General:
[WILL NOT FIX]- I prefer to have getXXX() method when the main purpose is to return a value:
  ezcMailTools::generateContentID. 
[DONE] - Default variables when not set: $aap = '', $aap = null, or $aap = false.


Tests:
[WHAT DO YOU MEAN?]- Set the timezone somewhere that the test run separately.

ezcMail.php:41
[DONE, lacks impl] "Use setSubject if you require a special encoding.": Method setSubject does not exist.

ezcMail::generateHeaders
[DONE] Add doc, only for extension.

composer.php
[DONE, used null] Initialize $this->htmlText and $this->plainText as false in the constructor. Easier to check in other
functions.

tools.php
[IS OK]- uniqueID is not thread safe?
[SINCE IT IS STATIC]- lineBreak -> getLineBreak(). And why not a property?
[NO STRUCT ANYMORE THEN]- Tools work upon the mailAddress struct, but why not implement the methods
  there?

mail_address.php
[DONE]- __set_state() not documented ;-).

transport_smtp_exception.php
- The consts are not documented.

file_part.php
- Constructor contains:  /*,$encoding = ezcMail::BASE64*/ ..
- Can encoding be removed from the __get(), and __set() ?
[I'm letting it stay in the case we implement it..]

transport_smtp.php
[DONE]- consts are not documented.
[DONE]- You can link to the consts, if you want to.. e.g. in $status.
[DONE]- login(), throws also an Exceptions if the auth fails. Is not documented.
[WILL NOT FIX]- composeSmtpMailAddress .. or getComposedSmtpMailAddress ?  

Review Derick
=============
ezcMail.php:
misses a "setFrom", "setSubject", and "setBody" function
[added setSubject because of charset encoding, the others are properties]

[DONE] ezcMail::__get doesn't check whether the properties have all been set (I get
        undefined index notices with the new test case that I just added)
[now initialized to null]

Bugs:
[DONE] http://ez.no/bugs/view/7577
http://ez.no/bugs/view/7512
[DONE] http://ez.no/bugs/view/7578
[DONE] http://ez.no/bugs/view/7576
http://ez.no/bugs/view/7582