* Update email.md
to emphasize the part that developer need to pay attention to, especially the file name, and rewrite the part of the sentences on updating default sender email to make it works with the new email provider. Such that those who read this documentation could avoid hours of troubleshooting this configuration, (like what I had)
Signed-off-by: William Cheong Weelau <cheongweelau@gmail.com>
* Update email.md
Added the missing `:::` to close the newly added tip paragraph
Signed-off-by: William Cheong Weelau <cheongweelau@gmail.com>
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