

It makes studying much more digestible. 

What's great about the list is that it is grouped by JLPT Level! (Albeit by the OLD JLPT levels).

As a guide, if you're taking:

JLPT N5 - use the JLPT 4 list
JLPT N4 - use the JLPT 3 list
JLPT N3 - use the JLPT 2 list AND JLPT 3 list
JLPT N2 - use the JLPT 2 list
JLPT N1 - use the JLPT 1 list

Here's the list of the newsletters you can sign-up to receive:

• Grammar a Day - All
  A daily mailing list containing a random jGram grammar entry (All 4 JLPT levels and some selected phrases)
• Grammar a Day - JLPT 1
  A daily mailing list containing a random jGram grammar entry (JLPT level 1 - hardest level)
• Grammar a Day - JLPT 2
  A daily mailing list containing a random jGram grammar entry (JLPT level 2)
• Grammar a Day - JLPT 3
  A daily mailing list containing a random jGram grammar entry (JLPT level 3)
• Grammar a Day - JLPT 4
  A daily mailing list containing a random jGram grammar entry (JLPT level 4 - easiest level)
• JLPT 1 Kanji
  A Kanji a Day mailing list for random JLPT 1 Kanji (hardest level - 1150 total)
• JLPT 2 Kanji
  A Kanji a Day mailing list for random JLPT 2 Kanji (701 total)
• JLPT 3 Kanji
  A Kanji a Day mailing list for random JLPT 3 Kanji (181 total)
• JLPT 4 Kanji
  A Kanji a Day mailing list for random JLPT 4 Kanji (easiest level - 103 total)
• All 1945 Joyo Kanji
  A Kanji a Day mailing list for random Joyo (Jouyou) Kanji
• Grade 1 Kanji Only
  A Kanji a Day mailing list for random Grade 1 Kanji (80 total)
• Grade 2 Kanji Only
  A Kanji a Day mailing list for random Grade 2 Kanji (160 total)
• Grade 3 Kanji Only
  A Kanji a Day mailing list for random Grade 3 Kanji (200 total)
• Grade 4 Kanji Only
  A Kanji a Day mailing list for random Grade 4 Kanji (200 total)
• Grade 5 Kanji Only
  A Kanji a Day mailing list for random Grade 5 Kanji (185 total)
• Grade 6 Kanji Only
  A Kanji a Day mailing list for random Grade 6 Kanji (181 total)
  CLICK HERE TO SIGN-UP FOR THE MAILING LIST