type err = [ | `Rejected_sender of Async_smtp.Smtp_reply.t |
| `No_recipients of rejected_recipients |
| `Rejected_sender_and_recipients of Async_smtp.Smtp_reply.t * rejected_recipients |
| `Rejected_body of Async_smtp.Smtp_reply.t * rejected_recipients |
]include sig ... endval sexp_of_err : err ‑> Base.Sexp.tinclude sig ... endval sexp_of_t : t ‑> Base.Sexp.tval to_string : t ‑> stringval ok_or_error : allow_rejected_recipients:bool ‑> t ‑> string Core.Or_error.tval ok_exn : allow_rejected_recipients:bool ‑> t ‑> string