QX Labs
All integrations
Postgrid
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Communication

Let agents send your physical mail for you

QX drafts, addresses and ships letters, postcards and checks through Postgrid—so your team runs direct mail at scale without ever touching an envelope.

@QX Did all the renewal letters go out last week?
QX
Yes—142 letters mailed, but 3 bounced on address verification (Acme Holdings, Northwind, Globex). I can re-verify the addresses and resend today. Want me to handle it?
Postgrid
Postgrid
Salesforce
Salesforce

Stop wrestling with mail merges, address errors, and check runs. Hand your physical mail to an agent.

Direct mail

Campaigns that mail themselves

Turn a list of contacts into hundreds of personalized letters or postcards—each one merged from a template, verified, and shipped through Postgrid without manual touch.

Payments

Checks cut on autopilot

Refunds, vendor payouts and rebates get drafted, approved and printed as physical checks—pulled from the right bank account and mailed to a verified address.

Address hygiene

Never mail to a bad address

Every recipient is verified and standardized before a single envelope ships—bounces, returns and wasted postage get caught before they cost you anything.

Postgrid

Real workflows, built for your team

Build complex workflows in minutes that chain Postgrid together with the rest of your stack. Trigger them on specific events, on schedule, or on demand.

Sales: Send a handwritten note after a closed deal

Opportunity marked Closed Won

Opportunity marked Closed Won

Triggered in Salesforce

QX Labs Icon

Pull contact & deal context

Agent step

QX Labs Icon

Draft a personalized note

Agent step

Deal ≥ $25k
Postgrid

Create contact & verify address

in Postgrid

Postgrid

Send the letter

in Postgrid

Confirm to account owner

Confirm to account owner

Alert via Slack

QX agents can send letters, mail postcards, issue checks—and a lot more in Postgrid

CREATESend a letter
CREATECreate a mail template
CREATEAdd a contact
CREATERegister a bank account
LISTList letters and delivery status
LISTList postcards and self-mailers
LISTList checks issued
UPDATEManage webhook subscriptions

+ 14 more actions

About Postgrid

Postgrid is a direct mail and address verification platform that lets businesses send physical letters, postcards and checks through a modern API. Used by thousands of companies for billing, marketing and compliance mail, its verification and tracking features make it a natural fit for end-to-end automation.

About QX Labs

QX is an AI agent platform that helps you build, run and scale AI across your team in a few clicks. Create agents that connect to your data and 1,000+ apps, building institutional memory that gets sharper every run. Then delegate tasks to them from where you already work—Slack, Teams, WhatsApp or email.

See Postgrid working inside your stack

Want an AI co-worker that runs your direct mail and check runs for you? Book a demo call to discuss your use cases, or get started for free.

Book a demo