Issues with sending zipped files via Gmail often arise due to email filters that block attachments containing executable files, which are commonly associated with viruses. If a user encounters a message indicating that their zipped file includes an executable, it is advisable to first test sending a simple zipped text file to determine if the issue is specific to the original file. If the problem persists with any zipped file, renaming the file extension (e.g., changing .zip to .txt) may allow it to be sent, but this is not a foolproof method as virus scanners typically detect such changes. The best solution is to remove any executable files from the zip before sending. If including an executable is necessary, uploading the zipped file to Google Drive or another online storage service and sharing a download link is recommended.