TAM Calculator
Turn your market into a contact list
Tell Clu who is in that market. It builds the list in People Search, then finds and verifies each work email at 1 credit per verified email.
Working a whole list? Upload the CSV to Clu. Get 14 days of Pro, free: 250 credits, 3 seats, agents, Sequences and Clu in Slack.
Start free trialTAM is the full market your product could sell into. Learn how to estimate TAM, SAM and SOM yourself, then use Clu People Search to find the decision makers in that market.
Turn the market into a contact list
Tell Clu who is in your market. It builds the list in People Search, then finds and verifies each work email at 1 credit per verified email.
The Free plan is $0 with 50 credits a month and 5 searches. Every new workspace can also try Pro free for 14 days.
- Search
- Free
- Verified work email
- 1 credit
- Phone number
- 10 credits
98% verified work emails and 85% phone numbers on our 500-lead benchmark, across 25+ providers.
A demo of Clu, our agent, doing this for a whole list. Asked: Find Heads of Data or Analytics, 2-5 years in the role, at Series C+ software companies with 201-1,000 people that raised in the last 12 months. US or Canada. Skip HubSpot customers. Verify their emails. Clu runs the tools, asks for confirmation before spending credits (Find work emails for 25 leads on Data leaders, Series C+, 25 credits), fills the list row by row and reports: 25 leads, 24 verified emails. One is a catch-all, so I marked it risky.
10,000+ users, from founders to full sales teams
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The Clu Chrome extension finds the verified email and phone number for the LinkedIn profile you have open, in the same tab.
How to calculate TAM
A TAM calculation estimates your Total Addressable Market: the full revenue opportunity if you captured 100% of your target segment. Count the companies that fit your ICP and multiply by average annual contract value. SAM is the part you can realistically serve, and SOM is the slice you can capture in year one.
The toolTAM CalculatorRunsInside CluFree quotaAccount required
How does this tool work?
Total Addressable Market (TAM) is the total revenue opportunity available if you captured 100% of your target market. For B2B sales teams, understanding TAM helps prioritize which segments to pursue, how much to invest in outbound, and whether a market is large enough to justify a dedicated go-to-market motion.
To estimate it bottom-up, count the companies that match your ideal customer profile and multiply by your average annual contract value. SAM (Serviceable Addressable Market) is the portion you can realistically serve, and SOM (Serviceable Obtainable Market) is what you can capture in year one. Clu People Search lets you filter by title, seniority, location, industry and headcount at no credit cost, so you can see who is in the segment before you spend anything.
It then finds and verifies their work emails across 25+ providers, at 1 credit per verified email.
Who uses the TAM Calculator?
The people who run it most, and what each one runs it for.
- Sales teamsCatch a dead address before a rep spends time writing to it.
- MarketersClean a list before the campaign goes out, so bounces don't hit the sending domain.
- RecruitersConfirm a candidate's contact details are real before you reach out.
- FoundersCheck an address before you email an investor, partner or buyer.
- RevOpsKeep CRM records accurate so routing, scoring and reports hold up.
- AgenciesCheck client data before it goes into a live campaign.
What does Clu do with a whole list?
Watch a real search go from query to an enriched, validated, CRM-ready list: 36 leads, 100% contact fill, synced to HubSpot.
36 ICP leads, 100% contact fill, validated and pushed to HubSpot in one flow
Describe the job once. An agent runs it every week.
Clu turns one sentence into an agent. It searches 1B+ profiles, finds verified emails and phone numbers across 25+ providers, adds the people to your sequence and posts each run to Slack.
Weekly ICP outbound
Built by Clu from: “Every week, find 500 new people who match my ICP, get their emails and phones, and add them to Series B outbound.”
- Searched 1B+ profiles for new ICP matches500 foundPeople Search
- Ran the waterfall across 25+ providers487 emails · 412 phonesWaterfall
- Verified every email and phoneSMTP + catch-allVerification
- Added them to Series B outbound500 peopleSequences
- Posted the run to #pipelineSlackAgents
Friday 4:52 PM15 replies · 5 calls booked
Everything in the 14-day Pro trial
- Clu and agentsDescribe the job in one sentence. Clu builds the agent, runs it on a schedule or a CRM trigger and posts every run to Slack.
- People and Company SearchFind your buyers in 1B+ profiles from one sentence. Searching costs 0 credits.
- Waterfall enrichmentAsk 25+ providers in order and stop at the first verified email or phone number. 98% verified work emails and 85% phone numbers on a 500-lead benchmark.
- Email verificationRun SMTP and catch-all checks on every address before it reaches a sequence, at half a credit an email.
- ICP scoringScore every lead 0 to 100 against your ICP, with the reasons written down. The Research and Qualification skills do the digging.
- SequencesSend email from your reps' own inboxes, with call tasks. A reply stops the sequence. Sending costs 0 credits.
- CRM syncTwo-way sync with HubSpot, Salesforce and Pipedrive. Push finished lists to Outreach, Salesloft and Lemlist.
- Chrome extensionGet a verified email and phone number in one click on LinkedIn, Sales Navigator, Salesforce and HubSpot.
- MCP and APIRun the same search and waterfall from Claude or ChatGPT with 36 MCP tools, or from your own code with the REST API.
Agents that run this job
- Lookalikes of best customersFinds new companies that share your best customers' industry, size and funding stage, and the buyers at each one.
- Weekly ICP leadsEvery Monday, finds new people who match your ICP, checks their work emails and posts the verified ones in Slack.
- Account briefsWrites a short, sourced brief on each new target account every Monday and sends it to the account owner.
14 days of Pro, free: 250 credits, 3 seats, agents, Sequences and Clu in Slack. Then Free at 50 credits a month, or Starter at $49 and Pro at $89 a seat a month.
Which free email lookup tools work together?
Start from whatever you have (a name, a domain, an email or a block of text) and chain the tools until you have a verified contact.
- ICP Fit Score CalculatorHow ICP fit scoring works, and how Clu scores leads against your criteria.
- B2B Contact Findername + companyverified emailFind verified work emails by name and company, inside Clu.
- CRM Cleanup ROI CalculatorHow to put a dollar figure on what bad CRM data costs you each year.
Which paid tool does this for a whole database?
We compared the platforms that do this job for a whole database, Clu included, and say where each one falls short.
- Best sales prospecting toolsProspecting tools ranked by how fast a rep gets from an ICP to a list they can contact.
- AI sales toolsThe AI tools for each job in the sales process, from people search and enrichment to writing and call prep, with prices.
- Best B2B data providersContact, company and intent data providers grouped by the job they do, with what each one costs.
- GTM agentsWhat a GTM agent is, the 8 jobs agents run on a trigger, 11 tools with prices, and what a run costs.
Frequently asked questions
Short answers about the TAM Calculator: what it checks, what it costs and where it stops.
All free toolsWhat is TAM, SAM, and SOM?
TAM (Total Addressable Market) is the total revenue opportunity if you had 100% market share. SAM (Serviceable Addressable Market) is the portion of TAM you can realistically serve with your current product and go-to-market. SOM (Serviceable Obtainable Market) is what you can realistically capture in year one. Investors and sales leaders use these metrics to assess market opportunity and set realistic revenue targets.
How accurate is a TAM estimate?
A top-down estimate from industry averages and public market data is directional. It's useful for quick sizing, pitch decks, and planning conversations. For a tighter number, build a bottom-up model from your specific ICP criteria. Clu's People Search can help you see which contacts match your target filters.
How do I find contacts in my TAM?
After estimating your TAM, use Clu's People Search to find actual contacts matching your criteria. Filter by industry, company size, job title and geography, and Clu finds their contact details across 25+ data providers, with 98% verified work emails and 85% phone numbers on our 500-lead benchmark.
Now run it on the whole list.
Upload the CSV or describe the list you want. Clu finds, verifies and qualifies every row.
14 days of Pro, free.