Use mailing lists instead of aliases for stalwart

migrations/20231008100114_lists_recipients.sql

@@ -0,0 +1,12 @@
+-- Add migration script here
+
+ALTER TABLE emails
+	ADD CONSTRAINT email_type_unique UNIQUE (mail, type);
+
+CREATE TABLE list_recipients (
+	list TEXT NOT NULL,
+	type mail_type NOT NULL CHECK (type = 'list'),
+	recipient TEXT NOT NULL,
+	PRIMARY KEY (list, recipient),
+	FOREIGN KEY (list, type) REFERENCES emails (mail, type)
+);