Every Question We've Heard

It finds the broken first names in your Klaviyo, HubSpot or Mailchimp list (ALL CAPS, all lowercase, full names in the first-name field, junk values) and fixes them in the list itself. Anything uncertain is held for your review, so nothing gets guessed.

It’s the first word of most emails and texts you send. When it reads “Hi JENNIFER S,” or “Hi ,” the message looks like a mass blast, and people stop reading. Personalization only pays when the name is right: in Klaviyo’s BFCM report, messages with personalized, dynamic content had a 40% higher average order conversion rate (Klaviyo).

ALL CAPS (JENNIFER → Jennifer), all lowercase (mckay → McKay), stray characters and emoji, and codes left behind by CRM exports (Za'Rina → Za'Rina). Full names in the first-name field, titles like “Ms.”, and junk like “test” are held for your review.

They’re held for your review instead of changed. A name we can’t fix with confidence is flagged, and a blank we can’t fill honestly stays blank and flagged. We never write a guess to your list.

Yes, with Name Enricher, included in Pro and up. When the email address clearly contains a name (jane.doe123@gmail.com → Jane), it adds it. When it doesn’t (info@acme.com), the contact is flagged for your review.

PROPER capitalizes the first letter of every word, and that’s all. “mckay” becomes “Mckay”, “SARAH JOHNSON” becomes “Sarah Johnson” and is still a full name in a first-name field, “test” becomes “Test”, an email address becomes “Jane.Doe123@Gmail.Com”, and a blank stays blank. It also means exporting your list, cleaning a copy, and re-importing it, and the list is messy again as soon as new contacts arrive. We fix the names in the list itself.

Connect Klaviyo with an API key. First Name Cleaner scans the list or segment you choose, shows you every change, and writes the ones you approve straight back to the profiles. No export, no spreadsheet, no re-import.

Klaviyo’s personalization tag can display a name in title case (Klaviyo help), and its data-transformation add-on, part of Advanced KDP, can write a capitalized copy to a new property while leaving the original unchanged (Klaviyo help). Neither fixes a full name in the first-name field, a title, or an email address sitting where a name should be, and neither holds the uncertain ones for review. We fix the first-name field itself.

HubSpot can fix capitalization formatting automatically on Data Hub Professional or Enterprise (HubSpot knowledge base). First Name Cleaner works on any HubSpot plan, and it handles more than capitalization: full names in the first-name field, titles, junk values, and the uncertain cases held for your review.

Mailchimp’s *|TITLE:FNAME|* changes how the name is displayed in that one email (Mailchimp merge tag cheat sheet). The stored name stays broken everywhere else it’s used. We fix the record itself.

You can, for a few hundred names. But it means pasting your customers’ names into an AI tool and copying the results back by hand, one batch at a time. First Name Cleaner never sends your contacts to an AI model, and it writes the clean names back to your list for you.

Insycle is built for data teams standardizing every field across systems. If that’s you, great. If you’re a marketer who just wants the first name to be right, that’s us. Insycle starts at $100 a month, billed annually, and has no Klaviyo connector.

No. Before we write anything back, we show you a full preview of every change. Your original values are saved before anything changes. You approve in bulk or record by record. We don’t delete anything. On paid plans, restore any change in one click from your Klaviyo account.

Yes. Every original value is backed up before anything changes. On paid plans, restore any change in one click from your Klaviyo account.

No. Your contacts are never sent to OpenAI, Anthropic, or any other AI provider, and never used to train a model.

You connect Klaviyo with an API key, or link your HubSpot or Mailchimp account, or upload a CSV. Your list stays yours, and every original value is saved before anything changes. See our privacy policy for exactly how your data is handled.

We handle Latin-script names across major languages, including hyphenated names, apostrophes, and accents. Names in non-Latin scripts (Arabic, Chinese, Japanese, Korean, Cyrillic) we leave exactly as we found them rather than guess.

1,000 records are free every month, plus a one-time 5,000-record bonus when you connect Klaviyo, HubSpot or Mailchimp. After that: One-Time Clean at $5 flat per file (up to 50,000 rows), Pro at $49/month, List Intake Monitor at $99/month (Klaviyo only), and Agency at $199/month (Klaviyo only). 14-day free trial on paid plans. Card required. Cancel anytime.

That’s the List Intake Monitor. It cleans new Klaviyo profiles automatically as they arrive from forms, checkouts, lead ads and imports, so you set it up once and stop thinking about it.

Yes. The Agency plan connects up to 10 Klaviyo accounts and includes white-label reporting.

No. Upload a CSV and get a clean CSV back, no account needed.