ContactOut vs Seamless.AI: Data Enrichment Tool Comparison
Compare ContactOut and Seamless.AI side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
ContactOut publishes Email at $49 a month per seat for 300 exports and Email and Phone at $99 for 600, above a free tier metered daily. Seamless.AI publishes only a free plan of 1 user and 50 credits. Pick ContactOut for browser-side prospecting, Seamless.AI for list work.
Key takeaways
- ContactOut's pricing page lists Email at $49 a month per seat with 300 exports and Email and Phone at $99 with 600 exports.
- Its free tier is metered daily at 5 emails and 5 phones, which suits occasional lookups and does not suit a list build.
- Seamless.AI publishes no rate on either paid tier; only the free plan of 1 user and 50 credits is public.
- The export allowance rather than the monthly rate is what makes ContactOut fit or not fit a given team.
Reviewed and updated August 28, 2026
ContactOut vs Seamless.AI: Data Enrichment Tool Comparison
ContactOut's free tier gives 5 emails and 5 phones a day rather than a monthly bundle, and that one detail describes the product better than its feature list does. It is built for somebody working through profiles a few at a time. Seamless.AI publishes a free plan of 1 user and 50 credits and then stops publishing, which describes a different buying process entirely.
The Quick Answer
ContactOut is the one with a published ladder. Its pricing page lists Email at $49 a month per seat with 300 exports a month and Email and Phone at $99 with 600 exports, above a free tier metered daily. Seamless.AI shows a free plan of 1 user and 50 credits and quotes both paid tiers. Pick ContactOut for browser-side prospecting against LinkedIn profiles, Seamless.AI when the search happens away from a profile page.
Understanding the Core Difference
ContactOut is an email and phone finder with 700 million+ professional profiles, LinkedIn-focused browser extension, and AI-powered email campaigns.
Seamless.AI is an AI-powered sales lead platform with real-time contact search engine, pitch intelligence, and data enrichment for B2B prospecting.
The two tools attach to different surfaces. ContactOut lives in the browser beside a profile, so it answers the question a recruiter or founder asks while looking at a person. Seamless.AI is a search engine you query, with intent, job change and autopilot capabilities sold as add-ons. One is triggered by something you are already reading; the other by something you decided to look for.
Pricing Comparison
Free plan, 5 emails a day
Free plan, 1 user and 50 credits
ContactOut Pricing
| Plan | Price | Exports | Emails |
|---|---|---|---|
| Free | Free | 5 emails and 5 phones a day | 5 a day |
| $49/mo per seat | 300 exports a month | Unlimited | |
| Email and Phone | $99/mo per seat | 600 exports a month | Unlimited |
The free tier here is a daily allowance rather than a monthly one, which suits a recruiter or founder pulling a handful of contacts a day and does not suit a list build.
Source: ContactOut Pricing
Seamless.AI Pricing
| Plan | Price | Included |
|---|---|---|
| Free | Free | 1 user, 50 credits |
| Pro | Talk to sales | Per user, unlimited exports, annual credit packages |
| Enterprise | Talk to sales | Unlimited users, custom packages |
The pricing page fetched for this comparison shows no rate on either paid tier. The page describes what each plan includes and routes both to a sales conversation, so the only published number on it is the 50 credit free allowance.
Source: Seamless.AI Pricing
How these figures were checked
ContactOut's tiers, export allowances and daily free limits were grepped out of a dated snapshot of contactout.com/pricing taken for this comparison. Seamless.AI's pricing page was fetched for this comparison and carries no rate for either paid tier, which is what the statement above rests on rather than an inference from silence.
Two habits sit behind those sentences and both are worth borrowing when you check a vendor price yourself. A figure belongs to a page rather than to a company, because vendors contradict themselves across their own surfaces, so the page is part of the fact. And a pricing page that renders a monthly and an annual state into the same document will hand a careless reader a rate no visitor is shown, which is why the billing basis is named beside every number above rather than left implied.
What the two cost at a realistic volume
The arithmetic below is illustrative and uses list prices. The daily pattern is invented for the comparison rather than measured.
ContactOut's export allowance is the number that decides the tier. Email at $49 a month per seat covers 300 exports a month, which is roughly 15 a working day. A recruiter picking through profiles will rarely notice that ceiling. A team building a list of 1,000 will hit it in the first week and be looking at the $99 rung's 600 exports, which still does not cover the list.
Seamless.AI cannot be put beside those figures because it publishes none. What the free tier's 50 credits does establish, cheaply, is whether the search surface resolves the kind of person the team actually targets.
So the honest conclusion is a segmentation rather than a winner. Under a few hundred contacts a month ContactOut has a published, affordable answer. Above that, both tools are in quote territory and the export ceiling is the thing to negotiate.
Reading the price ladders against each other
Two things about ContactOut's ladder are easy to misread. The free tier is a daily allowance rather than a monthly one, which suits somebody pulling a handful of contacts a day and does not suit a list build at all. And phone numbers arrive only at the $99 rung, so a team that needs mobiles starts at the second step whatever its volume.
Seamless.AI's single published figure is the free tier. Use it as an evaluation and treat the quote as a separate exercise, with the add-on scope written down before the call. A quote that includes intent signals and one that does not are different products at potentially similar prices.
Features Breakdown
- 700 million+ professional profiles
- Browser extension for LinkedIn
- Email campaigns
- AI email writer
- List builder
- Search portal
- and 2 more listed below
- Data enrichment
- Real-time B2B contact search engine
- Email and cell phone lookups
- Pitch intelligence
- Buyer intent data (add-on)
- Job changes tracking (add-on)
- Autopilot list building (add-on)
- and 3 more listed below
ContactOut key features
- 700 million+ professional profiles
- Browser extension for LinkedIn
- Email campaigns
- AI email writer
- Data enrichment
- List builder
- Search portal
- Bulk license (700 million+ profiles on Team)
- CSV export
Seamless.AI key features
- Real-time B2B contact search engine
- Email and cell phone lookups
- Pitch intelligence
- Data enrichment
- Buyer intent data (add-on)
- Job changes tracking (add-on)
- Autopilot list building (add-on)
- AI writing assistant
- Chrome extension
- Enterprise security and compliance
The capability that distinguishes ContactOut is where it runs. A browser extension beside a profile is a fundamentally different workflow from a search box, and it produces different behaviour: people resolve contacts they happen to be looking at rather than contacts a list told them to look at. That is excellent for recruiting and founder-led selling and poor for systematic coverage of a defined account list.
Seamless.AI's list points the other way, toward search and bulk resolution, with the important caveat that three of its most quoted capabilities are listed as add-ons rather than tier contents. Ask which ones a quote covers before comparing it to a published rate.
Integration Ecosystem
ContactOut connects with: Salesforce, HubSpot, Greenhouse, Lever, Bullhorn, Zapier, Gmail, Outlook.
Seamless.AI connects with: Salesforce, HubSpot, Outreach, SalesLoft, Pipedrive, Microsoft Dynamics 365, Zapier.
Both tools integrate with: Salesforce, HubSpot, Zapier.
Both reach the standard CRM and sequencing set, and Seamless.AI adds Zapier, which is the cheapest route to anything else. For a browser-side tool the integration that matters most is usually the export path rather than a live sync, because the work happens outside any system of record and lands in one afterwards.
Check how exports arrive and in what shape before committing. A tool that produces a clean CSV with consistent columns saves more time than an extra connector nobody configures.
Who Should Pick Which
Pick ContactOut when the work happens on profiles. Recruiters, founders selling into a narrow market, and anyone whose targeting is driven by who they are reading about rather than by a list, all get more from a browser extension than from a search tool.
Pick Seamless.AI when the work starts from a definition rather than from a person. Building coverage of every operations lead at a set of named accounts is a search problem, and doing it through profile visits is slow and inconsistent.
There is a common mistake worth naming. Teams buy the browser extension because it demonstrates well and then try to run a list build through it, which is where the export ceiling and the daily allowance start to hurt. Decide which workflow is the real one before the demo, because the demo will show the other one.
Where Each One Sits in a Cold Outbound Stack
- Step 1Build the list
Decide who belongs on it at all. ContactOut is a browser-side finder attached to LinkedIn profiles.
- Step 2Resolve or load the contact
Turn a name into an address you can send to. Seamless.AI is a search engine plus an engagement layer sold together.
- Step 3Verify before sending
Check the address separately from whoever supplied it, because a bounce costs sending reputation.
- Step 4Send one message
One message per campaign, no bumps and no thread replies, so each address gets a single attempt.
A browser-side finder sits outside the pipeline entirely, which is both its strength and the thing to watch. Contacts resolved that way arrive one at a time and often skip whatever the list building step was supposed to enforce, including suppression and ICP rules.
So whichever tool supplies the address, the same discipline applies downstream: put it through a dedicated verifier rather than trusting the vendor that supplied it, because a bounce costs sending reputation shared across every campaign on the same domains. Then one message per campaign, no bumps and no thread replies. Sourcing a contact from a profile does not make a follow-up message on that profile acceptable.
Switching Between Them
Moving from ContactOut to Seamless.AI is usually a change of workflow rather than of vendor. The exported contacts travel, but the habit does not: a team used to resolving people while browsing has to start working from a list, and that transition is where the value of the switch is either realised or lost.
Moving the other way is simpler and narrower. What is lost is bulk search and whichever add-on signals the Seamless.AI contract carried; what is gained is a low, published monthly rate and a workflow that requires no list to exist first.
In both directions, check the export ceiling before planning the migration month. ContactOut's Email tier allows 300 exports a month, which is a real constraint on getting data out in a hurry.
Feature Comparison Summary
| Comparison | ContactOut | Seamless.AI |
|---|---|---|
| Entry rung | Free | Free |
| First paid rung | $49/mo | Quoted |
| What that paid rung is | Email, 300 exports a month | Pro is sold through sales |
| Where it sits in a stack | A browser-side finder attached to linkedin profiles | A search engine plus an engagement layer sold together |
Getting Started Checklist
- Decide whether prospecting starts from a profile or from a list, because that is the whole of this decision.
- Count the exports actually needed in a month and compare them against ContactOut's 300 on Email and 600 on Email and Phone.
- Check whether phone numbers are needed, since they start at the $99 rung.
- Run the same target contacts through ContactOut's daily free allowance and Seamless.AI's 50 free credits.
- Ask Seamless.AI which add-on capabilities a quote includes, in writing.
- Make sure suppression and ICP rules apply to contacts resolved in a browser, not only to contacts that came off a list.
Final Thoughts
ContactOut is the better tool for the person working through profiles, and its published ladder makes it easy to buy. Seamless.AI is the better tool for the team working through a list, and its price arrives by conversation.
The failure mode is buying the first and using it as the second. Check the export allowance against a realistic month before signing.
Related Reading
- Best ContactOut Alternatives in 2026
- Best Seamless.AI Alternatives in 2026
- Apollo.io vs ContactOut: Data Enrichment Tool Comparison
- ContactOut vs ZoomInfo: Data Enrichment Tool Comparison
- Apollo.io vs Seamless.AI: Data Enrichment Tool Comparison
If you would rather have this run for you, RevenueFlow books qualified meetings on a pay-per-meeting basis and publishes client results.
Pricing and features are taken from the vendors' own pages. Verify current terms with the vendor before relying on them.
Frequently asked questions.
Frequently asked questions- How many contacts can I export from ContactOut a month?
- The pricing page lists 300 exports a month on the Email plan at $49 a seat and 600 on Email and Phone at $99. The free tier is different in kind, allowing 5 emails and 5 phones a day rather than a monthly bundle. That daily shape is why the free plan suits browsing and not list building.
- Does ContactOut include phone numbers?
- Only from the second paid rung. The $49 Email plan covers email addresses, and mobile numbers arrive with the $99 Email and Phone plan, which also doubles the export allowance to 600 a month. A team that needs numbers therefore starts at $99 a seat regardless of how little volume it has.
- What does Seamless.AI cost next to that?
- It cannot be compared on published figures. Seamless.AI's pricing page shows a free plan of 1 user and 50 credits and routes Pro and Enterprise to sales. Before that call, list which add-on capabilities the quote should include, because intent, job change tracking and autopilot are listed separately from the tiers.
- Which is better for building a list of a thousand contacts?
- Neither is comfortable at that volume on its entry rung. ContactOut's 300 monthly exports on the $49 plan cover under a third of it, and Seamless.AI has no published allowance to check. At that size both become quoted purchases, and the export ceiling is the term worth negotiating.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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