Samples put in the 'Mail out' category
| length (sec.) | Mel. profile | Dyn. profile | Dyn profile (global) | Note 1 | Note 2 | ||
| Feedback yes 3 | 0.25 | 
 | 
 | Pizz medium high freqs. +++ | Cartoon | ||
| Out mail 3 | 0.99 | 
 | 
 | cartoon | |||
| Out mail 1 | 0.93 | 
 | 
 |  | cartoon | ||
|  Feedback yes 1 | 0.38 | 
 | 
 | whistle medium high freqs. +++ | Cartoon | ||
| Out mail 2 | 0.785 | 
 | 
 | 
The "Mail out" category belongs to the "feedback degree +2" category - here is the corresponding typical profile :
| Polyphonic / monophonic | polyphonic | 
| Dynamic profile |  or  | 
| Melodic profile |  | 
| Length | 0.5 to 2 s. | 
-> conclusion <-
Short, upwards and going away sounds are highly recognized as "mail out" samples.