Apollo Data Overview

Apollo collects and verifies data against multiple data sources to identify the best source of truth. There are four main ways in which Apollo collects data:

• Data contributor network: Apollo has a strong database thanks to its large network of over two million data contributors that share information about their business contacts with Apollo in the course of using Apollo services.
• Engagement suite: Apollo's powerful engagement tools enable it to track email replies and bounces to collect and verify valid emails against invalid ones.
• Public data crawling: 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.
• Third-party data providers: Apollo processes over 200 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.

At Apollo, data isn't single-sourced. The combination of its multiple data sources, proprietary algorithms, and data network of over two million contributors allow Apollo to provide the best-in-class data coverage and quality.

For more information, check out the Apollo living data network.

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The specific criteria of an ICP varies from company to company. The best way to identify the data coverage on your target audience is to launch Apollo and apply the applicable search filters to your search.

Apollo then displays the total number of records that match the criteria for your ICP.

(Recommended) Apply the email status filter to your search to find Apollo-verified emails.

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Lead data is Apollo's bread and butter. The Apollo team constantly improves and refines how it collects and verifies data to provide its users with a best-in-class solution.

Apollo's proprietary approach and automated multi-step verification process help it maintain a highly accurate database and keep records up-to-date. The secret potion includes:

• A seven step email verification process to identify valid emails within catch-all domains, verify data in real-time, predict email bounces, and automatically clean invalid emails. Learn more about Apollo's email verification process.
• An automated, real-time verification process for direct dial requests. Apollo's proprietary algorithm runs the number through multiple checks using its large dataset to verify a number's accuracy.
• The instant refresh of contact and company information every time a data signal, such as a job change or a new direct dial or email, informs Apollo of an update.

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Apollo takes data accuracy and compliance very seriously. As a result, Apollo:

• Refreshes data in real-time whenever the Apollo system captures a data signal, such as a job change or a new phone number or email. This signal triggers the system to check for new data and verify its validity.
• Runs monthly checks on its database to ensure that contact data stays accurate and up-to-date.
• Regularly refreshes its database for individuals who request to opt out of Apollo services and from third parties who pass along opt-out requests from individuals to Apollo.

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If you use a third-party tool in conjunction with Apollo, you may find that the tool flags some Apollo-verified emails as invalid. This is because the majority of popular tools use a method called SMTP tickling, which cannot differentiate between valid and invalid emails from catch-all domains.

Within Apollo's seven step email verification process, Apollo leverages its powerful engagement tools to track email replies and bounces. This means that Apollo can collect and verify valid emails within catch-all domains. For more information, refer to the How Apollo Verifies Emails article.

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Accurate data also means compliant data. Apollo takes opt-out requests and regulations seriously and has implemented the following practices:

1. A clear, transparent, and consumer-friendly opt-out request process. You can learn more about it here. Apollo processes opt-out requests promptly to ensure its data is up-to-date with consumer opt-out rights.
2. Once an opt-out occurs, Apollo deletes the contact from its database. Apollo then retains their email address solely to respect their opt-out preference and ensure they do not reappear in the Apollo database.
3. Customers can and should filter data based on location. In Apollo, you can target your use of the Apollo dataset to certain locales, industries, people, or businesses where you have a legitimate interest in reaching out and where your outreach is compliant with local law.

Does Apollo remove the contact from my account?	When a contact requests to be removed from Apollo, no Apollo users can subsequently find their information when prospecting net-new records. However, if you saved the contact to your account before they opted out, Apollo does not remove the contact from your specific account. It is up to you to decide whether you have an independent legal basis to remain in contact with the individual — for example, if you have a separate business relationship. If you do not have a valid legal basis to contact them, Apollo strongly advises you to delete them from your account.
How do I delete a contact from my Apollo account?	To delete a contact that has requested to be removed from the Apollo database: Navigate to the contact profile and click Delete contact. Click Delete.
How do I identify contacts who have requested to be removed from Apollo?	Navigate to a contact's profile page to see if a contact has requested to be removed from the Apollo database. There are two ways to view this information: Apollo displays a warning banner at the top of the page to highlight if the contact has requested to be removed. Apollo logs the request in the activity widget.

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Apollo consistently expands and refines its database to offer you the most accessible, trustworthy B2B data. To identify the best source of truth, Apollo collects and verifies data against multiple data sources as well as via its:

• Network of over 2 million data contributors.
• Email engagement tools.
• Verified third-party data providers.
• Crawling of public data sources.

Compared to other B2B databases, Apollo offers over sixty-five data attribute filters so you can find and reach your entire target market.

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Apollo automatically sends an email notification to every new contact in certain regions, including Argentina, Brazil, Canada, India, Mexico, Singapore, Philippines, South Africa, California, Maryland, Oregon, the European Union, the United Kingdom, and Switzerland, when it adds them to its database.

Subject to notification requirements, the email explains how Apollo processes contact data and informs the contacts of their rights.

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If you notice a high bounce rate from the emails you send via a mailbox connected to Apollo, you need to take action to lower the number of bounces and protect your sending reputation.

Multiple factors can contribute to high bounce rates. Refer to Troubleshoot Bounced Emails for more information on the potential causes and steps to take to rectify any issues you may be facing.

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To access the full functionality of Apollo prospecting and engagement tools, it's necessary to link your business email and calendar with your Apollo account.

Apollo never deletes your emails or calendars. When you link your email or calendar, Apollo may use automated algorithms to extract certain personal information from your email and calendar content and related metadata, which may be added to Apollo's contributory data network. Apollo only adds a piece of data to its database if multiple separate users and accounts have the same verified information for that contact, account, or industry.

When you give Apollo the necessary access and permissions, Apollo can help you to:

• Mailbox: Automate emails, create templates and follow-ups, view open rates, and more.
• Google Calendar: Empower contacts to book meetings with you through the Apollo meetings scheduler, attribute success to your booked meetings, view job changes, and more.

For more information about data sharing with Apollo, check out How Data Sharing Works with the Apollo Data Contributor Network.

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