Common attachments

From ASSPSMTP

The following file-types in this extension list are commonly sent attachments that are generally considered safe. They should not pose a particular threat, as they are typically benign or are unable to execute code on systems running reasonably current versions of operating systems or applications required to read or open the files.

1. .AI   - Adobe Illustrator Vector Graphic file (Adobe Creative Suite)
2. .ASC  - ASCII Text file (used for PGP signatures)
3. .BHX  - BinHex Compressed Archive file
4. .BMP  - Bitmap Picture file
5. .CSV  - Comma Separated Values file
6. .DAT  - Data file (used by Microsoft Office Outlook e-mail with RTF and TNEF encapsulation)
7. .DOC  - Microsoft Word Document file (Microsoft Office)
8. .DOCX - Microsoft Word Document file, Open XML format (Microsoft Office)
9. .DOTX - Microsoft Word Template file, Open XML format (Microsoft Office)
10. .EMF  - Enhanced Windows Metafile file
11. .EML  - E-mail Message file (used with TNEF encapsulation)
12. .EMZ  - Enhanced Windows Metafile file, GZIP compressed
13. .EPS  - Encapsulated PostScript file
14. .GIF  - Graphic Interchange Format file
15. .HQX  - Macintosh BinHex Compressed Archive file
16. .ICS  - iCalendar Calendar Data file (calendar items for Mac, Office, Palm apps)
17. .INDD - Adobe InDesign Document file (Adobe Creative Suite)
18. .INDT - Adobe InDesign Template file (Adobe Creative Suite)
19. .JPEG - Joint Photographic Experts Group Image file
20. .JPG  - Joint Photographic Experts Group Image file
21. .P7S  - PKCS #7 Signature (used for S/MIME signatures)
22. .PDF  - Adobe Portable Document Format file (Adobe Creative Suite)
23. .PM6  - Adobe PageMaker (version 6) Document file
24. .PMT  - Adobe PageMaker Template file
25. .POTX - Microsoft PowerPoint Template file, Open XML format (Microsoft Office)
26. .PPT  - Microsoft PowerPoint Presentation file (Microsoft Office)
27. .PPTX - Microsoft PowerPoint Presentation file, Open XML format (Microsoft Office)
28. .PSD  - Adobe Photoshop Document file (Adobe Creative Suite)
29. .PUB  - Microsoft Publisher Document file (Microsoft Office)
30. .RAR  - RAR Compressed Archive file
31. .RPT  - Report file (Crystal Reports)
32. .RTF  - Rich Text Format file
33. .SIT  - StuffIt Compressed Archive file
34. .SITX  - StuffIt X Compressed Archive file
35. .SNP  - Microsoft Access Report Snapshot file (Microsoft Office)
36. .TIF  - Tagged Image Format file
37. .TIFF - Tagged Image Format file
38. .TXT  - Text file
39. .VCF  - vCard Contact Data file (contact items for Mac, Office, Palm apps)
40. .VCS  - vCalendar Calendar Data file (calendar items for Mac, Office, Palm apps)
41. .VSD  - Microsoft Visio Document file (Microsoft Office)
42. .WPD  - Corel WordPerfect Document file (Corel WordPerfect Office)
43. .XLS  - Microsoft Excel Spreadsheet/Workbook file (Microsoft Office)
44. .XLSB - Microsoft Excel Spreadsheet/Workbook file, Binary format (Microsoft Office)
45. .XLSX - Microsoft Excel Spreadsheet/Workbook file, Open XML format (Microsoft Office)
46. .XLTX - Microsoft Excel Template file, Open XML format (Microsoft Office)
47. .XPS  - XML Paper Specification file
48. .ZIP  - ZIP Compressed Archive file

Regular Expression

ai|asc|bhx|bmp|csv|dat|doc|docx|em[flz]|eps|gif|hqx|ics|ind[dt]|jpeg|jpg|p7s|pdf|pm[6t]|potx|ppt|pptx|psd|pub|rar|rpt|rtf|sit|sitx|snp|tif|tiff|txt|vc[fs]|vsd|wpd|xls|xls[bx]|xltx|xps|zip

• The Common Attachments list is based on and is an expansion of Micheal Espinola Jr's List of Creamy Goodness.