Every year during Eid Mubarak, Indonesian workers get THR or Tunjangan Hari Raya, a legally mandated salary bonus. During Eid Mubarak, it's the best time to do "Zakat" or charity for poor people. 'Rumah Zakat', a non profit organization for helping poor people, made a direct mail using a special double-sided THR Envelope.

One side is where we put the name of the THR receiver (Like a normal THR envelope), while the other side, almost looks the same, but actually we put the address of Rumah Zakat on it; with reminder that 2.5% of their THR belongs to the poor people, thus they can (should) send the THR to Rumah Zakat to be donated to poor people.