The check box which id is contactuserform-cc in profile.php activates sending email to the writer himself, and it is dealt as spam mail if it is gmail.
The warning message attached to the email received in gmail says as below:
Be careful with this message
Gmail could not verify that it actually came from **************** Avoid clicking links, downloading attachments or replying with personal information.

Report spamLooks safe

I'm not 100% sure it is an issue of geeklog, so I posted here instead of Issues/gitjhub.

Status: offline


Site Admin
Registered: 27/09/05
Posts: 1436
Yeah I just tested it.

Geeklog shouldn't be sending the email using the sender as the to like that. I added an improvement report:
One of the Geeklog Core Developers.



Additional info:
It doesn't look like sender-to issue, but sender itself issue.
The issue happens whether you check/activate the cc checkbox or not.

I manually modified the source file like below and it solved for myself.
sender: name<noreply@yourdomain>
message: author's email address + <br> +original message