incomming mail processing

backend/app/database.py

@@ -259,6 +259,22 @@ CREATE TABLE IF NOT EXISTS security_audit_events (
 );
 CREATE INDEX IF NOT EXISTS idx_security_audit_events_created_at ON security_audit_events(created_at);
 CREATE INDEX IF NOT EXISTS idx_security_audit_events_actor_id ON security_audit_events(actor_id);
+'''),
+    (18, '''
+CREATE TABLE IF NOT EXISTS inbound_email_messages (
+    mailbox TEXT NOT NULL,
+    uid TEXT NOT NULL,
+    message_id TEXT,
+    user_id TEXT,
+    link_id TEXT,
+    status TEXT NOT NULL,
+    details TEXT NOT NULL DEFAULT '{}',
+    created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (mailbox, uid),
+    FOREIGN KEY(user_id) REFERENCES users(id) ON DELETE SET NULL,
+    FOREIGN KEY(link_id) REFERENCES links(id) ON DELETE SET NULL
+);
+CREATE INDEX IF NOT EXISTS idx_inbound_email_messages_message_id ON inbound_email_messages(message_id);
 ''')
 ]