Which file types are generally safe to send as attachments in a professional email?

• A. Common formats like PDF, DOCX, XLSX, JPEG; avoid executable files and confirm recipient can access.
• B. Executable files like EXE or BAT.
• C. Only plain text files.
• D. Any file type as long as it’s small.

Answer: (A)

The main idea is choosing attachments that are both easy to access and safer to share. In professional emails, sticking with common formats such as PDF, DOCX, XLSX, and JPEG is best because these files are widely supported across systems and don’t execute code by default. This makes them reliable for recipients to open, review, and use without needing special software or risking hidden malware.

Even with these safe formats, it’s wise to consider security: scan attachments for viruses, avoid enabling macros in documents, and if the content is sensitive, prefer secure sharing or password protection rather than sending raw data. Also, check that the recipient can access the file type, as some organizations or devices have restrictions or older software that can’t handle certain formats.

Executable files should be avoided since they can run code and spread malware. Limiting yourself to plain text is too restrictive for most business needs, and claiming that any small file is safe ignores the fact that small files can still carry risky content or be blocked by email systems.