The latest version (2.1) now has the ability to send text files to a cellular phone as SMS.
Text files can be created with any file manager (Explorer, Windows Commander, etc.), which supports the Windows context menu "Send To" option. During installation, HSLAB Text2SMS adds "Mobile Phone As SMS" to the "Send To" menu item. Simply right-click on a file and select "Send To"->"Mobile Phone As SMS".
The program then starts with text file loaded into the inbuilt editor ready for the recipients to be assigned. Then all that is needed is to click the "send message" button!
The program assumes, that the text files have txt or rtf extensions .
In all other cases you should confirm, that the file is text and to continue work.