Klaviyo

Email your fans from Klaviyo and build segments like “spent more than $50 on my queue”. No field mapping to set up.

Connect Klaviyo

1. 1In Klaviyo, open Settings, then API keys, and create a private key with the profiles:write, lists:read and lists:write scopes (Full access to Profiles and Lists). It starts with pk_.
2. 2In Nero, open Settings, Developer, Klaviyo and paste the key. Connect CRM on the Fans table does the same.
3. 3Tap Sync to Klaviyo on the Fans table to send your fan list.

How the sync works

• Sync to Klaviyo sends your full list. Nero also syncs once a day, sending anyone with new activity.
• Fans are matched by email, so a re-sync updates their profile instead of duplicating it.
• Every fan with a usable email goes. Turn on Paid only in the Fans table to send just paying fans.
• Every synced fan is also added to a list called Nero fans, which Nero makes in your account if it is not there yet. Being on it is not email or SMS consent; segment on the properties below to reach the fans you have consent for.

Gold star list

Star an artist in your queue and Nero can add them to a second list, Nero gold star winners, once per artist. A flow you build on that list sends them whatever you like, such as their own single-use discount code. Nero emails nothing for this.

1. 1On Settings, Developer, Klaviyo, turn on Add starred artists to the list. Nero makes the list in your account if it is not there yet.
2. 2In Klaviyo flows, create a flow that starts when someone is added to Nero gold star winners and sends them your reward. A unique coupon code block gives each artist their own code.

Each profile Nero adds carries your Nero username, when the star happened and the song it was for, so the flow can mention them. This has nothing to do with the gold star reward Nero emails: use either, both, or neither. Being on the list is not email consent; your flow sends because you starred them, so keep it to the reward.

What lands on each profile

Contact details fill the standard Klaviyo fields. Everything from Nero is prefixed nero_, so it never collides with your other tools.

{
  "email": "fan@example.com",
  "first_name": "Beat",
  "last_name": "Fan",
  "phone_number": "+19109929771",
  "properties": {
    "nero_creator": "gabecohen",
    "nero_creator_id": "127b37af-87f9-44dd-8b70-28af2e61f050",
    "nero_total_spent": 135,
    "nero_submission_count": 15,
    "nero_first_purchase_at": "2025-12-20T23:10:08.800Z",
    "nero_last_purchase_at": "2026-06-18T20:40:08.800Z",
    "nero_instagram": "beatfan"
  }
}

Segment on Nero data

In Lists and segments, create a segment with a condition on Properties about someone. nero_total_spent greater than 50 finds your biggest spenders. nero_last_purchase_at older than 60 days finds fans worth winning back. Use nero_creator if more than one Nero creator syncs into this account.

Good to know

• Connecting adds one test profile (“Nero connection test”, connection-test@nero.fan) and puts it on the Nero fans list, to prove the key can do everything the sync does. Delete it from Profiles whenever you like.
• A key without all three scopes is refused when you connect, with the reason. So is a public key.
• Keep the two lists’ names as they are. Nero finds them by name, so a renamed list is replaced by a new empty one on the next sync or star.
• Phone numbers only send as full international numbers (+19109929771). Otherwise the fan syncs without one.
• One destination at a time. Connecting Klaviyo replaces a webhook connection, and the other way round. For any other tool, use the CRM webhook.

Read the Nero guides