Attachments can optionally be restricted to PDF and Office documents. To implement this, please enter the following values in the system settings: settingKey: AttachmentFileFilter settingValue: Example 1: Only Powerpoint, Word, Excel and PDF files are displayed for selection. Powerpoint (*.pptx)|*.pptx|Word (*.docx)|*.docx|Excel (*.xlsx)|.xlsx |PDF (*.pdf)|*.pdf Example 2: In addition to the files in example 1, CSV files are also possible. Powerpoint (*.pptx)|*.pptx|Word (*.docx)|*.docx|Excel (*.xlsx)|*.xlsx |CSV (*..csv)|*.csv|PDF (*.pdf)|*.pdf |