On Wed, Oct 12, 2022 at 10:32 PM Scott Lopez scottjl@gmail.com wrote:
#1 is gmail security. compress it to a zip and it should attach fine, and you'll save some space. #2 is windows security, relax your settings or add it to the access list as you found.
#1 This won't work. It is solely the ".img" extension that gmail blocks. Gmail temporarily extracts the file names within the ZIP file (even if it is encrypted with a password) and if the ".img" extension is present, the ZIP file will be blocked.
#2 It has nothing to do with Windows. You could be using Linux or macOS. If the file has a ".img" extension (even if it is simply a text file with the .img added to the end or the .txt changed to .img), gmail will block it.
As mentioned by the OP, a simple workaround is to tack on a different extension. ".txt" works. I have been using ".dat".
Jim KC9HI