Screenshots Automatically Resizing to 400 pixels wide

When adding a screenshot to an email, HubSpot automatically resizes the image and makes it too small (it defaults to 400 pixels wide).
If the screenshot is large (eg. a full screen), this then causes a problem for the email recipient, because the image is then too small and can’t be viewed.
To combat this, every time we paste a screenshot into an email, we have to select the image and then select the ‘Original’ option to resize the image back to its original size.
It would be great if there was setting that could be changed so that HubSpot would default to ‘Original’, rather than defaulting to ‘400’.