SAP,ABAP PROGRAMMING,Reports,Bdc,SAP Scripts,Smart Forms,Module pool,ALV Interactive, Classic reports,ALE,EDI,Work Flow,User Exits,Customer Exits,BADI,BAPI,Cross Applications,RFC,ABAP Dictionary,ABAP Performance,ABAP Optimization,Function Modules,Sub Routines,LUW'S,SMAPLE Codes,Modularization,Debugging,Internal table,interview Questions,FAQ'S...Series of Complete Course of all major topics of ABAP
If you this is not enough for you will probably want to write your own ABAP routines for generating the text and generating the attachments to go with the text.
Use the function group SO01 which contains functions of the form SO_*_API1 which are ideal for creating your own sophisticated messages. There are plenty of advantages of how these are used within the SAP system.
t is very easy sending standard text , which may include data from the workflow. You simply create a background step which sends the work item description. This may include variables which will be substituted when mail is sent.
In early releases you have to create your own task based on the method SELFITEM SendTaskDescription. In later releases a wizard is available for creating the step and in release 4.6 there is even a step type which does this all for you automatically.
Whichever path you take, there is very good online documentation describing exactly what has to be done.
