Penn and Felix Frank - GTM Engineers

30/07/2025

Outbound Super Stack

Every tool you need to dominate your market (and more).

1️⃣. Lead Sourcing – Every source for leads, from cold databases to intent signals to warm intros. Maximise your sources to maximise your coverage.

B2B Database
→ Apollo
→ DiscoLike

Website Visitors
→ leadpipe.com
→ RB2B

Technographic Data
→ TheirStack
→ BuiltWith

Intent Data
→ Vector 👻
→ Demandbase

Warm Intro
→ The Swarm 🔆
→ HiFive 🙌

Social Signals
→ Trigify.io
→ Letterdrop

Job Changes
→ LoneScale
→ Champify

Hiring Alerts
→ TheirStack
→ Apify

Product Signals
→ Pocus
→ MadKudu

Scrapers
→ Bardeen
→ Apify

2️⃣. Enrichment – Every tool for enriching your leads with contact data, personalisation data points, and AI generated copy.

Enrichment Tables
→ Clay
→ Persana AI

Mobile Data
→ Kaspr
→ FullEnrich

Mobile Validation
→ TitanX
→ SureConnect

Email Finder
→ LeadMagic
→ Prospeo.io

Email Validation
→ BounceBan (Verify risky emails without sending messages)
→ ZeroBounce

Enrichment API
→ Captain Data
→ ScrapIn

AI Copy
→ Octave
→ Twain

3️⃣. Engagement – Every channel for engaging prospects. Some open emails, others answer the phone. Maximise channels to maximise engagement.

Cold Email
→ Smartlead
→ Instantly.ai

Inboxes
→ Premium Inboxes
→ ScaledMail

LinkedIn Outreach
→ GetSales.io
→ Prosp.ai

Twitter Outreach
→ Drippi
→ TweetDM

Cold Calling
→ Salesfinity
→ FrontSpin

Multi-Channel
→ Reply
→ Lemlist

Gifting
→ Sendoso
→ Reachdesk

What did I miss? 👇

26/07/2025

Playing around with Guidde last weekend.

Useful for saas sales reps to demo features at scale. Bigger use case for Success & Support teams though.

25/07/2025

The 2025 Sales Engagement Landscape

Ranking the top 4 tools in each category (in order) 👇

These represent the different channels you can use to “engage” your prospects:

Email → Tools built specifically for high‑volume cold email, optimised for scale, deliverability, and campaign management

1. Smartlead
2. Instantly.ai
3. Saleshandy
4. EmailBison

LinkedIn → Automation platforms for LinkedIn outreach, supporting multiple sender profiles and varied touchpoints (connects, DMs, post‑likes, etc.)

1. GetSales.io
2. HeyReach.io
3. Expandi.io
4. MeetAlfred.com

Sales Engagement → Enterprise‑grade platforms with robust reporting to engage prospects via email (primary domain only) and phone

1. Outreach
2. Salesloft
3. Clari Groove
4. Gong

Multi-Channel → End-to-end engagement across 4+ channels, typically email, LinkedIn, phone, WhatsApp, and SMS

1. Reply
2. lemlist
3. Outplay
4. LGM

Engage + Data → Sales engagement platforms with built-in prospecting databases for an all-in-one solution

1. Apollo
2. Amplemarket
3. Snov.io
4. ZELIQ

Sales Dialer → Cloud‑based phone systems that auto‑dial prospects, log and transcribe every call, and sync seamlessly with your CRM

1. FrontSpin
2. PhoneBurner
3. Dialpad
4. Trellus (YC W22)

Parallel Dialer → Dialers that place multiple simultaneous calls per rep and connect the agent to the first answered line for maximum contact rates

1. Salesfinity
2. Orum 🥇
3. Nooks
4. Quack 🦆

Postal Mail Outreach → Tools to automate, personalised and scalable postal mail outreach

1. Scribeless
2. Letter Friend
3. Handwrytten
4. Poplar

Prospect Gifting → Tools to facilitate and automate delivery of physical and e-gifts to prospects at scale

1. Sendoso
2. Postal
3. Reachdesk
4. Alyce

Website Live Chat → Platforms to engage your website visitors in real-time via embedded website chat bots

1. Qualified
2. Rep.ai
3. Drift
4. Warmly

As you craft your 2025 engagement stack, lean into the channels and tools that align with your team’s goals and customer preferences.

Big or small TAM?

Prospects active on LinkedIn?

Enterprise or SMB?

Map your market first, then build your stack from there.

StackOptimise ⚙

25/07/2025

12Words I like to use in cold outreach in 2025:

1. Basically
2. A bit
3. Stuff
4. Thing
5. Nice
6. Cool
7. Maybe
8. Not sure if
9. Might be
10. Bit of context -
11. Easy
12. Helps

We're in a world where everyone's using AI to write their outreach. So it all look the same and sounds too polished.

Basic language is the edge.

🤖 Prompt to humanise your cold email:

You are a cold email copywriter tasked with making this message radically simple and human. Rewrite the email using plain, everyday language - as if you're explaining it to a smart friend over coffee.

Rules:
No jargon, buzzwords, or formalities
Use short words, short sentences
Keep tone casual, clear, and confident
Prioritise clarity over cleverness
Make the email comprehensible to a 10 year old
Make sure it still gets the point across and drives a reply

Here’s the email to simplify: {{Insert cold email here}}

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Find our FREE Cold Outreach Phrasebook here:

This link will take you to a page that’s not on LinkedIn

24/07/2025

Still the most underrated B2B growth strategy:

Employee-first content.

We're building a company where everyone gets to grow, not just the business.

So we built a full creator ecosystem inside the company:

Everyone is enabled:
1️⃣ Knowledge base for content material & ideas
2️⃣ AI tools to draft and optimise LinkedIn posts
3️⃣ Unlimited canva designs from our in-house expert m

Everyone is rewarded:
💰 $100 bonus for posting every day
🏆 $250 bonus for the highest-performing post
🧲 $2,000 bonus for any referral that converts

Yes, it builds brand awareness - but it also builds people. Confidence. Credibility. Career capital.

And when your company becomes the vehicle for personal growth, you retain talent AND maximise business growth.

23/07/2025

Effective personalisation can really improve your outreach results.

Here's a couple of our favourite strategies right now 👇

Naturally, we’re building these in Clay and scaling them across hundreds of thousands of leads every month.

Which is also important...

The best strategies are also the most scalable.

Existing Role Trigger:
– Detect if a company already employs a certain job title
– The more niche the hotter the signal
– E.g a company with a GTM Engineer tells me a TON about what they do

Missing Role Trigger:
– Flag companies that lack a key role (e.g., no CFO on LinkedIn)
– Perfect for outreach around outsourced solutions: “I searched far and wide for your CFO on LinkedIn but came up zilch. Does this mean...”

Case Studies:
– Pull public case studies from their website and reference with relevance
– "Pretty sweet case study you landed their with Tesla. Have you thought about..."

Competitor References:
– Name-drop their main rivals to create urgency and social proof
– “I saw Company X just rolled out [feature], here’s how you can stay ahead…”

New Product Announcements
– Track press releases, roadmap updates, or product launches
– Opens the door for solution-based pitches aligned with their latest priorities

Mission & Values Alignment
– Highlight their stated mission or values in your messaging
– Builds rapport and positions you as more than “just another vendor"

One common thread: each trigger is binary or easily discoverable online.

That makes them perfect for high-volume campaigns, and repeatable pipeline generation at scale.

What are your favourites?

P.S. We created an eBook with our best performing outreach templates → https://www.stackoptimise.com/1m-messages

StackOptimise ⚙️

Top outbound agency reveals their 35 highest-converting cold outreach messages for email, LinkedIn, and Instagram.

23/07/2025

All our copywriting secrets, packed into one ebook 📕

Battle-tested across 1M+ emails sent every month.

Here it is: https://subscribe-forms.beehiiv.com/1c597326-2dc5-4bb1-a78c-fdf7a3cdff31

22/07/2025

We released the world’s first GTM Engineering course back in March.

Here’s what happened next.

If this is your first time seeing my content, I founded an early GTM Engineering agency's with my brother Penn just under two years ago.

We were one of the very early adopters of Clay and Smartlead, and scaled to $1 M ARR in just 14 months.

It felt like stumbling onto a superpower, especially after years of manual prospecting.

So in March, we poured everything we knew into a course to teach others end-to-end GTM Engineering.

Not just cold email, not just Clay, not just automations, but the entire syllabus to become a true GTM Engineer.

Since launch we’ve:
→ Enrolled 150+ students
→ Hired two of them (shout-out Alfie and Mohamed)
→ Watched dozens sign their first clients (looking at you, Mohammed Rizwan and Rashi Gupta)
→ And most of all…received amazing feedback

Penn and I spent hours on every module.

Even when the course was “finished,” we tweaked and refined because we wanted it to be perfect.

Reading messages like “I closed my first client in week two” makes every late night worth it.

Below are some of the comments we’ve had.

Let’s go, GTM Engineers!

StackOptimise ⚙️

22/07/2025

Disney last week.
Google this week.
Who says you can't unlock Enterprise from cold email?

Both in the global top 50 by market cap.
Both booked in-person meetings via cold emial.

Enterprise is a different beast. Here's what works:

1) Optimise for "forwardability" – decisions involve layers.
2) Lead with goodwill – noisier inboxes so upfront value is critic.
3) Use senior team – use your sales leader/CEO to drive engagement.
4) Own your tone – don’t shrink because of the logo. Speak like a peer.
5) Stack social proof – bigger brands carry more risk. De-risk with evidence.

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You can find the templates we use to close the big whales here: https://lnkd.in/etpNy-yp

21/07/2025

AI is taking over every department.

Here are 6 high-impact areas, and 5 breakout tools in each.

Skim this. Save it. Share it with someone who's still catching up:

1. Sales Agents → Fully autonomous, cold email and LinkedIn outreach
- Artisan
- Valley
- 11x
- AiSDR
- Topo (YC W24)

2. AI Copywriter → Sales and marketing copywriters, trained on your offer
- Relevance AI
- Jasper
- AirOps
- Copy.ai
- Anyword

3. AI Web Scraping → Deploy intelligent agents to crawl and harvest data.
- Exa
- Airtop
- Firecrawl
- Browse AI
- Jina AI

4. AI Video Avatars → Produce human-like UGC videos at scale.
- HeyGen
- Synthesia
- Creatify AI
- Arcads AI
- Icon

5. Developer Copilots → Train, write and debug code with natural language.
- bolt.new
- Cursor
- Replit
- Lovable
- Vercel

6. Customer Service Bots → Resolve and route support tickets without human intervention.
- Intercom
- Sierra
- Pylon
- Replicant
- Parloa

AI agents are the future.

At StackOptimise ⚙️, we’re going all in.

Look out for deeper dives in our upcoming content and new service lines that put AI agents at the heart of your GTM strategy.

21/07/2025

Gong and GoHighLevel.ca are both bidding on our brand terms.

Nice bit of validation.

As that doesn't happen if no one's searching for you.

Cool to see the traction building up as we dial up our presence this year, with new products, services, resources, marketing channels, team members and functions!

20/07/2025

How to stay up with AI efficiently: