content/page/coc: various tweaks

* replace e-mail with email to be consistent with the original CoC text
* note that we will ignore unrelated messages
* make the mail address less search engine friendly

content/page/coc.md

@@ -4,8 +4,9 @@ You are reading the
 [Contributor Covenant 2.1](https://www.contributor-covenant.org/version/2/1/code_of_conduct/)
 with the following changes:
 
-* Replaced the [enforcement](#enforcement) e-mail address
-* Listed who receives these e-mails
+* Replaced the [enforcement](#enforcement) email address
+* Listed who receives these emails
+* Noted that this address is for CoC reports only
 
 ## Our Pledge
 
@@ -67,10 +68,14 @@ representative at an online or offline event.
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
 reported to the community leaders responsible for enforcement by emailing
-**<help@postmarketos.org>**.
+**`help<at>postmarketos.org`**.
 All complaints will be reviewed and investigated promptly and fairly.
 
-*E-mails sent to that address go to the CoC team ({{@ollieparanoid}},
+***This email address is only for Code of Conduct reports! Other messages sent
+to this email address will be ignored.** Use the
+[discussion platforms](/explore/#discussion-platforms) instead.*
+
+*Emails sent to that address go to the CoC team ({{@ollieparanoid}},
 {{@lucaweiss}}, {{@caleb}}, {{@PureTryOut}}).*
 
 All community leaders are obligated to respect the privacy and security of the