Client use this to change extended email user information. Server should reply via 
SNAC(15,03)/07DA/0087 which contain 
flag byte. If flag byte doesn't equal 0x0A - there was an error saving info.
  
|  00 15 | 
  | 
word | 
  | 
SNAC family | 
 
|  00 02 | 
  | 
word | 
  | 
SNAC subtype | 
 
|  00 01 | 
  | 
word | 
  | 
SNAC flags | 
 
|  xx xx xx xx | 
  | 
dword | 
  | 
SNAC request-id | 
 
 
 |  
 |  
|   | 
|  00 01 | 
  | 
word | 
  | 
TLV.Type(1) - encapsulated META_DATA | 
 
|  xx xx | 
  | 
word | 
  | 
TLV.Length | 
 
 
 |  
 |  
|   | 
|  xx xx | 
  | 
word (LE) | 
  | 
data chunk size (TLV.Length-2) | 
 
|  xx xx xx xx | 
  | 
dword (LE) | 
  | 
request owner uin | 
 
|  D0 07 | 
  | 
word (LE) | 
  | 
data type: META_DATA | 
 
|  02 00 | 
  | 
word (LE) | 
  | 
request sequence number | 
 
|  0B 04 | 
  | 
word (LE) | 
  | 
data subtype: META_SET_EMAIL_USERINFO | 
 
 
 |  
|  xx | 
  | 
char | 
  | 
number of email addresses (sometimes
  may be zero) | 
 
|   | 
 
|  xx | 
  | 
char | 
  | 
pemail flag (0-publish, 1-don't) | 
 
|  xx xx | 
  | 
word (LE) | 
  | 
email1 string length | 
 
|  xx .. xx 00 | 
  | 
asciiz str | 
  | 
email1 string | 
 
|  ... | 
  | 
... | 
  | 
... | 
 
|  xx | 
  | 
char | 
  | 
pemail flag (0-publish, 1-don't) | 
 
|  xx xx | 
  | 
word (LE) | 
  | 
emailn string length | 
 
|  xx .. xx 00 | 
  | 
asciiz str | 
  | 
emailn string | 
 
 
 |  
 
 |   
 |   | 
 
|   |  
 
 |   
 |   
 |   | 
 |   |  
 
 |   
 |   
 |