Email and Letter Template merge fields
Merge fields for the personal information in a Contact record located under the "Personal Info" tab)
Field name in the contact record Merge value
First Name {{first_name}}
Last Name {{last_name}}
Salutation {{salutation_dear}}
Formal Name {{salutation}}
Website {{website}}
Address {{home_address}}
Address 2 {{home_address2}}
City {{home_city}}
State {{home_state}}
Postal Code {{home_postal_code}}
Country {{home_country}}
Home Phone {{phone}}
Merge fields for the business information in a Contact record (located under the "Office Info" tab)
Field name in the contact record Merge value
Business Name {{business_name}}
Address {{business_address}}
Address 2 {{business_address2}}
City {{business_city}}
State {{business_state}}
Postal Code {{business_postal_code}}
Country {{business_country}}
Custom Data Fields and their merge values
Custom data fields - Fields you create in the "Custom Fields" section (Admin > Customize Account > Custom Fields tab) may be used as merge fields.