Apollo vs ZoomInfo: the 2026 outbound data showdown

Apollo vs ZoomInfo comes down to price and phone numbers. Apollo costs $49 to $119 per seat per month on annual billing and finds emails almost as well as ZoomInfo: 78% against 84% in Cleanlist's 1,000-lead test from March 2026. ZoomInfo publishes no price, its median contract is $33,500 a year, and it finds far more mobile numbers, 67% against Apollo's 41%. For email-led outbound into SMB and mid-market, Apollo is the better buy. For call-heavy teams selling into enterprise, ZoomInfo earns its premium.

Key Findings

• Email data is close: Apollo matched 78% of emails and ZoomInfo 84% in the same 1,000-lead test.
• Phone data is not close: ZoomInfo found mobile numbers for 67% of leads and direct dials for 71%, against 41% and 52% for Apollo.
• Five Apollo Professional seats cost $4,740 a year on annual billing. ZoomInfo's median contract is $33,500 a year, per Vendr's data on 1,571 purchases.
• At 60,000 leads a year, ZoomInfo's premium works out to about $1.84 per extra mobile number. At 12,000 leads it is $9.22.
• In a 450-lead live test, Apollo got more replies (5.1% against 4.7%) but ZoomInfo bounced less once emails were sent (0.8% against 1.8%).
• Neither tool fixes a weak offer. If reply rates are low on clean data, the copy and the offer are the problem, which is what our outbound lead generation team fixes first.

Which is better for outbound, Apollo or ZoomInfo?

Apollo is better for most outbound teams, and ZoomInfo is better for a specific one: a call-first team selling into large enterprise accounts. The two tools are built for different jobs, so the useful question is which job you are hiring the tool for.

A founder sending targeted cold email into mid-market SaaS needs speed, list building, sequencing and enough accuracy to keep campaigns healthy. A call-heavy team going after large accounts needs deeper phone coverage, better account mapping and more confidence that a rep reaches a human. The first rewards workflow. The second rewards phone data. Either tool is only the data step, and our guide to sales prospecting shows where a data provider fits in the full process.

The two tools, side by side

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A data company and a workflow product

ZoomInfo is a data company first. It behaves like a core data layer that a larger sales org builds around, with deep company coverage and account mapping. Apollo is a sales workflow product first. You build a list, filter it, write outreach and send from the same screen, so fewer things break between search and sequence.

The database sizes favor ZoomInfo, with 321 million contacts against Apollo's 275 million according to Cleanlist's comparison. A larger pool only helps if your team turns it into meetings, and for a lean team the extra handoffs to a separate sequencer usually cost more than the extra records are worth.

If you are still deciding whether ZoomInfo is even the right category of tool, scan these ZoomInfo alternatives for outbound teams before you sign a long contract.

How accurate is Apollo's data compared with ZoomInfo?

ZoomInfo is more accurate on every measure in the most recent public test, but the size of the gap depends entirely on the channel. On email it is six points. On mobile numbers it is 26.

How Apollo's email quality holds up in live sends

A separate test of 450 real leads, written up by UpLead, ran both datasets through live campaigns. Apollo's leads failed a verifier less often, 13.3% against 15.3%, and drew more replies, 5.1% against 4.7%. Once the emails were actually sent, ZoomInfo's data held up better: its campaign bounce rate was 0.8% against Apollo's 1.8%.

For teams sending high volumes of email into SMB and mid-market, Apollo's email data is good enough to work, especially with a verification pass before sending. Whichever source you pick, a B2B data enrichment workflow that checks more than one provider fills the gaps either tool leaves, and real email deliverability hygiene keeps the 1.8% from becoming a domain problem.

Where ZoomInfo's phone data earns its price

If your reps live on the phone, Apollo's 41% mobile match rate is a real problem. A call-first team cannot build activity around numbers it does not have, and better copy will not fix a missing direct dial. This is the one place where ZoomInfo's data advantage changes the outcome rather than the margin.

Which tool runs multichannel campaigns better?

Apollo, because it keeps list building, email steps, LinkedIn tasks and calls in one working environment. ZoomInfo usually means pulling data out, moving it into a separate sequencer, syncing activity back into the CRM and managing the gaps between three systems.

That stitched stack is manageable for a team with RevOps support. For a lean team it is where targeting lives in one place, outreach in another and reporting nowhere useful. If the core engine is a call team that needs more direct dials, the equation flips, and the extra tooling is the price of better phone data.

How much do Apollo and ZoomInfo cost?

Apollo publishes its prices: a free plan, then $49, $79 or $119 per seat per month on annual billing, or $65, $99 or $149 billed monthly. Our Apollo pricing guide breaks down every plan and what one credit costs. ZoomInfo publishes no price at all, so the best public number is Vendr's median contract of $33,500 a year across 1,571 recorded purchases, as cited by Cleanlist.

What ZoomInfo's extra phone numbers cost

The real question with ZoomInfo is whether the extra phone coverage is worth the premium. Here is how we worked it out. Five Apollo Professional seats on annual billing cost $4,740 a year. ZoomInfo's median contract is $33,500, so the premium is $28,760. In the 1,000-lead test, ZoomInfo found mobile numbers for 26 more leads in every 100. Divide the premium by the extra numbers you get at your volume:

When the premium pays

If a connected call is worth more to your team than the number in that table, ZoomInfo pays for itself. A team working 60,000 leads a year by phone pays under two dollars for each extra number, which is cheap if one call in a few dozen turns into a meeting. A team working 12,000 leads a year mostly by email pays over nine dollars a number for coverage it will rarely dial. The numbers use a median contract, so plug in your own quote before deciding.

Will better data fix a low reply rate?

Usually not. The tool sets your ceiling and the offer decides whether you reach it. A list that matches 84% of emails instead of 78% gives you six more chances in every hundred, and a weak offer wastes all of them.

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Our top-performing clients all have one thing in common. An offer too good to say no to. People obsess over which tool to buy, but the tool just delivers the message. If the message is weak, a better database only helps you get ignored faster.

Thibault Garcia Founder, Reachly

Our take: Buying better data does not fix weak segmentation, bland copy or a broken domain setup. Fix the offer first, then argue about the tool.

Which should you choose, Apollo or ZoomInfo?

Most teams should start with Apollo. If you are a startup, SMB or growth-stage team running email and LinkedIn into mid-market accounts, the workflow is tighter, the price is a fraction of ZoomInfo's and the email data is within six points.

Choose ZoomInfo if your team calls into large enterprises, maps complex buying committees or needs the strongest available phone coverage, and if your volume brings the cost per extra number down to something a connected call is worth. Apollo is the better default. ZoomInfo is the better specialist.

Either tool is one input, not the whole motion, so map it to how signal-based outbound actually runs and to the wider modern outbound playbook. If data hygiene is part of the problem, the same discipline helps you qualify leads cleanly. For nearby options, see the best B2B lead generation tools and these Apollo alternatives for outbound teams.

There is also a third answer if the goal is booked meetings rather than a tuned stack. Reachly runs multichannel campaigns across cold email, LinkedIn and cold calling, using Clay for enrichment and signals, Smartlead for sending and HeyReach for LinkedIn, so your team never manages the stack.

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Apollo vs ZoomInfo FAQ

Is Apollo AI better than ZoomInfo?

For a lean team that wants data, AI-written emails and sequencing in one tool, yes. Apollo includes 250,000 to 1,000,000 AI writing words a month depending on the plan and charges 1 credit per AI research run. ZoomInfo's strength is the data underneath, so its AI features matter most to teams already paying for the enterprise contract.

Who is Apollo's biggest competitor?

ZoomInfo at the enterprise end. For smaller teams the closer rivals are contact-data tools such as Lusha and enrichment platforms such as Clay, which many teams run alongside Apollo rather than instead of it.

Who is ZoomInfo's biggest competitor?

Apollo is the most common switch for teams that want a lower price and built-in sequencing. In enterprise deals ZoomInfo competes more with Cognism for European and mobile data, and with 6sense and Demandbase for intent and account-based marketing.

Can ZoomInfo be trusted?

Its data is the most complete single source in the public tests, but no database is clean enough to send to unverified. Even at an 84% email match rate, 16 in every 100 emails need replacing, so run every export through a separate verifier before it touches a sending domain.

Is ZoomInfo outdated?

The data is not; it still has the largest single-source database. What has aged is the buying model. There is no public price, and Cleanlist reports that annual contracts are not negotiable below 10 seats, which is a poor fit for teams that want to test a tool for a month first.