1 files changed, 18 insertions, 1 deletions
diff --git a/src/imap/mailbox_view.rs b/src/imap/mailbox_view.rs
index 77fe7f7..3f8389b 100644
--- a/src/imap/mailbox_view.rs
+++ b/src/imap/mailbox_view.rs
@@ -1,7 +1,7 @@
 use std::num::NonZeroU32;
 use std::sync::Arc;
 
-use anyhow::{anyhow, Error, Result};
+use anyhow::{anyhow, Error, Context, Result};
 
 use futures::stream::{FuturesOrdered, StreamExt};
 
@@ -130,6 +130,7 @@ impl MailboxView {
         data.extend(self.flags_status()?.into_iter());
         data.push(self.uidvalidity_status()?);
         data.push(self.uidnext_status()?);
+        self.unseen_first_status()?.map(|unseen_status| data.push(unseen_status));
 
         Ok(data)
     }
@@ -400,6 +401,22 @@ impl MailboxView {
         Ok(Body::Data(Data::Recent(self.recent()?)))
     }
 
+    fn unseen_first_status(&self) -> Result<Option<Body<'static>>> {
+        Ok(self.unseen_first()?.map(|unseen_id| {
+            Status::ok(None, Some(Code::Unseen(unseen_id)), "First unseen.").map(Body::Status)
+        }).transpose()?)
+    }
+
+    fn unseen_first(&self) -> Result<Option<NonZeroU32>> {
+        Ok(self.0.snapshot.table
+            .values()
+            .enumerate()
+            .find(|(_i, (_imap_uid, flags))| {
+                !flags.contains(&"\\Seen".to_string())
+            }).map(|(i, _)| NonZeroU32::try_from(i as u32 + 1))
+            .transpose()?)
+    }
+
     pub(crate) fn recent(&self) -> Result<u32> {
         let recent = self
             .0