Currently when using Email marketing within Online Express the available fields are:
 
  • Full name / Org name
  • Email
  • Title
  • First name
  • Nickname
  • Middle name
  • Last name
  • Suffix
  • Address line 1
  • Address line 2
  • Address line 3
  • City
  • State / Province
  • Zip / Postal Code
  • Country
  • Business name
  • Job title
  • Primary Addressee
  • Primary Salutation
  • Secondary Addressee
  • Secondary Salutation
  • Tertiary Addressee
  • Tertiary Salutation

NOTE: The Address fields will populate based on the Preferred Address.
The Business name and Job title will populate from the Primary Business relationship on the Bio1 tab

There are no additional fields available for Emails being sent from Online Express.