Phrasing.

src/App/Text/Explanations.purs

@@ -404,14 +404,14 @@ spf_introduction =
   [ HH.p []
     [ HH.text "Sender Policy Framework (SPF) is a way to tell the "
     , HH.u_ [HH.text "other mail servers"]
-    , HH.text " which are the mail servers supposed to send mails from "
+    , HH.text " which are the mail servers supposed to send mails with email addresses from "
     , HH.u_ [HH.text "your domain"]
     , HH.text ". "
     ]
   , HH.p []
     [ HH.text """
-    This way, we can mitigate spam.
-    A server receiving a mail from your email address but coming from an IP address we didn't list as authorized will be discarded.
+    This way, you can mitigate spam.
+    A server receiving a mail from your email address but coming from an IP address you didn't list as authorized will be discarded.
     This is not a bullet-proof technique, but it's simple enough and works great with the most basic forms of spam.
     """
     ]
@@ -420,8 +420,9 @@ spf_introduction =
     ]
   , HH.p []
     [ HH.u_ [HH.text "Advice for beginners"]
+    , HH.text ":"
     , HH.text """
-      : default values should work great with simple domains.
+      default values should work great with simple domains.
       Don't change anything, just click on the "Add" button below.
       In addition, make sure to have an MX record, which should be pointing to an A or AAAA record, and that will do it. 🥳
       """