--- title: "Tech Stack Signal Detection: GTM Play in 5 Steps | Frontal" description: "Tech Stack Signal Detection is a five-step outbound play for email and LinkedIn, from “Detect the stack” to “Run the displacement sequence”. It uses BuiltWith, TheirStack, Apollo, Findymail, Clay and three more tools." url: https://frontal.so/plays/tech-stack-signal-detection updated: 2026-10-19 --- Play 29 Outbound # Tech Stack Signal Detection Tech Stack Signal Detection is a five-step outbound play for email and LinkedIn, from “Detect the stack” to “Run the displacement sequence”. It uses BuiltWith, TheirStack, Apollo, Findymail, Clay and three more tools. [Kenny Damian](https://www.linkedin.com/in/kenny-damian-90aba221a/), Co-founder & Head of GTM **Motion** Outbound **Channel** Email, LinkedIn **Steps** 5 **Tools** 8 ## The workflow [![Workflow diagram of the Tech Stack Signal Detection play in five numbered stages: detect the stack; split added vs removed; score and prioritise; source the tool owner; and run the displacement sequence.](https://frontal.so/_astro/tech-stack-signal-detection-1280.Dq53Ntt6.webp)](https://frontal.so/_astro/tech-stack-signal-detection-1280.Dq53Ntt6.webp) *[Open the diagram full size](https://frontal.so/_astro/tech-stack-signal-detection-1280.Dq53Ntt6.webp) (1280 x 1995 px)* **The diagram as text** 1. Detect the stack - **BuiltWith (site tech)**: Scans the target list for the tools each site runs. Tool: BuiltWith. - **TheirStack (stack data)**: A second read on what each company uses. Tool: TheirStack. - **Diff against the previous snapshot**. Tool: Clay. - **The change is the signal, not the state** 2. Split added vs removed - **Competitor added (they just bought)**: Tool and First seen. You are early for the renewal. - **Competitor removed (they just churned)**: Tool and Last seen. They are actively looking right now. 3. Score and prioritise - **Priority 2**: By contract length. - **Priority 1**: Open window. - **Removal outranks addition every time**. Tool: ChatGPT. 4. Source the tool owner - **Whoever owns the category (not the CEO)**: The function that runs this kind of tool, with a verified email. Find: Apollo. Email: Findymail. 5. Run the displacement sequence - **Added: renewal track**. Same shape: where the tool usually breaks, then a CTA. Lands ahead of the renewal. Send: Instantly. DM: lemlist. - **Removed: switch track**: Noticed the switch, Where it breaks at your stage and Direct CTA. Send: Instantly. DM: lemlist. - **Never knock the competitor. Describe the failure mode** - **Outcome: Displacement conversation opened** **The stack:** BuiltWith, TheirStack, Clay, ChatGPT, Apollo, Findymail, Instantly, lemlist. ## The play in five steps 1. ### Step 1: Detect the stack What a company runs, and what it just stopped running, is public. - BuiltWith and TheirStack scan the target list. - Diff each scan against the previous snapshot: the change is the signal, not the state. 2. ### Step 2: Split added vs removed These are two different conversations and should never share a sequence. - Competitor added: they just bought, so you are early for the renewal. - Competitor removed: they just churned and are actively looking. 3. ### Step 3: Score and prioritise Removal outranks addition every time. - Weight removals highest: that is an open window. - Weight additions by contract length in the category. 4. ### Step 4: Source contacts Reach the owner of the tool, not the CEO. - Identify the function that owns the category via Apollo. - Verified email via Findymail. 5. ### Step 5: Run the displacement sequence You know what they use, so be specific about where it breaks. - Noticed the switch → where that tool usually breaks at their stage → direct CTA. - LinkedIn DM in parallel. - Never name the competitor disparagingly: describe the failure mode. ## Tools used The eight tools this play names. Each links to the other plays that use it. - [BuiltWith](https://frontal.so/plays?tool=BuiltWith) - [TheirStack](https://frontal.so/plays?tool=TheirStack) - [Clay (opens in a new tab)](https://go.frontal.so/clay) [Clay](https://frontal.so/plays?tool=Clay) - [ChatGPT](https://frontal.so/plays?tool=ChatGPT) - [Apollo (opens in a new tab)](https://go.frontal.so/apollo) [Apollo](https://frontal.so/plays?tool=Apollo) - [Findymail](https://frontal.so/plays?tool=Findymail) - [Instantly (opens in a new tab)](https://go.frontal.so/instantly) [Instantly](https://frontal.so/plays?tool=Instantly) - [lemlist (opens in a new tab)](https://go.frontal.so/lemlist) [lemlist](https://frontal.so/plays?tool=lemlist) ## Related plays - Play 27 Outbound ### [Hiring Signal Monitoring](https://frontal.so/plays/hiring-signal-monitoring) 7 steps · Email, LinkedIn - [Clay (opens in a new tab)](https://go.frontal.so/clay) - [Apollo (opens in a new tab)](https://go.frontal.so/apollo) - +3 more - Play 19 Inbound · Outbound ### [Multi-Thread Inbound Leads](https://frontal.so/plays/multi-thread-inbound-leads) 9 steps · Email, LinkedIn - [Clay (opens in a new tab)](https://go.frontal.so/clay) - [Apollo (opens in a new tab)](https://go.frontal.so/apollo) - [lemlist (opens in a new tab)](https://go.frontal.so/lemlist) - [Instantly (opens in a new tab)](https://go.frontal.so/instantly) - +2 more - Play 28 Outbound ### [Funding Signal Scraping](https://frontal.so/plays/funding-signal-scraping) 6 steps · Email, LinkedIn - [Clay (opens in a new tab)](https://go.frontal.so/clay) - [Apollo (opens in a new tab)](https://go.frontal.so/apollo) - +4 more [All GTM plays](https://frontal.so/plays) ## Have us run this play Tell us what you’re trying to hit this quarter, and we’ll suggest where to start. 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