Apollo vs ZoomInfo, compared on the jobs you would buy them for

What is the difference between Apollo and ZoomInfo?

Apollo is a self-serve sales platform that puts a B2B contact database, email sequences, a dialer and CRM sync in one subscription with published prices. ZoomInfo is a B2B data and intelligence platform sold in quoted packages, with intent signals and a larger database by its own count, and it pairs with sequencers such as Salesloft for sending. The table sums it up; each section below gives the detail and the source.

How do the Apollo and ZoomInfo databases compare?

Apollo and ZoomInfo both publish the size and accuracy of their own data, and none of those figures is an independent audit. ZoomInfo's published counts of contacts and companies are larger than Apollo's, while Apollo describes a network of users and partner providers that fill its gaps. The test that counts is how each one covers your own market.

• Apollo. Its data page lists more than 240 million contacts and 30 million companies, and claims a 98% email accuracy rate from a seven-step verification. It says more than 2 million users keep the data fresh through connected inboxes and CRM syncs.
• Apollo's gaps. When its own records are missing a field, Apollo says it runs waterfall enrichment across more than 20 other data vendors, and it adds third-party intent data from Bombora (Apollo Data).
• ZoomInfo. Its Our Data page lists more than 500 million contacts, 100 million company records, 300 million verified emails and 135 million direct dial numbers.
• ZoomInfo's accuracy claims. The same data page claims a 96% email deliverability rate and 87% mobile number accuracy, and says human analysts validate events such as acquisitions alongside its automated checks.
• By region. ZoomInfo breaks its counts down by region, for example more than 66 million contacts in Europe and 12.7 million in Australia and New Zealand (ZoomInfo data). We found no regional breakdown on Apollo's data page.
• How to test it. Pick a sample of accounts you already know well, including some in your smallest market, and look them up in both free trials. Count how many of the people you know appear, with a current title and an email that does not bounce.

Which one sends your email sequences?

Apollo sends sequences itself: email campaigns are included on every account, from the free plan up, with deliverability and warm-up tools on paid plans. ZoomInfo's pages describe writing emails with AI and sending them through Gmail, Outlook, Outreach or Salesloft, and ZoomInfo now sells Salesloft for multichannel cadences. Check what your package includes.

• Apollo's limits by plan. Free and Basic allowed 1 mailbox per user and 250 emails a day on Apollo's pricing page in November 2026, with 2 sequences per team on Free and unlimited sequences from Basic up. Professional allowed unlimited Google and Microsoft mailboxes, 5 SMTP mailboxes per user and unlimited daily sends, under Apollo's fair use policy.
• Mailboxes. Apollo's pricing FAQ says free plans can connect Gmail accounts only, while paid plans connect Microsoft or other providers. Paid plans also list a deliverability suite, email warm-up and the option to buy domains and mailboxes.
• ZoomInfo's outreach features. Its pricing page lists AI email generation and intelligent dialing on Professional, and workflows for automated outreach plus email export to Outreach or Salesloft on Copilot Advanced. Its GTM Workspace page says AI-drafted emails go out through Gmail, Outlook, Outreach or Salesloft.
• The Salesloft deal. Since January 2025, ZoomInfo customers can buy Salesloft through their ZoomInfo account manager and send ZoomInfo buying signals into Salesloft workflows, according to the joint announcement on Business Wire. The address of ZoomInfo's old Engage product now redirects to its Salesloft page.
• What it means. Apollo covers data and sending under one login and one bill. With ZoomInfo, plan on a sequencer next to it, and ask in the demo which sending features your package includes.

How do Apollo and ZoomInfo connect to your CRM?

Apollo connects to one CRM at a time, such as Salesforce, HubSpot or Pipedrive, and its Pipedrive sync covers contacts and accounts but not activities. ZoomInfo says its GTM Workspace connects to Salesforce, HubSpot and Microsoft Dynamics with a two-way, real-time sync, and its pricing FAQ says integrations carry their own base cost.

• Apollo. Its Pipedrive guide says you can integrate only one CRM, so a connected Salesforce or HubSpot has to be switched off first, and that emails, calls, meetings and sequence activity do not sync to Pipedrive.
• Apollo's pricing FAQ also lists Outreach, Salesloft, Marketo, SendGrid and LinkedIn among its integrations, and the plan cards show CRM integrations from Basic up.
• ZoomInfo. Its GTM Workspace page says the sync is bidirectional and carries the CRM's field and object permissions over, so each user only sees what they are allowed to see.
• ZoomInfo's integration costs. Its pricing FAQ says out-of-the-box integrations usually have a base cost to install and require a minimum purchase of bulk credits, and that every export through an integration uses a credit.
• Before you choose, list which records you need written back (contacts, accounts, activities, deals) and ask each vendor to show that sync working with your own CRM during the trial.

How much do Apollo and ZoomInfo cost?

In November 2026, Apollo's pricing page published prices and ZoomInfo's did not. Apollo's paid plans started at $49 per seat a month billed annually, while ZoomInfo said its cost depends on features, number of licenses and credit usage, with a quote from sales. Any figure for ZoomInfo's sales plans that you see elsewhere is a third-party estimate. The plans and credits below are as both pages showed them on November 4, 2026.

• Apollo Free: $0, with 900 credits per seat per year, granted monthly (Apollo pricing).
• Apollo Basic: $49 per seat a month billed annually, or $65 billed monthly, with 30,000 credits per seat per year on annual billing and a 14-day trial (Apollo pricing).
• Apollo Professional: $79 per seat a month billed annually, or $99 billed monthly, with 48,000 credits per seat per year and a 14-day trial (Apollo pricing).
• Apollo Organization: $119 per seat a month, annual billing only, with a minimum of 3 seats and 72,000 credits per seat per year (Apollo pricing). Apollo says its prices exclude taxes.
• What a credit buys. On the same page, a verified email costs 1 credit and a phone number 8 credits; credits are shared across the team, and unused ones expire at the end of each billing cycle.
• ZoomInfo. Its pricing page shows no prices for its Professional, Copilot Advanced or Copilot Enterprise plans. It says each package includes a set number of monthly credits, each export costs one credit, and add-ons and integrations change the price.
• A third-party figure for ZoomInfo. Vendr, which publishes pricing data from software purchases made on its platform, puts the median ZoomInfo buyer at $33,500 a year on its ZoomInfo page, last updated in February 2026, based on anonymized data from 1,579 purchases, with a range from $7,253 to $156,021. That is the total of a whole annual contract, not a price per seat, and it reflects buyers who used Vendr, not every ZoomInfo customer.
• One ZoomInfo product does show prices: GTM.ai, its pay-as-you-go API and MCP access for developers and AI agents, which started with 1,000 free data credits and 1,000 AI credits, then top-ups from $20 with no contract or seat fees (GTM.ai pricing). It is a different product from the seat-based sales platform.

What are the contract and payment terms?

Apollo lets you pay month to month and cancel at any time, or pay a year upfront at a discount in exchange for a 12-month commitment, according to its pricing FAQ. ZoomInfo's license terms say the agreement runs for the term in your order form and is not cancellable, so the order form decides how long you are bound.

• Apollo. In November 2026 its pricing page advertised saving 24% with annual billing. On its own card prices that holds for Basic, $49 against $65 a month (24.6% less), while Professional comes to about 20% less, $79 against $99 on the same page. Moving from annual to monthly means cancelling and waiting for the annual term to end, downgrades take effect at once with no refund for unused time, and every seat on an account must be on the same plan.
• ZoomInfo. Its license terms say fees are due when the order is signed and are paid on the schedule the order sets. If ZoomInfo ends the agreement over an uncured material breach by the customer, the fees for the rest of the term fall due at once.
• ZoomInfo's payment options. Its pricing FAQ says the sales team agrees payment frequency with each customer, and that it accepts card, ACH debit, wire transfer and check.
• Renewals. Vendr says some ZoomInfo contracts include automatic renewal clauses with price increases, and that annual price escalation clauses of typically 5% to 10% are common (Vendr on ZoomInfo). Whichever tool you choose, read the renewal and notice clauses in your order form before you sign.

What do Apollo and ZoomInfo say about GDPR and CCPA?

Apollo and ZoomInfo both publish GDPR statements, list security certifications and let people opt out of their databases, and ZoomInfo also publishes an independent CCPA readiness letter. Those are statements about how each vendor handles data. They do not settle whether your own outreach is lawful, which depends on where your prospects are and how you contact them.

• Apollo. Its Privacy Center says Apollo is GDPR compliant as both data processor and data controller and is ISO 27001 and SOC 2 certified by A-LIGN. People who opt out are kept on a suppression list so their profile is not reactivated.
• Apollo's settings. A help article explains settings that block prospecting, emailing and email tracking for people located in the EU, which only work when Apollo can resolve the person's location. The same article says Apollo cannot advise whether GDPR applies to your business and points you to local counsel.
• ZoomInfo. Its Trust Center says it is SOC 2, ISO 27701 and ISO 27001 certified, extends GDPR data subject rights to its whole database as a policy, and publishes a GDPR privacy practices validation from TRUSTe and a CCPA readiness validation letter. It also offers Do Not Call screening.
• ZoomInfo's Trust Center home page also states that ZoomInfo is a data broker under Texas law.
• What the law itself says. Under Article 21 of the GDPR, a person can object at any time to the use of their data for direct marketing, and the data can then no longer be used for that purpose. Sending rules differ by country, and what cold email is and what the law asks summarizes the US, Spain and New Zealand. This is a summary of official sources, not legal advice.

What do user reviews say about Apollo and ZoomInfo?

On G2 in November 2026, Apollo.io averaged 4.7 out of 5 from 9,857 reviews, and ZoomInfo's main listing, GTM Workspace, averaged 4.5 from 9,227. The averages are close and cover every use of each product, so they say little about how either database covers your market.

• G2's listing describes GTM Workspace as the upgraded version of ZoomInfo Sales and ZoomInfo Copilot, and G2's old ZoomInfo SalesOS page now redirects to it.
• Read reviews from companies of your size and in your market, rather than the average.

Which should you choose, Apollo or ZoomInfo?

Choose Apollo when one small team needs contact data and email sequences in one self-serve tool with monthly billing. Choose ZoomInfo when a larger team already runs a CRM such as Salesforce or Dynamics, wants the intent and company signals ZoomInfo sells, has a sequencer, and can commit to the term in an order form.

• Run the same test in both trials: the same sample of accounts you know, in the same countries, with the same job titles.
• Price the credits as well as the seats: estimate how many emails and phone numbers you will reveal each month, and check what happens to the ones you do not use.
• Ask ZoomInfo which sending features your package includes, and whether you would need Salesloft or another sequencer.
• Check the CRM sync in the trial: which records are written back, in which direction, and who maintains it.
• Read the renewal, notice and downgrade terms before you sign.
• Ask a lawyer which countries you can contact and how, before you load any list into either tool.

What if you want meetings rather than another tool?

A done-for-you outbound service is the option when the job is meetings on your calendar rather than software to run. Instead of buying seats and credits, you hire a team that builds the list, writes the emails, runs the sending and passes you the replies. You pay for the work as well as the tools.

• This is where we fit. Ace Digital's booked meetings service builds a verified list of buyers, writes each email for one company, sends from separate domains and mailboxes warmed up for weeks, and has a real person read every reply.
• A lead generation agency or an outbound lead generation service is the wider category. Ask who owns the domains, the lists and the copy if you stop working together.
• If you plan to hire someone to run Apollo or ZoomInfo in-house, what an SDR does explains the role you would be hiring for.