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no retainer · no deck · no "circle back"

You ship the code. We'll ship the users. Can't be bothered with marketing? Good. We'll do it. Stay in the IDE. We'll run your growth. Marketing for founders who'd rather be coding.

You vibe-coded the MVP. Now it needs users, and you'd rather ship features than learn Reddit. Pick a channel. We write the posts, run the outbound, dial the phones, ship the ads. You approve in Slack. £499/mo per channel, strategy baked in, cancel whenever.

Book a 15-min call See the channels
// our founders actually ship in
Claude Cursor Lovable v0 Replit Bolt
Founding cohort open. New agency, experienced operators. Numbers below.
the team behind costream, last 12 months

Receipts. Aggregate across the book.

Volume we've actually shipped for clients in the last year. Anonymised because NDAs, happy to walk you through specifics on the call.

3M+ cold emails sent

Warmed domains, daily deliverability checks, human-edited copy. Replies, not bounces.

// inbox.warm()
50k+ dials placed

Real humans on the phone. Meetings land in your calendar, not a "nurture sequence".

// dial.loop()
400k+ TikTok ad impressions

Paid social across the book. Weekly new creative, platform-native hooks, ruthless kill-the-losers iteration.

// tiktok.ads()

Reddit and paid-search volume available on request. Same story: real operators, at scale, since before Costream was a domain.

the channels we run

Five channels. Pick one. Or stack them.

Every one ships with a strategy doc, weekly creative and a Slack channel. Zero retainer scope-creep.

Reddit

We post like redditors because we are redditors. Native tone, subreddit-fluent, banhammer-safe.

how we run it → // reddit.native()

TikTok

Scripts that don't read like a LinkedIn post. Hooks that earn the second three seconds.

how we run it → // tiktok.hook()

Cold calling

Real humans. Real dials. Meetings land in your calendar, not a "nurture sequence".

how we run it → // dial.loop()

Cold email

Warmed domains, real personalisation, deliverability watched daily. Replies, not bounces.

how we run it → // inbox.warm()

Paid ads

Meta, TikTok, Reddit, Google. New creative weekly. One Loom per week, no 40-tab sheet.

how we run it → // ads.ship()

+ Strategy & GEO, free.

Every channel ships with a brand-voice doc and a GEO pass so ChatGPT & Perplexity cite you when buyers ask. No upsell.

// bundled.by_default()
built for

Three types of brand. No agencies need apply.

If you ship fast, sell to the internet, and refuse to hire a 12-person growth team. You're the target.

01

Vibe coders

You vibe-coded an MVP in a weekend. Consumer app, indie SaaS, B2B tool, doesn't matter. It needs users, and you'd rather keep shipping features than learn TikTok. Hand us one channel. Stay in the IDE. We bring the signups.

02

SMBs

You have real customers, not "users". You need leads, not "brand awareness". We run the outbound so you keep closing the ones already on the phone.

03

Meme brands

Your product lives on the timeline. Corporate tone kills your sales. We write in the voice your audience already speaks. Zero "hello fellow kids".

the small print, up top

What we won't do.

×

90-day onboardings. You're live in week two or we're not doing it right.

×

Retainer scope creep. £499 is one channel. Another channel is another £499. Spelled out.

×

"Hello fellow redditors" copy. Or "circle back". Or "synergies". Ever.

×

40-tab weekly reports. One Loom, one dashboard, done.

×

AI-slop first drafts. Humans edit every line that leaves here.

×

Crypto pumps, gambling, adult. We pass. You'll know on the intro call.

how it works

Kickoff in week one. Live by week two.

No 90-day onboarding. Week-one strategy doc, week-two live campaign, or we tell you we're not the fit.

01

Intro call

15 mins. We scope your vertical, ICP and goals. If we're not the right fit, we tell you.

02

Strategy week

Brand-voice doc, channel playbook, KPIs, creative pipeline, all before you pay for month two.

03

Launch

Posts go live, inboxes warm, dials start, ads publish. You approve via Slack or async Loom.

04

Iterate weekly

Weekly readout, creative refresh, list expansion. Channels compound. We don't rinse-and-repeat.

pricing

One price. One channel. No surprises.

£499 per brand per channel, per month. Stack channels if you want. Don't if you don't.

// what a managed channel usually costs you
Traditional agency retainer £4k–10k/mo
In-house growth hire £60k+/yr + equity
DIY on nights & weekends the features you won't ship
Costream, per channel £499/mo

Humans on strategy, brand voice and QA. AI operators on the grunt work (list building, first drafts, deliverability checks, ad variations). That's how the maths works.

One channel

£499/mo

Start here. Pick the channel where your ICP actually hangs out.

  • Any one of: Reddit, TikTok, Cold email, Cold calls, Paid
  • Brand-voice doc + quarterly strategy
  • GEO + SEO pass included
  • Weekly creative, weekly Loom
  • Slack channel, async replies
Book a call
founder fave

Two channels

£899/mo

Organic + outbound usually. Reddit + cold email is the quiet cheat code for B2B.

  • Any two channels, your pick
  • Creative repurposed across both
  • GEO + SEO pass included
  • Weekly creative, weekly Loom
  • Same-day Slack replies
Book a call

All five

£1,999/mo

Your whole go-to-market motion, one team. For founders who want to stop thinking about it.

  • Reddit + TikTok + Cold email + Cold calls + Paid
  • Quarterly strategy offsite
  • GEO + SEO across the stack
  • Dedicated strategist
  • Same-day Slack replies
Book a call

Month-to-month. Cancel with 14 days' notice. Ad spend billed direct to the platform. We don't mark it up.

book a call

15 mins. Zero deck. Honest answer.

Bring your ICP, current traction and messiest growth problem. We'll tell you which channel we'd run first, even if it isn't one we sell.

Can't see the calendar? Open it in a new tab →

faq

Yeah but… does this actually work?

Both. Consumer apps, games, indie SaaS, creator tools, DTC, and B2B SaaS all live here. TikTok, Reddit and paid social lean B2C. Cold email, cold calling and paid search lean B2B. Most vibe-coded launches end up on a mix. On the intro call we tell you which channel fits your product, not the other way round.
Fully managed. We write, we post, we reply, we call, we optimise. You review creative in Slack (or async Loom) and sign off on strategy every quarter. No content calendars for you to fill in.
Our operators use Claude, GPT and specialised marketing agents for the grunt work: list research, first drafts, deliverability checks, ad variations. Humans do strategy, brand voice and QA. That's how £499 buys what used to cost £4,999. You won't see AI slop in your feed. We edit every line.
GEO (Generative Engine Optimization) is how brands get cited by ChatGPT, Claude, Perplexity and Google's AI Overviews. It's SEO for the model-answered web. Every Costream channel ships GEO-ready copy, structured data and citation-friendly formatting so your brand appears when buyers ask an AI.
Our operators are natively online. We ship memes that wouldn't get flagged in a groupchat. We won't put a "hello fellow kids" post out under your brand. If you want corporate-safe, we'll tell you on the intro call.
Retainers are where agencies hide scope creep. We charge per brand per channel so you know exactly what £499 buys: one channel, run end-to-end, strategy included. Want another channel? Add it. Don't like one? Drop it next month.
Yes. We happily sign NDAs and work with fintech, healthtech, B2B SaaS and regulated SMBs. We don't work with crypto-pump projects, gambling or adult.
One month. That said, organic channels (Reddit, TikTok) compound around months 2–3. We'll tell you on the intro call which channel gets you results fastest for your ICP.

One channel. Two weeks. See if we're any good.

£499/mo · month-to-month · strategy doc in your inbox by Friday

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