Install from TER
Insert static template (powermail multiple upload) to your main template
As fieldtype you can now select “Multiple upload”. This fieldtype has one more option in its flexform: Amount of files (max). This option sets the maximum number of files the visitor can attach to his/her mail.
Q: Can I redesign the output of the file inside the form?
A: Yes you can do so by using CSS.
Q: Can I change the advice for the maximum number of files?
A: Yes, you can change it by TypoScript.
Example
tx_powermailmul_pi2._LOCAL_LANG.de {
tx_powermail_mul.multiupload.amount.label = Only up to %s files are allowed.
}
Use %s as placeholder for the number.