diff --git a/homeassistant/components/imap/coordinator.py b/homeassistant/components/imap/coordinator.py
index 74f7a86c0d6..34d3f43eb69 100644
--- a/homeassistant/components/imap/coordinator.py
+++ b/homeassistant/components/imap/coordinator.py
@@ -280,7 +280,7 @@ class ImapDataUpdateCoordinator(DataUpdateCoordinator[int | None]):
             if self.custom_event_template is not None:
                 try:
                     data["custom"] = self.custom_event_template.async_render(
-                        data, parse_result=True
+                        data | {"text": message.text}, parse_result=True
                     )
                     _LOGGER.debug(
                         "IMAP custom template (%s) for msguid %s (%s) rendered to: %s, initial: %s",
diff --git a/tests/components/imap/test_init.py b/tests/components/imap/test_init.py
index b86855bd78f..bdd29f7442b 100644
--- a/tests/components/imap/test_init.py
+++ b/tests/components/imap/test_init.py
@@ -726,9 +726,10 @@ async def test_message_data(
     [
         ("{{ subject }}", "Test subject", None),
         ('{{ "@example.com" in sender }}', True, None),
+        ('{{ "body" in text }}', True, None),
         ("{% bad template }}", None, "Error rendering IMAP custom template"),
     ],
-    ids=["subject_test", "sender_filter", "template_error"],
+    ids=["subject_test", "sender_filter", "body_filter", "template_error"],
 )
 async def test_custom_template(
     hass: HomeAssistant,