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Vinkius

Poplar Connector for AI agents.

11 live capabilities

Send physical postcards and letters through your AI agent.

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AI Agent

Why people use Poplar

Poplar for Automated Direct Mail Outreach

With the Poplar MCP, that whole process disappears. You just tell your agent to send a postcard to your last 50 churned customers. It finds the list, cleans the addresses, and triggers the mailers in one go. You get a confirmation in your chat and can move on to your next task.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
  • Visual Studio Code
  • Windsurf

What Vinkius changes

You stop copy-pasting addresses and start sending physical mail through a simple conversation.

Use it from Claude, ChatGPT, Cursor or another AI client you already have.

One account · 5,900+ Connectors

  1. Real-world use case 01

    Churn Prevention

    A retention manager asks the agent to send a win-back postcard to 50 customers who haven't ordered in 3 months using trigger_physical_mailer.

  2. Real-world use case 02

    Lead Nurturing

    A growth marketer tells the agent to mail a physical brochure to high-value leads who visited the pricing page by adding them to a list with add_to_audience.

  3. Real-world use case 03

    E-commerce Attribution

    An owner reports a sale back to Poplar to see if a recent direct mail campaign worked by using report_transaction.

Complete set · 11capabilities

The complete Poplar capability set.

These are the exact actions your AI can choose when you ask it to work with Poplar.

Capability set01 / 03

01—04

4 capabilities in this set.

Part of 11 available through Poplar.

  1. 01 Capability

    Report transaction

    Send customer order data back to Poplar for attribution tracking. This lets you see the real ROI of your physical mail.

  2. 02 Capability

    Trigger physical mailer

    Send a postcard or letter to a recipient using a specific campaign ID. This is the core action for your physical outreach.

  3. 03 Capability

    Add to audience

    Put a new person onto one of your existing mailing lists. This keeps your audience data current and ready for use.

  4. 04 Capability

    Add to suppression list

    Add a name to your global Do Not Mail list to stay compliant. It ensures you never mail someone who opted out.

Capability set02 / 03

05—08

4 capabilities in this set.

Part of 11 available through Poplar.

  1. 05 Capability

    Get api profile

    View the basic details of your connected account. Use this to confirm your connection is active and correct.

  2. 06 Capability

    Get mailer status

    Check where a specific postcard or letter is in the production process. This helps you stay on top of your delivery timeline.

  3. 07 Capability

    List audiences

    See every mailing list currently saved in your Poplar account. Use this to identify the right groups for your next campaign.

  4. 08 Capability

    List billing history

    Pull up your past invoices and billing data. This keeps your marketing spend organized in one place.

Capability set03 / 03

09—11

3 capabilities in this set.

Part of 11 available through Poplar.

  1. 09 Capability

    List marketing campaigns

    View all your active and past direct mail campaigns. It's the fastest way to see what's currently in flight.

  2. 10 Capability

    List mail creatives

    Browse all the different designs and layouts you have uploaded. You can pick the right creative for your next mailer easily.

  3. 11 Capability

    Standardize us address

    Clean and verify a US mailing address to ensure it's deliverable. This prevents wasted postage on bad data.

Set up in minutes

One URL. Then ask Poplar to work.

Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use Poplar from the conversation.

Choose your client

Live preview
Advanced clients IDE · CLI

Claude · Web + desktop

Official guide ↗

Connector URL · ready to paste

Streamable HTTP
https://edge.vinkius.com/vk_preview_wjdR2dT38sZaHT3kHkl8b02xmhEnARQ2SQFjEIIE/mcp
  1. Step 01

    Open Connectors

    In Claude Web or Claude Desktop, open Settings and choose Connectors.

  2. Step 02

    Add the URL

    Choose Add custom connector, name it Poplar, and paste the URL above.

  3. Step 03

    Turn it on in chat

    Select +, open Connectors, and enable Poplar for the conversation.

Where the request belongs

Work Poplar can move forward.

Built around the request

This is for marketing teams who need to bridge the gap between digital CRM data and physical mail without the manual overhead of spreadsheet management.

01

Growth Marketer

They use this to send high-touch physical follow-ups to VIP leads or abandoned carts without manual data entry.

02

Retention Manager

They use this to trigger win-back postcards to churning customers directly from their existing CRM flows.

03

E-commerce Owner

They use this to report transactions back to Poplar to see if their direct mail spend is actually driving sales.

Build the capability set

Add more capabilities.

Each Connector adds new actions and data without changing how you work.

Browse Connectors
MailboxPower logo
01 9 capabilities

MailboxPower

Delight contacts with personalized physical gifts, greeting cards, and direct mail sent automatically from your CRM.

View Connector
Mailingwork logo
02 10 capabilities

Mailingwork

Execute professional email marketing campaigns with advanced segmentation, A/B testing, and GDPR-compliant list management.

View Connector
IgnitePOST logo
03 10 capabilities

IgnitePOST

Manage hand-written note orders and outreach campaigns via IgnitePOST API.

View Connector
Woodpecker logo
04 8 capabilities

Woodpecker

Equip your AI agent with direct access to Woodpecker. manage cold email sequences, track prospect engagement, and monitor deliverability without opening the Woodpecker platform.

View Connector
Stannp logo
05 11 capabilities

Stannp

Automate direct mail and physical letters via Stannp. manage letters, postcards, and campaigns directly from any AI agent.

View Connector
Drip logo
06 12 capabilities

Drip

Manage subscribers, campaigns, and events in Drip via your AI Agent.

View Connector

Bring your own AI

Change the model, client or framework. Keep Poplar connected.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
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Before you connect

Questions about Poplar.

The practical details behind the request, access and result.

Can I send postcards with the Poplar MCP?

Yes, you can trigger postcards or letters to specific recipients directly through your AI agent by providing a campaign ID and the recipient's details.

How does the Poplar MCP handle messy addresses?

The Connector includes a dedicated capability to clean and verify US mailing addresses. It formats them into the correct USPS standard so your mail actually gets delivered.

Can I track my ROI with the Poplar MCP?

Yes, you can report customer transactions back to Poplar through your agent. This allows you to see which mailers are actually driving revenue.

How do I manage my mailing lists using the Poplar MCP?

You can ask your agent to list all your current audiences, view specific members, or add new people to your mailing lists using simple voice or text commands.

Is the Poplar MCP good for e-commerce?

It's excellent for e-commerce because it lets you connect your sales data to your physical mail campaigns, helping you see which mailers drive the most orders.

Can I see my billing history through the Poplar MCP?

Yes, you can ask your agent to pull up your past invoices and billing data from your Poplar account at any time.

How do I get my Poplar Access Token?

Log in to your Poplar account and navigate to the API Settings or Developer section. You will find your Access Token there. Use a Test Token for development and a Production Token for live mailings.

Can I standardize non-US addresses?

No, Poplar's address standardization service is specifically designed for US addresses only. For international mailing, ensure your addresses are pre-formatted correctly.

How can I check if a mailer has been delivered?

Use the get_mailer_status capability with the unique mailer ID. It will return the current status, including production phases and the final USPS delivery confirmation when available.

Is the integration secure for customer addresses?

Absolutely. The integration uses official Poplar Bearer tokens over HTTPS. Your credentials and customer data are encrypted and stored securely within the Vinkius Cloud infrastructure.

One connection away

Give your agent a direct line to Poplar.

Connect Poplar once. Keep it beside 5,900+ managed Connectors when the next task needs more.

Explore every Connector No credit card required · Free tier available