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Apollo VS ZoomInfo

Apollo VS Zoominfo: the Email Finder match


Apollo specializes in enrichment but also in email verification and validation. The solution uses a database of more than 265 million contacts to find, enrich and verify the emails of its customers' leads and clients.

Apollo is internationally known, thanks to its free API.

Where does the data come from?

Apollo has a base of:

  • 156 million professional and personal emails
  • 212 million international contacts
  • 120 millions phone numbers

Apollo's 265 million contact database is made up of

  • the CRM and email data of its users (both freemium and paying) which lets Apollo take ownership of several million contacts...: "Apollo has a strong database thanks to our large network of over 1.6 million data contributors. We can run verification checks against connected inboxes, CRMs and csv uploads."
  • its scrapers which "hoover" the web to collect the professional and company data of millions of prospects:  "Apollo has proprietary algorithms that regularly crawl the web at scale, parse public-facing websites, and build a web-wide index of people and company data."
  • its data providers which give more than 270 million contact cards. "Apollo processes over 270 million records monthly from carefully vetted third-party data providers. These partnerships help to complement Apollo's already highly accurate and ever-growing database with additional high-quality verified data."

Apollo scrapes and stores millions of personal and name-based data to resell them. There's no mention of any data update or of the fact that these millions of data are deleted after a 3-year inactivity, as stated by the GDPR.


ZoomInfo relies on a stored database of more than 600 million professional profiles with the company's email address and contact information, and 135 million phone numbers.

The solution offers several ways of finding email addresses and contact information. You can use the single search to find a contact's information or upload a contact file on the platform to enrich their information on a .csv file.

L'outil propose plusieurs manières de trouver les emails et informations de ses contacts. Il est par exemple possible d'obtenir les infos de ses contacts via un système de recherche unique ou de déposer son fichier de contacts sur la plateforme pour enrichir leurs informations sur un fichier csv.

Where does the data come from?

ZoomInfo has a database of more than 600 million contact with phone numbers, email addresses (professional and personal), and other name-based data. The data is extracted from the Internet: ZoomInfo scrapes the web for data, thanks to its own technology or by using third-party softwares.

The scope of this database raises questions as to the explicit consent of the contacts involved. Are the users of the platform aware that their personal data is stored, resold and used?

Aside from the legal aspect which is problematic regarding data collection (especially in Europe), storage and name-based data reselling, there's a real risk of data obsolescence.


Apollo's pricing

  • From 49$ / month (unlimited email credits but the number of contact downloads that you can export outside of Apollo is limited to 1000 contacts/month)
  • Possibility to subscribe to a yearly or monthly plan
  • Free testing period of 14 days
  • Free plan: 10 000 contacts found/month, but the number of contact downloads that you can export outside of Apollo is limited to120 contacts/m

ZoomInfo's pricing

  • Zoominfo is only available on quote and based on: selected features, number of licenses and credit use.
  • No free test
  • No free plan

Comparaison des features

📨 Email

Logo Dropcontact - Email finder et enrichissement B2B

Email Finder and Enrichment

B2B Email qualification

Verification, correction and validation of B2B email


Logo Dropcontact - Enrichissement de contacts B2B

Civil title

Correction and standardization of first /last names

Detection and merging of contact duplicates

Adds LinkedIn profile

Adds personal phone number

🏢 Company

Logo Dropcontact - Enrichissement des données de sociétés

Adds contact's company and website

Adds company's LinkedIn

🗂 File

Logo Dropcontact - Email finder et enrichissement de fichiers B2B

Email enrichment from a contact list

🔌 API and integration

Logo Dropcontact - la meilleure intégration CRM pour trouver et enrichir ses emails

API and Zapier integration available

CRM integration to enrich, update and merge contacts

⚖️ GDPR Compliance

Logo Dropcontact - Le seul Email Finder 100% RGPD

100% GDPR-compliant enrichment solution


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