diff --git a/db/migration/V0080__Backfill_CUNY_school_email_aliases.SQL b/db/migration/V0080__Backfill_CUNY_school_email_aliases.SQL
new file mode 100644
index 000000000..b7245bd4c
--- /dev/null
+++ b/db/migration/V0080__Backfill_CUNY_school_email_aliases.SQL
@@ -0,0 +1,23 @@
+DO $$
+BEGIN
+    CASE current_database()
+        WHEN 'codebloom-prod', 'codebloom-stg' THEN
+            ALTER TABLE "User"
+            DROP CONSTRAINT "ck_user_createdAt_not_null";
+
+            UPDATE "User" u
+            SET "schoolEmail" = split_part(u."schoolEmail", '@', 1) || '@' || domains.new_domain
+            FROM (VALUES
+                ('myhunter.cuny.edu', 'stu-mail.hunter.cuny.edu'),
+                ('baruchmail.cuny.edu', 'stu-mail.baruch.cuny.edu'),
+                ('citymail.cuny.edu', 'stu-mail.ccny.cuny.edu'),
+                ('stu.bmcc.cuny.edu', 'stu-mail.bmcc.cuny.edu')
+            ) AS domains(old_domain, new_domain)
+            WHERE lower(substring(u."schoolEmail" FROM '@(.*)$')) = domains.old_domain;
+
+            ALTER TABLE "User"
+            ADD CONSTRAINT "ck_user_createdAt_not_null" CHECK ("createdAt" IS NOT NULL) NOT VALID;
+        ELSE
+            RAISE NOTICE 'Skipping prod/staging only backfill: Current database is %', current_database();
+    END CASE;
+END $$;