Make custom store API request when subscriber engages
When a contact clicks a special promotion link in Kit, make a custom API call in Mainstack to update store offer access.
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How Knit builds this workflow
The Agent researches both APIs and wires the trigger on one side to the action on the other — no pre-built connector required. Here is the vocabulary it has to work with.
Mainstack Explore Mainstack →
TriggersFires when a customer places a new order in Mainstack.
Fires when an order in Mainstack is paid, fulfilled, refunded or disputed.
Fires when a new customer account is created in Mainstack.
Fires when a customer abandons their cart before completing checkout in Mainstack.
Creates or updates a product or listing in Mainstack.
Updates an order's status or fulfillment details in Mainstack.
Sends a custom API request to Mainstack for actions not covered by a dedicated action.
Kit Explore Kit →
TriggersFires when a new subscriber is added in Kit.
Fires when a contact unsubscribes in Kit.
Fires when a subscriber opens or clicks a campaign in Kit.
Creates or updates a subscriber in Kit.
Unsubscribes a contact in Kit.
Adds a subscriber to a list or segment in Kit.
Sends a one-off transactional email via Kit.
More Mainstack + Kit workflows
Send cart recovery email to shoppers
When a customer abandons their shopping cart in Mainstack, automatically send a transactional recovery email in Kit to encourage order completion.
See details
Subscribe approved affiliates to partner email list
When a new affiliate program application is approved in Mainstack, automatically add their email address to the affiliate updates list in Kit.
See details
See all Mainstack + Kit integrations → · Browse the full workflow library →
Common questions
Can Knit build “Make custom store API request when subscriber engages” between Mainstack and Kit?
Yes — describe it in the box above and Knit's Integrations Agent researches Mainstack and Kit's public API docs (or your own uploaded docs) and builds a working workflow, whether or not either app already has a pre-built connector.
How long does it take to build?
Minutes to a first working version, not weeks — you test it against real data before it goes anywhere near production.
How does connecting Mainstack to Kit increase ecommerce sales?
When prospective buyers abandon their carts in Mainstack, an automated transactional recovery email or personalized discount can be sent instantly through Kit.
Can affiliate program milestones send automatic notifications?
Yes, when an affiliate is approved or earns a commission in Mainstack, Kit can send transactional emails or update affiliate mailing lists automatically.