This is what your SnowGram will look like:
TO: bobby@homemail.com
FROM: St. Nick's Elves
SUBJECT: Brittany has sent you a SnowGram

Dear Bobby,

  Look OUT!!!
  @
  @
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  @
  @
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  @
  @
  
  S P L A T ! ! ! !
  
  
  Consider yourself hit with a snowball.

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                                     V
   SSSSS         NNN          NN          OOOOO       WW       W       WW        
 SSS     SSS     NNNN         NN       OO        OO    WW     WWW     WW 
  SSS            NN   NN      NN      OO          OO    WW    WWW    WW
      SSS        NN     NN    NN      OO          OO     WW   WWW   WW
         SSS     NN       NN  NN      OO          OO      WW  W W  WW               
  SSS     SSS    NN          NNN       OO        OO        WWW   WWW
     SSSSSS      NN           NN          OOOOO             WW   WW
                                     |
                                     |
                                     V
 BBBBBBBB                  AA               LLL             LLL
 BB      BBB              AAAA              LLL             LLL
 BB         BB           AA  AA      |      LLL             LLL
 BB        BBB          AA    AA     |      LLL             LLL
 BBBBBBBBB             AAAAAAAAAA    V      LLL             LLL
 BB      BBB          AAAAAAAAAAAA          LLL             LLL
 BB         BB       AA          AA         LLL             LLL
 BB      BBB        AA            AA        LLLLLLLLLLLLL   LLLLLLLLLLLL
 BBBBBBBB          AA              AA       LLLLLLLLLLLLL   LLLLLLLLLLLL
                                     |
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                                     V
                              snowballsnowball
                          snowballsnowballsnowball
                       snowballsnowballsnowballsnowball
                   snowballsnowballsnowballsnowballsnowba
                 snowballsnowballsnowballsnowballsnowballsn
                snowballsnowballsnowballsnowballsnowballsnow
               snowballsnowballsnowballsnowballsnowballsnowba
               snowballsnowballsnowballsnowballsnowballsnowba
               snowballsnowballsnowballsnowballsnowballsnowba
               snowballsnowballsnowballsnowballsnowballsnowba
                snowballsnowballsnowballsnowballsnowballsnowb
                 snowballsnowballsnowballsnowballsnowballsno
                 snowballsnowballsnowballsnowballsnowballsn
                   snowballsnowballsnowballsnowballsnowba
                    snowballsnowballsnowballsnowball
                          snowballsnowballsnowball
                             snowballsnowball
     
     
     
     
You are now involved in an e-mail snowball fight.
Send this to all your friends and relatives. Have fun with it.
Remember in an online snowball fight no one gets hurt
and no one gets cold and soaking wet.
So bop your friends before they get you.