kai_yuan/p_mail @ v2.4.2

jinnrry 4f150fbf18 fix		2 lat temu
..
dkim	5ef5057032 v2.1	2 lat temu
ssl	5ef5057032 v2.1	2 lat temu
tables	a9c1ff7f7c fix	2 lat temu
config.dev.json	1b2b3a33ee feat: Add web push hook functionality and configuration options	2 lat temu
config.go	4f150fbf18 fix	2 lat temu
config.json	20f3590a04 V2.4.0 (#89)	2 lat temu
config_mysql.json	1b2b3a33ee feat: Add web push hook functionality and configuration options	2 lat temu