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Integration Guide

How to Segment Your Mailchimp Audience by Referral Activity with GrowSurf

Use GrowSurf fields inside your Mailchimp Audience to create segments for new participants, active referrers, and people close to a reward.

Want the full setup walkthrough?

Use these docs for exact setup steps, supported fields, and troubleshooting.

GrowSurf syncs referral data into the Mailchimp Audience you choose, which makes those values available anywhere Mailchimp can filter contacts by Audience field data. That means you can build useful referral segments without maintaining a second tagging system outside the integration.

Use this guide when you want different Mailchimp sends for brand-new participants, people who still have zero referrals, or advocates who are close to their next milestone.

Integration Steps

Connect Mailchimp and choose the Audience you want to segment

Mailchimp integration card inside GrowSurf
Pick the Audience in GrowSurf first so the referral fields exist before you start building Mailchimp segments.

Inside GrowSurf, connect Mailchimp, choose the Audience that should receive participant records, and save the integration. GrowSurf creates the referral merge fields on that Audience and keeps them available for future segmentation.

Start with the referral fields that map cleanly to audience filters

The most useful fields for segmentation are *|REFSTATUS|*, *|TREFCOUNT|*, *|MREFCOUNT|*, and *|NXTREWARD|*. These help you separate people who have never shared, people already earning credit, and people who are close to another reward.

Create a small set of high-value referral segments

  • Create a segment for participants whose total referral count is still 0 after their first invitation email.
  • Create a segment for participants whose referral status shows that a credit has already been awarded.
  • Create a segment for participants who have a next reward message and are worth nudging toward the next milestone.
Mailchimp referral email example used for a first-share reminder segment
Once you have a segment for inactive participants, a simple reminder email with the share link is often the fastest follow-up to launch.

Use those segments in campaigns or Customer Journeys

Mailchimp segments are most useful when each one lines up with a real message. Pair your zero-referral segment with a first-share reminder, your active-referrer segment with a progress update, and your near-reward segment with a milestone push.

Mailchimp referral email example focused on sharing a personal link
Segmented sends work best when each email keeps one simple action in focus: copy the link, open the portal, or share the offer.

Validate segment membership with real participant records

Before you rely on the segment for an important send, spot-check a few contacts against GrowSurf. If the referral count or status in Mailchimp matches what you see in GrowSurf, the segment logic is probably ready.

Tips

Name segments after the behavior you want to target

Labels like 0 referrals after launch or milestone follow-up are easier to reuse than generic names tied to one campaign.

Use numeric comparisons for referral counts

Referral-count fields are the clearest way to separate brand-new participants from active advocates, especially when you want to branch reminder timing.

Leave non-GrowSurf Audience fields optional

If Mailchimp requires fields that GrowSurf is not sending, contacts can fail to sync into the Audience you are trying to segment.

FAQ

Which GrowSurf fields are best for Mailchimp segmentation?

*|REFSTATUS|*, *|TREFCOUNT|*, *|MREFCOUNT|*, and *|NXTREWARD|* cover most segmenting needs because they tell you who has started sharing, who has already earned credit, and who is close to another reward.

Will participants appear in these segments if I connected Mailchimp late?

Newly synced participants will. If you connected Mailchimp after people were already imported into GrowSurf, use GrowSurf's Mailchimp sync remedy before assuming the Audience is complete.

Do I need extra tags on top of the GrowSurf fields?

Usually no. The synced GrowSurf fields already give you clean segmentation inputs, so adding a second manual tagging system usually creates more cleanup work than value.

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