INTRO
MAIL is a lightweight Messaging Handling Service (MHS X.419).
> application:which_applications().
[{mail,"MAIL IPMS MHS Protocol","3.4"},
{syn,"SYN pub/sub", "1.5.0"},
{sh,"SH EXE REM SEC","3.5"},
{rocksdb,"RocksDB for Erlang","1.0.0"},
{mad,"MAD Manage Dependencies","5.4"},
{ssl,"Erlang/OTP SSL application","9.2.1"},
{cowlib,"COWLIB Web protocols.","2.6.0"},
{n2o,"N2O DAS MQTT TCP WebSocket","6.4"},
{kvs,"KVS Abstract Chain Database","6.4"},
{mnesia,"MNESIA CXC 138 12","4.15.6"},
{public_key,"Public key infrastructure","1.6.5"},
{crypto,"CRYPTO","4.4.1"},
{asn1,"The Erlang ASN1 compiler version 5.0.8","5.0.8"},
{stdlib,"ERTS CXC 138 10","3.8.1"},
{kernel,"ERTS CXC 138 10","6.3.1"}]