diff --git a/.github/scripts/render_schema.py b/.github/scripts/render_schema.py
index d05b1c2..cd13800 100644
--- a/.github/scripts/render_schema.py
+++ b/.github/scripts/render_schema.py
@@ -35,7 +35,7 @@
 SCHEMA_DIR = ROOT / "schema"
 
 INDEX_FIELDS = ["name", "description", "family", "dashboard", "image", "category",
-                "icon", "color", "admin_for", "admin_rank", "depends_on",
+                "icon", "color", "admin_for", "admin_rank", "suggest_for", "depends_on",
                 "versions", "default_version", "env_role"]
 
 
diff --git a/schema/2.yaml b/schema/2.yaml
index 68af76f..49b0e85 100644
--- a/schema/2.yaml
+++ b/schema/2.yaml
@@ -21,6 +21,8 @@ changes:
   # about publishing a tree that means what it says rather than about safety.
   - path: admin_rank
     downgrade: drop
+  - path: suggest_for
+    downgrade: drop
   - path: dashboard_follows_color_scheme
     downgrade: drop
   - path: dashboard_login
diff --git a/schema/2/services/index.json b/schema/2/services/index.json
index 9c2be64..2e8e5f8 100644
--- a/schema/2/services/index.json
+++ b/schema/2/services/index.json
@@ -384,7 +384,10 @@
       "image": "docker.io/axllent/spamassassin:3",
       "category": "mail",
       "icon": "mail",
-      "color": "#cc0000"
+      "color": "#cc0000",
+      "suggest_for": [
+        "mailpit"
+      ]
     }
   ]
 }
diff --git a/schema/2/services/spamassassin.yaml b/schema/2/services/spamassassin.yaml
index 1e5bf12..56a84bf 100644
--- a/schema/2/services/spamassassin.yaml
+++ b/schema/2/services/spamassassin.yaml
@@ -9,3 +9,7 @@ family: spamassassin
 category: mail
 icon: mail
 color: "#cc0000"
+# Mailpit is built into lerd, so its page offers this preset rather than the
+# other way round.
+suggest_for:
+  - mailpit