camscorner on "Attachments-Contact Form 7"

If you specify certain filetypes, this means that only these are allowed, and all other file extension uploads are denied. e.g.

[file your-file filetypes:pdf|txt] = .pdf & .txt file uploads allowed, .zip files and all other file types denied

[file your-file filetypes:pdf|zip] = .pdf & .zip file uploads allowed, all other file types denied

* Note that if you are receiving emails with .zip attachments to your email address that are not being sent directly from the contact form (e.g. they just have your email address), then there is nothing Contact Form 7 can do about this. In this case you need to adjust your spam settings in your cPanel or whatever web hosting panel you use (e.g. Spamassassin).