Sender Square

Sender + Square Integrations, Built by an AI Agent

Put Sender + Square to work with AI and enterprise-grade automation

Try:

Learn more about Sender integrations or talk to a human

Trusted by teams already building on Knit·4.9 out of 5 stars4.9/5 on G2·GoogleGoogle for Startups Accelerator
prismforceHackerearthIsotopes AIInfojobsPayoneerOutsolveSkuadPayworksItiliteOnsurityRazorpayXMultiplierPeoplestrongScrutCeipal

See the kind of workflows teams build with Sender and Square below — describe the exact one you want above and the Agent builds it on demand.

Sender + Square When a new subscriber signs up in Sender, update customer records in Square. See details
Send cart recovery email to shoppers When a customer abandons their shopping cart in Square, automatically send a transactional recovery email in Sender to encourage order completion. See details
Subscribe approved affiliates to partner email list When a new affiliate program application is approved in Square, automatically add their email address to the affiliate updates list in Sender. See details
Make custom store API request when subscriber engages When a contact clicks a special promotion link in Sender, make a custom API call in Square to update store offer access. See details

Browse the full workflow library →

Looking to achieve something else with Sender and Square?

Just describe what you need — the Agent researches both APIs and builds the real automation on demand.

Try Knit Free

Triggers & actions for Sender and Square

Everything Sender and Square can do inside a workflow — the triggers that start one and the actions that run when it fires.

Sender Explore Sender →

Sender is an email marketing platform that allows businesses to create, automate, and deliver email newsletters and SMS campaigns.

Triggers
New Campaign

Triggers when a new campaign is created.

New Subscriber

Triggers when a new subscriber is added.

New Group

Triggers when a new group is created.

New Subscriber in Group

Triggers when subscriber is added to group.

New Unsubscriber

Triggers when a subscriber unsubscribes.

New Unsubscriber From Group

Triggers when a subscriber is removed from a group.

Actions
Add / Update Subscriber

Adds a new subscriber. If subscriber with the same email exists, updates the subscriber's data.

Add Subscriber to Group

Adds a subscriber to a group.

Create Campaign

Creates a draft campaign

Remove Subscriber From Group

Removes a subscriber from a group.

Send Campaign

Sends a draft campaign.

Send Transactional Campaign

Send a transactional campaign to one subscriber.

Square Explore Square →

Square is a commerce and payment processing platform that enables businesses to accept payments, run point-of-sale systems, and manage operations.

Triggers
New Appointment

Triggers when a new appointment is created.

New Catalog Item

Triggers when a new catalog item is created.

New Customer

Triggers when a new customer is created.

New Invoice

Triggers when a new invoice is added.

New Order

Triggers when a new order is processed.

New Payment

Triggers when a new payment is created.

Actions
Add Customer to Group

Adds a customer to a group.

Create Appointment

Creates a new appointment.

Change Inventory

Adjusts an inventory or changes its physical count.

Create Customer

Creates a customer.

Create Invoice

Creates a new draft invoice for an order.

Create Paid Order

Creates an externally paid and completed order.

Enterprise-grade security

SOC 2 certified GDPR compliant ISO 27001 certified
Visit our Security Center Review the DPA

Customer Stories

See how leading technology firms are scaling their operations

Amazing Product With Exceptional Support from the team. By using Knit we managed to speed up our development by orders of magnitude.
H
Huynh H
Developer, Multiplier
A brilliant tool to let you seamlessly integrate with many different systems. It is very easy to integrate with and customer support is next level.
J
Jayesh
Co-Founder, Scrut
Seamless integration experience. Well-documented, self-explanatory APIs, and excellent service and support.
P
Poorvi
Product Manager, Onsurity
Easy to integrate. Knit's dashboard is intuitive for setting up and testing integrations, and the sandbox is extremely useful during development.
A
Aditya
Product Lead, RazorpayXPayroll
Knit shipped a brand-new Timesheet API in a week and handed us a ready-to-use NetSuite sandbox. That velocity is priceless when you're running payroll in 40+ countries.
R
Rohit Singh
GM, Payoneer Workforce Management

#1 in Ease of Integrations

4.9 out of 5 stars

4.9 out of 5 stars on G2

G2 Leader, Spring 2026G2 Fastest Implementation, Spring 2026G2 High Performer, Spring 2026G2 Best Est. ROI, Spring 2026
FAQ

Common questions about Sender + Square

Is there a pre-built Sender + Square automation?

Not yet, but Knit's Integrations Agent can build one — describe what you want and it researches Sender and Square's public API docs (or your own uploaded docs) and builds a working automation.

Does this require a pre-built Sender or Square connector?

No. The Agent works whether or not Sender or Square already has a pre-built connector in Knit's catalog — it researches the real API surface either way.

How long does it take to build?

Minutes to build a first working version, not weeks — you test it against real data before it goes anywhere near production.

How does connecting Square to Sender increase ecommerce sales?

When prospective buyers abandon their carts in Square, an automated transactional recovery email or personalized discount can be sent instantly through Sender.

Can affiliate program milestones send automatic notifications?

Yes, when an affiliate is approved or earns a commission in Square, Sender can send transactional emails or update affiliate mailing lists automatically.

Put Integrations on Autopilot. Talk to Experts.

Knit is loved by customers across the globe due to our seamless product and white glove support. You'll love us too!

Talk to a Human