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Launch a Postscript VIP keyword campaign

A VIP drop in Postscript needs three things in three places: a keyword, a segment of the people who texted it and a campaign flow to that segment.

Cotlet does it in your own Postscript account with list_keywords, create_keyword, create_segment, create_campaign and schedule_campaign, called by your AI agent, an n8n workflow or a script.

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Hosted · nothing to install or maintain

Can Postscript do this on its own?

Postscript documents this as three manual steps (checked 23 Oct 2026). The API reference lists no keyword, segment or campaign endpoint, and the official MCP server is read-only.

How you do it in Postscript today

  1. Open Acquisition > Keywords > Create Keyword and name it, for example VIPACCESS. Subscribers see the name.
  2. Optionally turn on Include coupon in reply and enter a percent or dollar amount. Without a coupon, use + Add Action under Actions to add a reply.
  3. Click Save Keyword.
  4. Open Messaging > Segments > Create Segment, pick the Keywords Triggered criterion with your keyword, and click Save Segment.
  5. Open Messaging > Create Campaign > Create Campaign Flow, choose Create a new campaign, pick the segment in the Send to subscribers in dropdown and build the flow.

How to launch a Postscript VIP keyword campaign

Prompt

Create the keyword VIPACCESS with a 15% coupon reply, a segment of everyone who texted it, and a draft campaign to that segment. Do not schedule anything yet.
  1. 01

    Check the name is free

    list_keywords reads Acquisition > Keywords. If VIPACCESS exists, the agent stops and asks, because a second keyword with the same word would confuse what subscribers text.

  2. 02

    Stop at the plan limit

    Postscript allows two keywords on lower plans. When the list already holds two and Postscript refuses a third, create_keyword returns Postscript's message and the agent reports it instead of retrying.

  3. 03

    Create the keyword

    create_keyword saves the name, the reply text and the coupon. The reply goes to every person who texts the word, so the call waits for your OK.

  4. 04

    Segment the opt-ins

    create_segment saves one Keywords Triggered criterion for that keyword, so the segment fills as people text it. Its size is 0 at first, and the agent says so.

  5. 05

    Draft the campaign

    create_campaign saves a draft to the segment and sends nothing. The agent leaves scheduling for a later run, once the segment has people in it.

What you get back

Example data

Keyword VIPACCESS created, reply with a 15% coupon
Segment "VIPACCESS opt-ins" saved, size 0 for now
Draft "VIP drop" saved to that segment
Nothing scheduled

Other ways to ask

  • Add a second keyword, VIPDEAL, and include its segment in the same draft.
  • Each Monday, report how many people joined the VIP segment and schedule the campaign once it passes 200.
  • Create the keyword with a reply and no coupon.

What Postscript allows, and what to know first

  • A keyword is a word or phrase people text to your toll-free number or short code to opt in to SMS marketing.
  • A brand needs the Growth, Professional or Enterprise plan to have more than two keywords.
  • Postscript adds a subscriber who triggers a keyword to the SMS list and sends the keyword reply after opt-in.
  • Postscript's TCPA guidance requires opt-in language that covers recurring marketing messages and says consent is not a condition of purchase.

create_keyword and schedule_campaign ask for your OK by default. To run it weekly without you, switch confirmation off for those tools in your dashboard.

Sources: Postscript Help: Create a keyword and segment for a subscriber-only drop · Postscript Help: Getting started with SMS on Postscript · Postscript Help: SMS marketing compliance overview

Call create_keyword from a script

curl

curl -X POST https://cotlet.dev/api/v1/postscript/keywords \
  -H "Authorization: Bearer $COTLET_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"keyword":"VIPACCESS","reply":"You are in! Here is 15% off, a day before the public.","coupon_type":"percent","coupon_value":15}'

Example response

{
  "keyword": "VIPACCESS",
  "reply": "You are in! Here is 15% off, a day before the public.",
  "coupon": {
    "type": "percent",
    "value": 15
  }
}

MCP: add https://cotlet.dev/mcp/v1 with the same key; the call is postscript_write → create_keyword. Example data.

Schedule it in n8n, Make, Zapier or cron

Postscript tools this automation uses

Cotlet Postscript tools used to launch a Postscript VIP keyword campaign
Tool Parameters
list_keywords search
create_keyword keyword, reply, coupon_type, coupon_value
create_segment name, criteria, include_phone_only
create_campaign name, include_segments, exclude_segments, exclude_recently_messaged, cancel_on, message
schedule_campaign campaign_id, starts_at, use_subscriber_time_zone
All 13 Postscript tools with descriptions

Frequently asked questions

Is it safe to connect Postscript to Cotlet?

Yes. You sign in to Postscript yourself, in your own Cloud Browser in the EU, and we never save your password. Your agents only get Postscript once you enable it, every background request is listed, and the browser profile is stored encrypted with AES-256-GCM, the cipher 1Password uses for its vaults. The AI model never sees a login, posts and messages wait for your OK, and Disable for agents cuts access in one click. Independent scanners grade cotlet.dev A+ on Qualys SSL Labs, securityheaders.com and Mozilla Observatory; live results are on https://cotlet.dev/security.

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