PostGrid integration

Marketing & Advertising · 3 actions · API key auth

Programmatic direct mail delivery via the PostGrid Print & Mail API

Put PostGrid to work View PostGrid integration docs

Overview

The ModuleX PostGrid integration lets a ModuleX agent operate PostGrid on your behalf — running create actions across contacts, letters and postcards — directly from a plain-English request, using your organization's own PostGrid credentials. No pre-built workflow is required: the agent picks the right PostGrid action for the task.

PostGrid is a marketing & advertising platform. ModuleX adds the agent layer: ask for an outcome and it selects and runs the right PostGrid action — or, when you want a repeatable process, the composer assembles a PostGrid workflow for you, streaming the nodes onto the canvas as it builds.

Ask the assistant

Drive PostGrid in plain English

Type what you want. A ModuleX agent picks the right PostGrid action — or chains several — and runs it. No workflow to build.

Create a new contact in PostGrid
resolves tocreate_contact
Create a new letter in PostGrid
resolves tocreate_letter
Create a new postcard in PostGrid
resolves tocreate_postcard

Use cases

What you can automate with PostGrid

Create a contact straight from a requestcreate_contact
Create a new letter in PostGridcreate_letter
Create a new postcard in PostGridcreate_postcard

At a glance

PostGrid integration at a glance

VendorPostGrid

CategoryMarketing & Advertising

Actions available3

AuthenticationAPI key

Uses your own credentialsYes

Works with the assistantYes

Works in the composerYes

Multi-step / tool-chainingYes

Technical referenceView docs

Integration version1.0.0

Last updatedJun 2026

Reference

All 3 PostGrid actions

Contacts1

create_contact

Create a new contact in PostGrid

Letters1

create_letter

Create a new letter in PostGrid

Postcards1

create_postcard

Create a new postcard in PostGrid

See full parameters and response schemas in the PostGrid integration docs

Two ways

Two ways to use PostGrid in ModuleX

Ask the assistantType what you want done and a ModuleX agent picks the right PostGrid action and runs it — no workflow to build.

Compose a workflowNeed it to happen every time? Describe the process and the composer wires PostGrid into a repeatable workflow you can run on a schedule, from chat, or as an API.

Security

Connecting PostGrid

API keyPostGrid uses API-key authentication. You provide your own PostGrid secret key; ModuleX encrypts it and scopes it to your organization, so your whole team can use PostGrid without re-authenticating.

Step-by-step setup in the PostGrid docs

Pairs well with PostGrid

Agents often chain PostGrid with these — connect them once and the agent can use all of them in a single task.

FAQ

PostGrid + ModuleX FAQ

A ModuleX agent can run any of PostGrid's 3 actions — across contacts, letters and postcards — from a plain-English request, using your organization's own PostGrid credentials.

No. The agent selects the right PostGrid action from your prompt. A workflow is only needed when you want a repeatable process — and the composer builds that for you from a description.

Via your own PostGrid API key, stored encrypted and scoped to your organization.

3, spanning contacts, letters and postcards.

PostGrid runs on your own credentials, so any PostGrid usage is billed by PostGrid directly. ModuleX meters the agent run — and if you connect your own model keys, there's no ModuleX markup on model usage.

Put PostGrid to work in ModuleX.

Connect PostGrid once with your own credentials and let your agent run all 3 actions on demand.

Put PostGrid to work View technical docs

Last updated: Jun 2026Browse all 175 integrations →