01
Multi-product orchestration
Each project keeps its own ICP, leads, and campaign context. PortKnot keeps them separate but tied together in one dashboard, so drafts stay specific to that product — not a generic template.
Built for solo founders running 2–5 B2B products
The outbound operating system for multi-product founders.
Keep each product's ICP, campaigns, and replies separate. Handle manual LinkedIn tasks, capture signals, and send approved email from one calm command center. Every send waits for your approval. No spam. Just intent.
7-day free trial · No credit card required
Human approval on every send
Built for indie hackers and bootstrapped founders
Northwind
Kite
Loopwork
Formly
Hatch
The problem
Managing outbound for multiple products shouldn't mean juggling four tools.
You run 2–5 products. You don't have time to copy-paste templates, chase replies across inboxes, or pay $265/month for four tools that still don't share context. You need one system that keeps your products separate — and your workflow unified.
4 logins
4 bills
No shared product context
The solution
One customer. Every product.
Separate products, ICPs, and campaigns — connected by one shared customer graph and one approval layer.
02
AI drafts. You pull the strings.
Outbound email starts as an editable draft. AI drafts from that product's ICP; nothing goes out until you click Approve. You see exactly what will be sent, to whom, and why. No black-box automation.
03
No loose ends. Ever.
Three-step sequences per product, timed to your cadence. You approve each step before it enters the queue. When someone replies, the system stops the remaining sequence and opens the thread in Inbox. AI can draft a response; you edit it and click Send reply.
The multi-product view
One customer. Three products. One clear thread.
The same person can appear in more than one product. PortKnot shows the overlap, which product owns the reply, and which product has gone quiet — without turning your workspace into another CRM.
Reply by product
Shared customers
Quiet products
AR
Example view
Alex Rivera
alex@acme.com · customer across 3 products
Northwind CRM
Replied · Step 2
Kite Analytics
Interested · Inbox
Formly
No activity · 21 days
How it works
From zero to sent in minutes.
Build the list, approve each draft, schedule the follow-ups. Every product keeps its own context. Approved steps send on time; a reply stops the rest.
-
Step 01
Build your list — no data credits.
Import CSV, JSON, or pasted emails — or crawl company URLs. For URLs, PortKnot reads
/contact,/about,/teamand extracts business emails from page source. Every address is MX-verified. -
Step 02
Draft with AI.
AI drafts each step from the project's ICP, tone, and pain points. Edit every word before it enters the queue.
-
Step 03
You approve.
Review every email before it goes out. Approve, edit, or reject. Nothing sends without your click.
-
Step 04
Orchestrate follow-ups.
Approved email steps can be sent manually or scheduled. On Pro, LinkedIn steps become manual tasks. A reply stops the remaining sequence and opens the thread in Inbox.
Fit check
Built narrow. On purpose.
PortKnot is a tool for a specific kind of founder. Here's the honest version.
It's for you if
Sweet spot: 2–5 products
- You run 2–5 B2B products (SaaS, physical goods, or productized services).
- You do your own sales and outreach.
- You want AI speed but human control.
- You're paying $265/month for four disconnected tools and still can't tell which product a reply belongs to.
It's not for you if
No hard feelings
- You need agency workspaces and white-label client reporting.
- You want a fully autonomous AI that sends without review.
- You need a 10-person SDR org with enterprise controls.
The difference
How PortKnot differs from Instantly and Apollo.
Most tools are built for one brand sending at volume. PortKnot is built for operators sending across many brands with intent.
Swipe to compare all four tools
| Feature | Instantly | Smartlead | Apollo | PortKnot |
|---|---|---|---|---|
| Product-level orchestration | No | No | No | Yes |
| Approval-first by default | Optional | Optional | No | Core feature |
| AI drafts with product context | No | No | No | Yes |
| Reply detection stops sequence | Yes | Yes | No | Yes |
| Cross-product customer view | No | No | No | Yes |
| Email crawl + verify | Data credits | Verified add-on | Credit DB | Yes Included (No credits) |
| Data source | Credit database | Verified add-on | Credit database | Crawl any URL |
| Est. data cost / 1k emails * | ~$31–60 | ~$29–30 | ~$20–26 | ~$3* our crawl cost |
| Native LinkedIn tasks + email | No | No | No | YesPro only · tasks |
| Product-level signal ingestion | No | No | No | YesYes |
Comparison based on published self-serve plans, October 2026. Cost estimates exclude base subscriptions and sending; see the data math for assumptions.
The math behind $12 and $39
Most tools charge you twice.
Once for the software. Again for the data. PortKnot crawls and verifies the emails you actually need — so you're not buying a database you'll never finish.
Published list prices, October 2026. Estimates, not quotes.
| Platform | Data model | Est. data cost / 1k emailsCost / 1k |
|---|---|---|
| Apollo Basic | Credit-based database | ~$20–26 |
| Smartlead | Verified prospect add-on | ~$29–30 |
| Instantly | Credit-based database | ~$31–60 |
| PortKnot | Crawl any URL + MX verify | ~$3* our crawl cost · included |
*PortKnot's ~$3 is our internal crawl-cost target per 1,000 pages, not a customer fee or a measured per-email price. One page can yield zero or several emails. Competitor figures are their published data rates, excluding base subscriptions and sending. (What is MX? We check the domain's Mail Exchange records to ensure the email address can actually receive mail, preventing bounces before they happen.)
The typical 4-tool stack
Four tools. Four bills.
Monthly total
$265/mo
- Instantly Growth · sending + sequences
- $49
- Apollo Basic · contact database
- $65
- Verifier · email checks
- $39
- LinkedIn automation · manual tasks
- $99
- Usage / overage
- ~$13
4 logins
4 bills
No shared product context
PortKnot Solo
One workspace. One bill.
Monthly total at 3k sends
$12/mo
- PortKnot Solo · 3 products
- $12
- Resend · up to 3,000 sends/mo
- $0
- Crawl + MX verify
- Included
- Approvals + reply inbox
- Included
1 login
1 bill
Shared context
The gap at a glance
The four-tool stack costs 22× more. At 3k sends, $265 → $12: you keep $253/mo.
3k sends$12
95.5%lower
vs $265 stack
22.1× less$253 saved
10k sends$32
87.9%lower
vs $265 stack
8.3× less$233 savedSolo + Resend Pro
50k sends$32
87.9%lower
vs $265 stack
8.3× less$233 savedSolo + Resend Pro
Comparison basis. The $265 stack is held at its entry price so the difference is visible. At 10k and 50k sends, the lowest-cost path is Solo ($12) + Resend Pro ($20/mo, covers up to 50k). Pro is $39 and includes 10k managed sends plus unlimited projects and 3 seats; it is a feature upgrade, not the cheapest sending-only comparison. Vendor limits and your actual stack will vary.
The bottom line
We're not cheaper because we cut corners. We're cheaper because we don't sell you a database you don't need.
Method & assumptions
Published self-serve list prices on 24 Oct 2026, before tax. Estimates, not quotes.
Apollo Basic $49/mo annual or $65 monthly, 30,000 email credits/yr; the comparison uses the $65 monthly rate. Smartlead verified add-on $59/mo for 2,000. Instantly data credits $9/150 to $47/1,500. Resend free up to 3,000 emails/mo; Pro $20/mo for 50,000.
PortKnot's ~$3 is an internal crawl-cost target per 1,000 pages, not a customer fee or a measured per-email price. Vendor limits and your actual stack will vary.
Sources
Prices change. This is a directional comparison, not a quote.
Pricing
Start with a 7-day free trial.
Solo $12. Pro $39. No credit card required.
Trial
No cardTest the full workflow before you pay.
$0
/7 days
then $12/month · Full access. No credit card.
Start free trialTrial includes
- 3 products
- 50 test emails
- 200 crawl URLs
- 10 AI generations
- No credit card required
Hard stops: 50 emails, 200 crawl URLs, 10 AI generations. No daily reset; upgrade to continue.
Start here
Solo
For youFor operators running a few products.
$12
/month
$120/year · billed monthly or yearly
Start with Solo- 3 products
- Unlimited sends with BYO Resend
- 2,000 crawl URLs/month
- Reply-to routing per lead
- Email only · 500 Signals/mo
- CSV import & MX verification
Start with a 7-day free trial. No card required.
Pro
ScaleMulti-channel outbound for operators ready to scale.
$39
/month
$390/year · billed monthly or yearly
Start with Pro- Unlimited products
- 10,000 managed sends/month
- 5,000 crawl URLs/month
- 3 senders & 3 seats
- Inbox rotation
- Multi-channel sequences (LinkedIn Tasks)
- 5,000 Signals/mo · Signal webhooks
- Priority support & early access
For 4–5 active products or high-volume outbound.
7-day free trial, no card required
Cancel anytime
Running more than 5 products? Portfolio is in Phase 2
Max
Founder, PortKnot
Built from the trenches: one founder, a few products, and a refusal to let a warm lead go cold.
Solo founder · 2–5 products
From the founder
I built PortKnot because I needed it myself.
Like many of you, I'm a solo founder running multiple products at once. And like many of you, I learned the hard way that the path from 0 to 100 paying customers is one of the loneliest, most brutal stretches of any founder's journey. There's no playbook. No team to lean on. No one to catch you when a follow-up slips through and a warm lead goes cold.
I didn't set out to build a SaaS. I built an internal tool for myself — one that let me run outbound for each product without losing my mind, without spamming people, and without letting a single reply get buried. It worked. I used it every day. And after a while, a few founders asked if they could use it too.
That's when PortKnot became a company.
Here's what I believe, deep in my bones:
Founders back founders.
I know what it feels like to be on month three of outbound with no replies, wondering if the whole thing is broken. I know what it feels like to spend $50 on a tool you can't afford, hoping it's the one that finally works. I know what it feels like to be told "you just need to be more consistent" by someone who's never had to be.
So I built PortKnot to be the tool I wished existed when I was starting out — one that respects your budget, protects your reputation, and does the boring work of keeping every loose end tied.
My belief is simple:
When you succeed, PortKnot succeeds. Not the other way around.
That's why the pricing is what it is. That's why there's a real 7-day free trial. That's why I'm not chasing enterprise contracts or VC-scale growth. I'm building for the founder who's still in the trenches — the one who's doing this alone, the one who needs a win.
If you're there right now, I see you. And PortKnot was built for you.
— Max, Founder, PortKnot
No demos · No contracts · No black-box AI
FAQ
Questions, tied off.
Everything you need to know before your first approved send. Still curious? We answer every email ourselves.
hello@portknot.com
No demos. No contracts. No black-box AI.
No. Every email starts as an AI draft and waits for your approval. You can send an approved email manually or schedule it. Automatic follow-ups only run for steps you approved, and a reply stops the remaining schedule.
Tying your outbound together
Every product. One approval queue. Zero loose ends.
Start with a 7-day free trial, connect your first product, and send a sequence you actually wrote the final word on.
No credit card required · Cancel anytime