Random Secret Santa

Who does not know the situation: Christmas is around the corner, but it is nearly impossible to arrange a date at which everyone has time, or partners draw each others name and should not, or someone draws his own name all the time.
That is where the Secret Santa App jumps in: In no time all members are added with individual colors and off you go!
Afterwards, the device can be passed around so that everyone can look at their randomly assigned Secret Santa. To all those who can not be present, an email can be sent with the name of their participant.
For the next year the last assignment is retained until a new draw is made.
To not be assigned the same person ervery time, the current round can be saved and the result taken into account at the next draw.
Have fun with your Secret Santa!