1. If I understand you correctly, because the site is currently offline to general users, and is password protected, the cover image will not be included in the post notification email. Correct?
Yes, you understand my point correctly.
2. If so, once the site goes live the email notification should contain the cover post image, right?
Yes, it is correct as long as you didn't block public user access your site frontpage and ensure that this template override file (post.new.php) file exist under this directory folder
JoomlaFolder/templates/yourCurrenTemplate/html/com_easyblog/emails/html/post.new.php .
3. Is there another way to add the image without using the cover image, and just placing the image in the post itself?
Yes, it is possible to achieve this, but you have to do this way :
1. Remove this template override file post.new.php from your template
2. Add readmore tag into blog content, show it will only show your intro text in email same as your frontend blog listing page.
3. Disable this truncation email content setting
http://take.ms/jSITo , so it will not stripped those HTML content from blog.
4. When I originally tried that method, the images in the post were far too large. I need the images to be 450 wide, and not 1200.
5. I tried by making sure the image size matched the orginal image size of 450, but did not work. The image remained much too large.
Are you referring that post cover image in email content? If yes, then you have to modify that post.new.php file because I hardcoded that image width to 100% , if you would like those post cover image render back the original width, then you have to remove this code from this post.new.php file. (screenshot :
http://take.ms/qEknE)