How to add hook from shipping plugin?

Hi! I am trying your free version and before purchase (I need e-mails in 3 languages)
I have an important question – I am using Shipping plugin called Omniva where during checkout clients can select to which pick up point their parcel will be sent. I know that for default e-mails this info is included for clients and for the shop but I don’t know how to add this info hook using your plugin. In received e-mails it just shows that Shipping method is Omniva and doesn’t show information which pick up location client chose. Please help.