Text or binary are the type of the plaintext. For Base64, if the mode is text, '\n' is turned into '\r\n' when encoding, and vice versa.
include sig ... end
val sexp_of_known : known ‑> Sexplib.Sexp.t
val hash_fold_known : Base.Hash.state ‑> known ‑> Base.Hash.state
val hash_known : known ‑> Base.Hash.hash_value
include sig ... end
val sexp_of_t : t ‑> Sexplib.Sexp.t
val hash_fold_t : Base.Hash.state ‑> t ‑> Base.Hash.state
val hash : t ‑> Base.Hash.hash_value
val default : known
val default' : t
val of_headers_or_default : ?ignore_base64_for_multipart:bool ‑> Email_message__.Headers.t ‑> t
Determine an encoding based on email headers. ignore_base64_for_multipart
is
useful because some clients can't read RFCs and incorrectly indicate a transfer
encoding of base64 for multipart messages.