Segmenting your audience by birthdate is a powerful marketing strategy to improve customer engagement and increase conversions. This technique allows you to personalize your communications, send special offers at opportune moments, and create memorable experiences for your customers. Discover how to effectively set up birthday-based segments in Klaviyo.
Why segment your audience by birthdate?
Birthday segmentation offers several significant marketing advantages:
- Increased engagement: personalized birthday messages generate open rates up to 45% higher than standard emails.
- Improved conversions: birthday-related special offers have a conversion rate 5 times higher than regular promotions.
- Enhanced customer loyalty: 76% of consumers feel more connected to brands that acknowledge their important dates.
Effective methods for collecting birthdates
Before you can create birthday-based segments, you must first collect this essential information. Here are the best practices for obtaining this data:
1. Optimize your signup forms
Integrate a birthdate field into your signup forms by following these tips:
- Use a date picker to avoid formatting errors.
- Make this field optional to avoid friction.
- Briefly explain the benefit to the customer (e.g., "to receive a surprise on your birthday!").
2. Import your existing data
If you already have birthdate information in other systems:
- Export this data in CSV format.
- Ensure that the dates comply with a format compatible with Klaviyo (DD/MM/YYYY or YYYY-MM-DD).
- Import the file into Klaviyo, correctly mapping the birthdate column.
3. Set up a preferences page
Create a dedicated page where your subscribers can complete or update their information:
- Include a specific field for the date of birth.
- Highlight the benefits of sharing this information.
- Send regular reminders to encourage profile updates.

Step-by-step guide: creating an upcoming birthday segment
Once birthdates are collected, follow these instructions to create your first birthday segment in Klaviyo:
Step 1: access the segmentation module
- Log in to your Klaviyo account.
- Navigate to the "Audience" tab in the main menu.
- Select "Lists & Segments" from the dropdown menu.
Step 2: initialize a new segment
- Click the "Create" button in the top right.
- Select the "Create Segment" option from the menu.
Step 3: configure birthday criteria
- In the segment builder, select "Properties About Someone".
- Choose "Birthday" from the list of available properties.
- Select the condition "day is in the next X days".
- Define the desired period (e.g., 7 days for a weekly campaign).
Step 4: finalize and save
- Give your segment a clear name (e.g., "Birthdays – Next 7 Days").
- Add a description for easier future identification.
- Click "Create Segment" to finalize.
Create age-based segments for advanced targeting
Age-based segmentation allows you to tailor your communications to different generations within your audience. Here's how to proceed:
Step 1: access segment creation
Follow the same path as before to initialize a new segment.
Step 2: define age criteria
- Select "Properties About Someone" > "Birthday".
- Choose the condition "is between dates".
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Define the date range corresponding to the target generation:
- Generation Z: after 1997
- Millennials: between 1981 and 1996
- Generation X: between 1965 and 1980
- Baby Boomers: between 1946 and 1964
Step 3: save the demographic segment
Clearly name your segment (e.g., "Segment – Millennials") and save it.
Advanced marketing strategies using birthday segments
Automated birthday campaigns
Create an automated flow in Klaviyo that activates a few days before a subscriber's birthday:
- Start with a pre-birthday email with a special offer.
- Send a message on the big day with your personalized wishes.
- Plan a last-chance reminder if the offer hasn't been used.
Personalized promotions by generation
Adapt your offers according to the age of your segments:
- For Generation Z: focus on experiences and mobile content.
- For Millennials: offer eco-friendly products and loyalty programs.
- For Generation X: focus on quality and long-term value.
- For Baby Boomers: emphasize reliability and personalized customer service.
Continuous performance optimization
To maximize the effectiveness of your birthday segments:
- Regularly analyze open and conversion rates.
- Test different offers and wording.
- Adjust the frequency and timing of your communications.
Conclusion
Birthday-based segmentation in Klaviyo represents an exceptional marketing opportunity to create personal connections with your customers. By following the steps detailed in this guide, you can set up targeted campaigns that will increase engagement, boost sales, and strengthen brand loyalty.
Don't wait any longer to implement this effective strategy and transform your customers' birthdays into real growth opportunities for your business.