The following file formats are allowed for attachments:
- Pictures : .bmp - .png - .jpg - .gif - .tif
Sounds : .mp3 - .m4a - .wma
Videos : .mp4 - .mov - .m4v - .mpg - .3gp - .3g2 - .wmv
Documents : .txt - .doc - .docm - .docx - .pps - .ppt - .pptm - .pptx - .xls - .xlsb - .xlsm - .xlsx - .pdf
Misc : .zip - .swf