No, using sandboxie is strictly forbidden as it allows you to money farm (advantage).
Example, imagine having a sultan full of alternative accounts (using sandboxie) - each account types /getmats, then matruns; after 10 matruns you give the materials to one person, which results in that one person receiving 10,000 materials, but if you matrunned using one account it would take around 4 matruns just to fulfill one person with 1,000 materials. Creates a huge advantage.
If you need anything else please don't hesitate to make another question or send me a private message. - Question Answered, moved to answered section.
[Jazzy Thomax - Assistant Helper Manager]