How to Enrich Contacts by Adding Properties in Mailmodo

If your contact list is just a bunch of email addresses, you're missing out on serious marketing potential. Without enriched data on your contacts—like location, signup source, or membership status—your emails are likely to feel generic, and your campaigns won't have much scope for personalization

Contact enrichment transforms your database from a flat list into a dynamic, action-ready asset. And when done right, it opens the door to laser-targeted campaigns, personalized journeys, and smarter automation triggers.

Let’s explore how you can enrich your contacts effectively why it even matters.

What are contact properties?

In email marketing, contact properties are the details attached to each contact—such as first name, location, signup date, or user plan. These fields serve as the building blocks for:

• Dynamic segmentation (e.g., targeting users from a specific city)

• Personalized content (e.g., using {{first_name}} in subject lines)

• Triggered automations (e.g., sending an email when membership_status = expired)

The richer the contact profile, the more tailored and effective your campaigns can become.

What happens when you don’t enrich your contacts?

When your contact data is incomplete, it becomes harder to reach the right people with the right message. Here are the main ways un-enriched data can limit the effectiveness of your marketing campaigns:

• No segmentation: You cannot group contacts based on behaviors, interests, or demographic details, which limits your ability to target campaigns effectively.

• No personalization: Messages will appear generic, and you may even promote content that is irrelevant to recipients. This can lower engagement, including reduced open and click-through rates.

• Limited automation: Automated workflows cannot be triggered by changes that affect the process of doing better email marketing in a short time.

How to enrich contacts seamlessly

Most marketers patch together multiple tools for enrichment—spreadsheets, CRMs, form builders. Mailmodo simplifies this with an all-in-one approach.

Here are three ways you can enrich contacts directly within Mailmodo:

1. Manually enrich individual contacts

Manually updating contact information works well for small lists or when you want to prioritize high-value contacts.

Here is how to do it in Mailmodo:

• Go to Contacts from your Mailmodo dashboard and click on All Contacts.

• Click on the contact you want to update to open their profile.

• Navigate to the Properties tab and click Edit Properties to make changes.

• Add or update relevant fields, such as Company, Location, or Signup Source.

• After making the necessary updates, click Save to ensure the changes are applied.

• Save changes.

You can also add custom properties for your contacts, which allows you to track unique information about your contacts and tailor your campaigns more effectively.

2. Enrich contacts in bulk via CSV import

Bulk enrichment is ideal when you are migrating from another tool or need to update data for a large number of contacts at once. By using a Mailmodo CSV import, you can do it quickly. Here is how:

Steps:

• Prepare a CSV with columns for each property (e.g., Email, First Name, Location, Plan_Type)
• Go to Contacts and then click Import Contacts
• Upload your file and map fields correctly
• Mailmodo updates existing contacts or adds new ones with these properties

Pro tip: Follow Mailmodo’s formatting guidelines for date and timezone fields to avoid data import issues.

4. Enrich automatically via integrations

Automating contact enrichment through integrations allows you to keep your data up to date without manual intervention. Mailmodo offers seamless connections with various platforms to enrich your contact information in real-time.

Here is how to do it

• Navigate to Integrations in your Mailmodo dashboard.
• Search for the integration you wish to use and activate (e.g., Enrich Layer, HubSpot, Salesforce, or Zapier).
• Click on the integration and authenticate by following the on-screen instructions.
• Once connected, configure the integration to automatically enrich contact data based on your chosen criteria. Mailmodo will now automatically update your contacts with enriched information, ensuring your data remains current and accurate.

Conclusion

Enriching contact properties isn’t just a best practice—it’s a growth lever.

From smarter segments to hyper-personalized campaigns and automated journeys, enriched data empowers your team to deliver more relevant, timely, and effective communication.

Start enriching your contacts in Mailmodo today and unlock the full potential of your email marketing.