The first time I tried to send archived files to/from a Gmail email account was 1 month ago and I noticed that you cannot send this kind of files. I tried multiple times and failed always.

If I send an email to a Gmail account, I get a reply with the text message:

> This is an automatically generated Delivery Status Notification.
> Delivery to the following recipients failed.

Viewing the email source, I found out this:

> Final-Recipient: rfc822; Action: failed  
> Status: 5.5.0 Diagnostic-Code: smtp;552-5.7.0 This message was blocked  
> because its content presents a potential 552-5.7.0 security issue.  
> Please visit 552-5.7.0  
> to review our  
> 552 5.7.0 message content and attachment content guidelines.  
> m3si23238476wjw.33 - gsmtp

**Is there a way to circumvent this?** The archived files I tried were zip, rar, no password, with password, encrypted. None of them worked. The archive contained a Kicad project.