TL;DR
- Start with Sales Navigator Core for a defined market of agencies or independent consultants. Activity prioritises candidates; a service page establishes business fit.
- Use PhantomBuster for selected post engagement, Clay for repeatable qualification, and Common Room for agencies engaging with your own company page within a broader signal programme.
- Trigify is retiring its standalone platform and is no longer a sensible new purchase.
- The 200-candidate example costs $14.22 per approved handoff with monthly Core, review labour and assumed enrichment spend. Add automation when the savings or additional qualified accounts justify it.
Discovery versus evidence of fit
A consultant commenting on a HubSpot implementation post is a promising research lead. The comment does not tell you whether they run an independent practice, work inside a software company or advise the customer you want to reach. An agency founder liking the same post can be useful without having an immediate buying need.
Finding agencies has two jobs: discover relevant people, then establish the business behind each person. Define service category, geography, headcount, customer type and exclusions first. Keep agencies and independent consultants as separate segments: a ten-person implementation firm and a solo specialist have different capacity and buying processes.
This guide focuses on building that qualified market list, rather than choosing an outreach sequencer. The recommendations are editorial assessments of documented capabilities, not comparative product-test results. Pricing uses official US-dollar bases checked on 30 September 2026; annual equivalents are distinct from monthly subscriptions.
Four tools compared
| Tool | Best discovery contribution | Published pricing basis |
|---|---|---|
| Sales Navigator | Define a market and inspect professional context | Core from $119.99/month per licence or $1,079.88/year |
| PhantomBuster | Collect people engaging with selected posts | Start $56/month equivalent, $672 billed annually |
| Clay | Research websites, enrich people and classify accounts | Free for a small experiment; Launch published starting base $185/month |
| Common Room | Prioritise your company-page audience in a wider signal system | Essential $2,500/month, billed annually; five seats |
These are different layers. Sales Navigator is the first-party search choice, PhantomBuster the extraction choice, Clay the qualification choice and Common Room the broader audience-intelligence choice. Most small agency lists do not need all four.
LinkedIn Sales Navigator: best starting point for a defined market
Choose it when your buyer definition is clearer than your list of relevant posts. Combine geography, role, company size and keywords, save promising people and inspect their current business. The plan comparison documents more than 50 search filters and alerts for job changes and new content. Core starts at $119.99 monthly or $1,079.88 annually per licence. Advanced starts at $159.99 monthly or $1,799.88 annually; Advanced Plus is the custom-priced CRM integration tier. LinkedIn plans and pricing.
For one researcher, Core is the default. Upgrade when collaboration or integration materially shortens the handoff. A saved lead and a CSV export are different things: this recommendation assumes research in Sales Navigator and a separately maintained qualification record, rather than promising bulk export.
Its limitation is classification. A marketing-services category includes agencies, solo practitioners and unrelated businesses. Read the service page before assigning the account. It is a poor standalone choice when you primarily need everyone who commented on a particular third-party post.
PhantomBuster: best for selected post engagement
Choose it when you already know which posts attract your market. Its documented engagement workflow accepts post URLs, profile or company pages, and LinkedIn post search URLs. It uses a LinkedIn session and collects people who liked or commented. The vendor also points to its Post Commenter and Liker Scraper for control over extraction instead of the combined extraction-and-outreach workflow. Retain that control and qualify businesses before outreach. Post-engagement workflow.
Start includes five automation slots, 20 monthly execution hours, 500 email credits and unlimited exports at $672 annually, equivalent to $56 monthly. Grow includes 15 slots, 80 hours and 2,500 email credits at $1,536 annually, equivalent to $128 monthly. Slots measure concurrent automations; execution time is consumed while jobs run. A subscription is not unlimited collection capacity. PhantomBuster pricing.
Sessions, collection jobs and duplicate outputs need an owner. Vendor descriptions of safe limits do not establish LinkedIn permission: LinkedIn's agreement prohibits scraping and automated access of the kinds described there. First-party research is the better fit when preserving account access matters more than extraction speed. LinkedIn User Agreement.
Do not buy more capacity simply because a post has many reactions. Fifty comments on a specialist implementation discussion can produce more relevant agencies than thousands of general-interest likes.
Clay: best for turning candidates into classified businesses
Clay belongs after discovery. Supply stable profile URLs, company domains and activity context, then research websites into structured fields: service, target customer and supporting page. Keep the agency classification alongside its evidence. This avoids passing an unsupported AI label to sales.
Free includes 100 Data Credits and 500 Actions monthly, with a 200-row table limit. The published FAQ describes Launch from $185 monthly and Growth from $495 monthly; Growth adds CRM sync, HTTP integrations and webhook automation. The calculator separates Actions and Data Credits and varies the configuration, so these are starting bases rather than unlimited research budgets. Clay plans.
Actions pay for platform operations; Data Credits buy provider data and AI work. Using your own provider keys changes the data charge but still consumes Actions. Website research, email enrichment and exporting records have different usage costs, so there is no universal price per lead. Clay billing units.
Use Free to establish a classification rule on a small set, Launch for recurring research and supported campaign handoff, or Growth for native CRM automation. Clay is excessive for twenty known agencies that a researcher can classify quickly. It also cannot recover a company identity that the input never supplied: a name without a stable profile or domain remains a weak starting point.
Common Room: best for an existing company-page audience
Its LinkedIn integration connects your company page rather than personal profiles, creating contacts and activity from supported page posts, comments and reactions, with an initial 30-day history. It fits content that already attracts agencies; it is not a crawler for every competitor's audience. LinkedIn integration guide.
Essential costs $2,500 monthly billed annually, or $30,000 a year. It includes five seats, up to 100,000 contacts, 5,000 RoomieAI research credits and 2,500 Prospector credits. Advanced and Enterprise are custom-priced. CRM, sales engagement and Slack connections are included across plans. Common Room pricing.
Buy it for a signal programme serving several teams, with agency discovery reusing that infrastructure. A small standalone list cannot justify the same spend. Your existing audience and the broader agency market are different pools, so company-page monitoring does not replace market search.
Why Trigify is no longer a new-purchase recommendation
Trigify announced on 23 September 2026 that its team is joining HubSpot and the standalone platform is being retired. Standard customer access, integrations and monitoring end on 22 October 2026; the product and accounts will not continue inside HubSpot. Existing users can preserve records during the transition, but new workflows should use an ongoing source above. Trigify announcement and transition FAQ.
Example filters and qualification record
Suppose you sell delivery capacity to UK HubSpot implementation partners. Build two segments: agencies with 2–50 employees and independent consultants. Search founder, partner, owner and implementation-related roles, then inspect the current business. Recent posts or substantive comments about migration, integrations or delivery capacity help prioritise candidates without replacing company criteria.
Exclude software vendors, recruiters, investors and unrelated creative-service businesses. A solo practice can qualify through its principal's current profile, business website and defined consulting offer even without a team page. Conversely, someone calling themselves a consultant is insufficient when their current employer is a large software company.
| Field | Example editorial record |
|---|---|
| Identity | Partner profile URL; matching company domain |
| Service | HubSpot implementation page and supporting passage |
| Segment | Agency; target headcount band 2–50 |
| Geography | UK service coverage stated on website |
| Activity | Public migration comment; original post URL and observed date |
| Handoff | Current role, work-email status, CRM account ID |
| Decision | Approved business; activity supports relevance, not declared purchase intent |
Deduplicate businesses by domain while retaining several useful contacts. Separate website-derived classification from activity-derived timing. The comment raises priority; the service page establishes account fit. Attach both to the approved account so its owner does not repeat the research.
Handoff cost and the automation decision
Retain the 200-candidate scenario: 80 pass service and geography rules, 60 resolve to a current work contact and 45 are approved for CRM handoff. These are planning assumptions, not measured conversion rates. Reviewing each candidate for three minutes takes ten hours. At $50 an hour, labour costs $500. Assume $0.10 of enrichment and verification per candidate, adding $20; that is an illustrative budget, not a vendor quote.
One monthly Core licence gives $500 + $20 + $119.99 = $639.99, or $14.22 per approved handoff, before tax, CRM and sending costs. Annual Core commits $1,079.88 up front. Its $89.99 monthly equivalent reduces the allocated subtotal to $609.99, or $13.56 per handoff, but is not a cancellable $89.99 monthly subscription.
Adding Clay's published $185 Launch starting base raises the planning subtotal to $824.99 before extra configured capacity. At $50 an hour, it must save 3.7 hours, about 67 seconds per candidate, to offset that base across 200 records. If it saves ninety seconds per record without reducing classification quality, it saves five hours worth $250, exceeding the base by $65.
PhantomBuster Start adds a $56 monthly allocation with a $672 annual commitment. Saving 1.12 researcher hours monthly offsets that allocation, though collection and classification are different jobs. Common Room adds $2,500 monthly and a $30,000 annual commitment: at 45 handoffs its allocation alone is $55.56 per handoff. A broader team can distribute that spend across other uses; the small list cannot carry its purchase case alone.
Measure accepted businesses, false agency classifications, duplicates and review minutes per approved account. If most rejects are in-house employees, improve the segment rule. If most lack a matching domain, improve identity resolution. Neither problem is solved merely by collecting more likes.
Which stack to buy
For your first agency list, choose Sales Navigator Core plus a qualification sheet. Add Clay when repeating website research meets the savings threshold above. For known specialist posts, choose PhantomBuster plus qualification, with account-access implications understood; Sales Navigator is useful but not mandatory for every extraction job. For agencies engaging with your company page inside an established multi-source programme, use Common Room and reuse its account context.
The signal-based outbound playbook develops the next step: turning relevant timing into outreach. The buying decision here is earlier: find the right businesses, establish fit and hand over useful evidence.
FAQ
Can Sales Navigator identify every agency?
No. Business descriptions vary, and consultants may work independently or inside another company. It is the strongest first-party starting point here, while service-page research makes its candidates into a useful account list.
Is a LinkedIn like a buying signal?
Usually it is weak context. A substantive comment about a relevant implementation problem is a better research reason. Prioritise it once account fit is established, without claiming the person is shopping for your service merely because they engaged.
Does Common Room monitor competitors' personal posts?
Its documented LinkedIn integration connects your company page rather than personal profiles. Use it for that audience and wider account intelligence. Selected third-party engagement is the extraction use case for PhantomBuster in this comparison.
Is Clay necessary to classify consultants?
A small known list is often quicker to research manually. Clay becomes useful when the same website and contact checks recur across hundreds of candidates. Retain evidence URLs so sales gets a defensible segment and actionable context.
Should Trigify users move to HubSpot for the same product?
The retirement announcement says Trigify's product and accounts will not continue within HubSpot. Preserve activity records and rebuild their handoff around an ongoing source, choosing according to audience scope rather than the acquisition name.
