Informal letters are sent to people you know well (for example, friends, relatives, etc.) about your recent news, personal problems, information you need, etc. They are written in an informal style with a personal tone.

An informal letter should consist of:

* an informal greeting (Dear Mark/Aunt Marie, etc.)
* an introduction in which you write your opening remarks (for example, asking about your relative's health, etc.) and mention your reason for writing:

Hello! How are you? I thought I'd write and let you know that...;

* a main body in which you write the main subject(s) of the letter in detail, starting a new pharagraph for each topic;
* a conclusion in which you write your closing remarks:

That's all my news for now. Write back soon...;

* an informal ending (for example, Lots of love/ Best wishes/etc. and your first name).