Understand contact details and attributes
Learn about the different types of information you can store for each contact in your Sender account.
Standard Contact Fields
These are the basic fields available for every contact:
Email Address (Required)
- The primary identifier for each contact
- Must be unique and valid
- Format: example@domain.com
First Name
- The contact’s given name
- Used for email personalization
- Optional but recommended
Last Name
- The contact’s surname or family name
- Helps with better personalization
- Optional but recommended
Custom Attributes
Beyond standard fields, you can add custom attributes to store additional information about your contacts:
- Phone numbers
- Company name
- Job title
- Location or address
- Birthday or anniversary dates
- Purchase history
- Preferences
- Any other relevant data
Why Use Contact Attributes?
Better Segmentation
Group contacts based on specific attributes for targeted campaigns.
Personalization
Use contact details to create more personalized email content.
Organization
Keep all relevant information in one place for easy access.
Campaign Targeting
Send the right message to the right people based on their attributes.
Adding Attributes During Import
You can include custom attributes when importing contacts:

Please keep in mind that each additional column becomes a custom attribute for that contact.
Best Practices
- Keep it relevant – Only collect information you’ll actually use
- Stay consistent – Use the same format for similar data across all contacts
- Respect privacy – Only store information contacts have consented to share
- Update regularly – Keep contact information current and accurate
That’s it!
If you got stuck on a specific task or can’t find a way to execute a particular job, contact our support team via LiveChat or support@sender.net – we’re here to help 24/7.