Hello,
1 - Yes, you need to use the order notification filter and select only the status that you want to send email for.
www.hikashop.com/support/documentation/1...ml#config_main_email
2 - Without more details about what you want to do exactly, all I can tell you right now is that you can override every emails in HikaShop (system > emails) including the HikaMarket emails.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.