Add option to disable emails.

app/retrogit.go

@@ -295,13 +295,17 @@ func sendDigestHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	_, err = sendDigestForAccount(account, c)
+	sent, err := sendDigestForAccount(account, c)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 
-	session.AddFlash("Digest emailed!")
+	if sent {
+		session.AddFlash("Digest emailed!")
+	} else {
+		session.AddFlash("No digest was sent, it was empty or disabled.")
+	}
 	session.Save(r, w)
 	indexUrl, _ := router.Get("index").URL()
 	http.Redirect(w, r, indexUrl.String(), http.StatusFound)
@@ -355,6 +359,14 @@ func sendDigestForAccount(account *Account, c appengine.Context) (bool, error) {
 	oauthTransport.Token = &account.OAuthToken
 	githubClient := github.NewClient(oauthTransport.Client())
 
+	emailAddress, err := account.GetDigestEmailAddress(githubClient)
+	if err != nil {
+		return false, err
+	}
+	if emailAddress == "disabled" {
+		return false, nil
+	}
+
 	digest, err := newDigest(c, githubClient, account)
 	if err != nil {
 		return false, err
@@ -371,11 +383,6 @@ func sendDigestForAccount(account *Account, c appengine.Context) (bool, error) {
 		return false, err
 	}
 
-	emailAddress, err := account.GetDigestEmailAddress(githubClient)
-	if err != nil {
-		return false, err
-	}
-
 	digestMessage := &mail.Message{
 		Sender:   "RetroGit <digests@retrogit.com>",
 		To:       []string{emailAddress},

app/templates/index.html

@@ -10,24 +10,33 @@
   You're signed in as
   {{template "user" .User}}
   (<form class="inline" method="POST" action="{{routeUrl "sign-out"}}"><input type="submit" class="inline" value="sign out"></form>).
-  You'll be getting a {{.SettingsSummary.Frequency}} digest of your past
-  GitHub activity in {{.SettingsSummary.RepositoryCount}} repositories sent to
-  <code>{{.SettingsSummary.EmailAddress}}</code>
+  {{if eq .SettingsSummary.EmailAddress "disabled"}}
+    You've disabled emails, but you can still view your digest for your
+    GitHub activity in {{.SettingsSummary.RepositoryCount}} repositories below
+  {{else}}
+    You'll be getting a {{.SettingsSummary.Frequency}} digest of your past
+    GitHub activity in {{.SettingsSummary.RepositoryCount}} repositories sent to
+    <code>{{.SettingsSummary.EmailAddress}}</code>
+  {{end}}
   (<a href="{{routeUrl "settings"}}">change settings</a>).
 </div>
 
+{{if ne .SettingsSummary.EmailAddress "disabled"}}
 <div class="blurb">
   If you just can't wait, you can get your digest now:
 </div>
+{{end}}
 
 <div id="primary-actions">
   <form class="inline" method="GET" action="{{routeUrl "view-digest"}}">
     <input type="submit" class="action-button" value="View Digest">
   </form>
-  or
-  <form class="inline" method="POST" action="{{routeUrl "send-digest"}}">
-    <input type="submit" class="action-button" value="Email Digest">
-  </form>
+  {{if ne .SettingsSummary.EmailAddress "disabled"}}
+    or
+    <form class="inline" method="POST" action="{{routeUrl "send-digest"}}">
+      <input type="submit" class="action-button" value="Email Digest">
+    </form>
+  {{end}}
 </div>
 
 {{if .DetectTimezone }}

app/templates/settings.html

@@ -69,6 +69,8 @@
       {{range .EmailAddresses}}
           <option value="{{.}}" {{if eq . $accountEmailAddress}}selected{{end}}>{{.}}</option>
       {{end}}
+      <option disabled></option>
+      <option value="disabled" {{if eq "disabled" $accountEmailAddress}}selected{{end}}>Disabled (no email)</option>
     </select>
   </label>
     <div class="explanation">