Add new Stripe customers to a Klaviyo list
HumDay can watch Stripe for new customers and subscribe each one to the Klaviyo list you choose. The contract states the one thing that matters most here up front: nobody is ever added twice, and what happens for an address Klaviyo rejects is written down before anything runs.
What this automation is built from
Real operations each provider publishes, in their own words. HumDay only ever uses the specific ones your approved contract needs.
Watching Stripe
Acting in Klaviyo
How this gets built
- Describe the outcome. The button above drops this job, already worded, into the composer — edit it until it says exactly what you want.
- Approve the contract. Before anything is built you see what it will do in Stripe and Klaviyo, what it will never do, and what happens when something fails.
- See it proven. The generated program runs and shows you the result — including the duplicate rule working — before it is allowed near either account.
- Grant access, then go live. You approve the specific operations it may use on each side — and only those.
Related automations
- Send a receipt email with Gmail when a payment lands in StripeStripe → Gmail
- Send a receipt email with Resend when a payment lands in StripeStripe → Resend
- Send a receipt email with Postmark when a payment lands in StripeStripe → Postmark
- Send a receipt email with Mandrill when a payment lands in StripeStripe → Mandrill
- Post a Slack alert for every new Stripe paymentStripe → Slack
- Post a Telegram alert for every new Stripe paymentStripe → Telegram
- Post a Google Chat alert for every new Stripe paymentStripe → Google Chat
- Log every Stripe payment to a Google Sheets spreadsheetStripe → Google Sheets
Questions about this automation
- Do I need to write code to add new Stripe customers to a Klaviyo list?
- No. You describe the job in plain words and HumDay works out which Stripe and Klaviyo operations it needs, writes the program, and shows you the result before anything runs live.
- What do I need before this can run?
- A Stripe account and a Klaviyo account. You connect each one when the automation is ready, and you are shown exactly which operations it will use on each side before you grant access.
- Will it ever act without my approval?
- No. The contract you approve names everything the automation may do, anything that writes to Klaviyo is held behind an approval you grant explicitly, and the generated program cannot reach any service the contract did not name.
- How do I know it works before it touches my accounts?
- Every automation runs a proof first: the generated program executes against realistic data and shows you the outcome — including what it does with duplicates and failures — before it is allowed near your live Stripe or Klaviyo account.
- What happens when something fails?
- The contract states the failure behaviour up front — what is retried, what stops the run, and when you are told. A failure is reported to you rather than silently swallowed, and the run's evidence shows exactly what happened.
Where this came from
Operations are read from the published API descriptions for Stripe and Klaviyo. Descriptions are each provider’s own words, not ours. See everything the Stripe and Klaviyo integration can do.