Dynamics Outlook App - Categorise emails

Hello,

We are currently trialing the Dynamics Outlook app.

I'm familiar now with tracking emails against records (for example accounts). In addition I can create other activity types and complete the crm form from Outlook.

We have a requirement to categorise emails, for example:

An email may be regarding invoicing, membership or a contact change.

I'd like to hit track from Outlook, tracking the email against a company, and from a drop down, be able to select whether the email falls under "invoicing, membership or contact".

Is this possible? I am using Dynamics 365.

I appreciate any responses.

Matt