diff --git a/container-compose.yml b/container-compose.yml
index cb3aeda8..deaa10e2 100644
--- a/container-compose.yml
+++ b/container-compose.yml
@@ -124,6 +124,7 @@ services:
       dockerfile: Containerfile
       additional_contexts:
         - watcher_source=./watcher
+        - denis_source=./denis
     volumes:
       - type: volume
         source: email-mail
@@ -133,12 +134,17 @@ services:
         source: email-logs
         target: /var/lib/email/logs
         read_only: true
+      - type: volume
+        source: denis-db
+        target: /var/lib/denis
+        read_only: true
       - type: volume
         source: submissions-db
         target: /var/lib/mailman
         read_only: false
     depends_on:
       - smtp
+      - denis
     networks:
       - mailman
   denis:
diff --git a/mailman/Containerfile b/mailman/Containerfile
index 55a1b422..9ea8f87d 100644
--- a/mailman/Containerfile
+++ b/mailman/Containerfile
@@ -27,6 +27,7 @@ RUN mkdir -p /var/lib/mailman/ && \
 RUN chown -R 100:100 /var/lib/mailman
 
 COPY --from=build /watcher/watcher /usr/local/bin/watcher
+COPY --from=denis_source . ./denis
 
 VOLUME /var/lib/email/
 
diff --git a/mailman/db.py b/mailman/db.py
index 8c6a4f16..8e80a745 100755
--- a/mailman/db.py
+++ b/mailman/db.py
@@ -13,10 +13,11 @@ class Meta:
 
 class Submission(BaseModel):
     submission_id = peewee.TextField(unique=True)
-    assignment = peewee.TextField()
     timestamp = peewee.IntegerField()
     user = peewee.TextField()
-    status = peewee.TextField()
+    recipient = peewee.TextField()
+    email_count = peewee.IntegerField()
+    in_reply_to = peewee.TextField(null=True)
 
 
 if __name__ == '__main__':
diff --git a/mailman/submit.py b/mailman/submit.py
index 9f3fffb6..e031633f 100755
--- a/mailman/submit.py
+++ b/mailman/submit.py
@@ -4,14 +4,8 @@
 from pathlib import Path
 import sys
 
-import patchset
 import db
 
-ASSIGNMENT_LIST = ["introductions",
-                   "exercise0", "exercise1", "exercise2",
-                   "programming0", "programming1", "programming2",
-                   "final0", "final1"]
-
 
 Email = collections.namedtuple('Email', ['rcpt', 'msg_id'])
 
@@ -35,37 +29,26 @@ def main(argv):
     if not emails:
         return 0
 
-    cover_letter, *patches = emails
-
-    # if the 'cover letter' is not addressed to
-    # an assignment inbox, this email session
-    # isn't a patchset at all
-    if cover_letter.rcpt not in ASSIGNMENT_LIST:
-        # TODO process peer review
-        return 0
-
-    sub = db.Submission(submission_id=logfile, assignment=cover_letter.rcpt,
-                        timestamp=timestamp, user=user, status='new')
-
-    # only one email
-    if not patches:
-        # only one patch, but addressed to an
-        # assignment inbox. This cannot be valid.
-        sub.status = 'no patches or no cover letter'
-        sub.save()
-        return 0
-
-    mis_addressed_patches = [str(i+1) for i, patch in enumerate(patches)
-                             if patch.rcpt != cover_letter.rcpt]
-
-    if mis_addressed_patches:
-        sub.status = (f'patch(es) {",".join(mis_addressed_patches)} '
-                      f'not addressed to {cover_letter.rcpt}')
-        sub.save()
-        return 0
-
-    sub.status = patchset.check(cover_letter, patches, submission_id=logfile)
-    sub.save()
+    irt_header = 'In-Reply-To: <'
+    reply_id = None
+    with open(f'/var/lib/email/mail/{emails[0].msg_id}') as f:
+        for line in f:
+            if not line:
+                break
+            if not line.startswith(irt_header):
+                continue
+            at_sign = line.find('@', len(irt_header))
+            if -1 == at_sign:
+                continue
+            reply_email_id = line[len(irt_header):at_sign]
+
+            # "clear the lower 16 bits" to get the reviewee patchset id
+            reply_id = reply_email_id[:-4] + '0000'
+            break
+
+    db.Submission.create(submission_id=logfile, timestamp=timestamp,
+                         user=user, recipient=emails[0].rcpt,
+                         email_count=len(emails), in_reply_to=reply_id)
 
 
 if __name__ == "__main__":
diff --git a/orbit/radius.py b/orbit/radius.py
index 5985cd7f..84204431 100644
--- a/orbit/radius.py
+++ b/orbit/radius.py
@@ -389,7 +389,8 @@ def handle_dashboard(rocket):
 
     def submission_fields(sub):
         return (datetime.fromtimestamp(sub.timestamp).isoformat(),
-                sub.assignment, sub.submission_id, sub.status)
+                sub.recipient, sub.email_count, sub.in_reply_to or '-',
+                sub.submission_id, )
 
     # Split data from Submission table into values for HTML table
     table_data = [[f'<td>{val}</td>' for val in submission_fields(sub)]
@@ -397,7 +398,7 @@ def submission_fields(sub):
     table_content = '</tr>\n<tr>'.join(''.join(row) for row in table_data)
 
     return rocket.respond(f"""<table>
-<tr><th>Timestamp</th><th>Assignment</th><th>Submission ID</th><th>Status</th></tr>
+<tr><th>Timestamp</th><th>Recipient</th><th>Email Count</th><th>In Reply To</th><th>Submission ID</th></tr>
 <tr>{table_content}</tr>
 </table>
 """)