The Apollo.io Chrome extension is a browser add-on that connects to Apollo’s database of over 275 million B2B contacts and 70 million companies. It lets you find verified email addresses, phone numbers, and company insights directly on LinkedIn, Gmail, company websites, and your CRM without switching tabs.
This review covers everything the Apollo Chrome extension does, how much it really costs, how to install and use it step by step, what real users say on G2 and Reddit, and how it compares to alternatives like Lusha, Hunter.io, RocketReach, ZoomInfo, and Seamless.AI.
What Is the Apollo.io Chrome Extension?
The Apollo.io Chrome extension is a browser tool that brings Apollo’s sales intelligence platform into your everyday workflow. Instead of logging into Apollo separately to search for contacts, the extension runs in the background and surfaces prospect data when you browse LinkedIn, open Gmail, visit a company website, or check your calendar.
The extension shows verified email addresses, direct-dial phone numbers, job titles, company information, technology stacks, funding data, and recent news about the companies you research. It also lets you add prospects to sequences, update your CRM, and track email engagement without leaving the page you are on.
Apollo was founded in 2015 and is headquartered in San Francisco. The platform serves over 600,000 companies and has raised over $100 million in funding. The Chrome extension has a 4.7/5 star rating with over 2,200 reviews on the Chrome Web Store and is the most popular way users interact with Apollo’s database.
How the Extension Works
The extension uses a sidebar panel that appears when you click the Apollo rocket icon in your browser toolbar. The panel reads the page you are on and automatically pulls relevant contact and company data from Apollo’s database.
On a LinkedIn profile, the panel shows the person’s verified email addresses, phone numbers, and recent job changes. On a company website, it shows company size, revenue range, industry, and key employees. In Gmail, it shows the sender’s Apollo profile alongside the email thread. In Google Calendar, it shows prospect information before a meeting.
The extension does not scrape data in real time. It queries Apollo’s pre-indexed database, which is built from public sources, user contributions, and third-party data providers. This means results are fast but may not always reflect the most current information.
Apollo Chrome Extension Key Features
The extension packs a lot of functionality into a small sidebar. Here is what each feature does and how well it performs.
Email and Phone Number Finder
This is the core feature. When you view a LinkedIn profile or a company website, the extension displays verified email addresses and direct-dial phone numbers for the people associated with that page.
Email addresses are verified through Apollo’s multi-step verification process, which checks syntax, domain validity, mail server acceptance, and bounce patterns. Phone numbers are cross-referenced against multiple sources.
The free plan gives you 100 email credits per month (or 600 per year depending on your signup date). Each time you unlock a contact’s email or phone, it costs one credit. Paid plans offer unlimited email credits.
LinkedIn Integration
The extension adds a sidebar panel to LinkedIn profile pages and Sales Navigator. The panel shows:
- Verified email addresses and phone numbers
- Current and past job titles
- Education history
- Mutual connections
- Recent job changes and other intent signals
- Company overview (size, industry, funding, tech stack)
You can add prospects to Apollo sequences, add them to lists, or push them into your CRM directly from the LinkedIn sidebar. The “Add to Sequence” button lets you enroll a prospect in an email sequence without leaving LinkedIn.
Important limitation: LinkedIn actively works against scraping tools. The extension may break or lose functionality when LinkedIn updates its interface. In early 2025, Apollo’s official LinkedIn company page was removed due to reported violations of LinkedIn’s data use policies. The extension still works, but this is a risk to be aware of.
Gmail Integration
When you open an email in Gmail, the extension displays the sender’s Apollo profile in the right sidebar. You can see their job title, company, social profiles, and any previous interactions your team has had with them.
The Gmail integration also includes:
- Email tracking — Know when your emails are opened and links are clicked. Real-time notifications appear in the sidebar.
- Email templates — Access your Apollo email templates directly in Gmail’s compose window.
- Snippets — Save and reuse common text blocks.
- AI Writing Assistant — Generate personalized email drafts using contact and company data.
- One-click CRM logging — Log emails to your CRM automatically.
Google Calendar Integration
Before a meeting, the extension pulls the prospect’s Apollo profile alongside the calendar event. You can see company background, previous email interactions, and team notes without searching separately.
After the meeting, you can log notes and outcomes directly from the calendar view. The integration helps sales reps prepare for calls without context-switching.
CRM Integration (HubSpot and Salesforce)
The extension supports one-click creation of contacts and leads in HubSpot and Salesforce. When you find a prospect on LinkedIn or a website, you can push their complete profile into your CRM with a single click.
For existing CRM records, the extension enriches them with fresh data from Apollo’s database. It can add mobile numbers, direct dials, personal emails, and technology usage information that was not already in your CRM.
The CRM integration also supports custom fields and workflows, so you can map Apollo data to your specific CRM structure.
Company and Contact Insights
The extension provides real-time company data when you visit any business website. The sidebar shows:
- Company size (employee count range)
- Revenue range
- Industry classification
- Technology stack (tools and software they use)
- Recent funding rounds
- Hiring trends
- News mentions
For contacts, the extension shows intent signals like recent job changes, promotions, and content engagement. These signals help you prioritize prospects who are actively in-market.
Bulk Actions
The extension supports bulk operations for power users. You can:
- Export entire LinkedIn search results to Apollo lists
- Add multiple prospects to sequences at once
- Update dozens of CRM records simultaneously
- Enrich multiple contacts in one action
Bulk actions save significant time when building large prospect lists or running account-based marketing campaigns.
Built-in Email Verification
Every email address the extension surfaces goes through Apollo’s multi-step verification process before it is displayed. The verification checks:
- Syntax validity
- Domain existence and mail server configuration
- SMTP acceptance (whether the mail server accepts mail for that address)
- Bounce pattern analysis
Apollo claims a 97% email accuracy rate and maintains a data contributor network of over 2 million users that helps keep the database current. However, no verification system is perfect. Independent users report 5-10% bounce rates on average, especially for contacts whose information changes frequently or who work at smaller companies with less public data.
Apollo Chrome Extension Pricing
Apollo’s pricing is credit-based. The free plan is generous enough for light use, but serious prospecting requires a paid plan.
Free Plan
The free plan includes:
- 100 email credits per month (some accounts get 600 per year)
- 60 mobile phone credits per year
- 120 export credits per year
- 2 basic sequence automations
- 1 intent topic
- Daily email send cap of 250
The free plan is useful for testing the extension and occasional prospecting. For regular use, the credit limits will feel restrictive.
Paid Plans (billed annually)
| Plan | Price per User/Month | Key Features |
|---|---|---|
| Basic | $49 | Unlimited email credits, more mobile/export credits, job change alerts, data enrichment |
| Professional | $79 | A/B testing, CRM integration, advanced filters |
| Organization | $119 | Advanced analytics, security controls, collaborative features, dedicated support |
Hidden and Variable Costs
The published price is not the full cost. Several factors can increase your monthly bill:
- Email sending infrastructure. Apollo’s built-in email sending is functional but not optimized for deliverability. Many users supplement with a dedicated SMTP service or email warming tool.
- CRM integration costs. If you use Salesforce or HubSpot, you may need paid tiers of those platforms to fully leverage Apollo’s integration.
- Additional data credits. Some advanced data features consume credits beyond the standard email/phone lookups.
- Team size. Apollo is priced per user. A team of 5 on the Professional plan costs $395/month.
A realistic monthly cost for a team of 3 on the Basic plan is $147 (subscription) + $30-100 (email infrastructure) = $177-247 per month.
How to Install the Apollo Chrome Extension
Installing the extension takes about two minutes. Follow these steps.
Step 1: Go to the Chrome Web Store
Open Chrome and navigate to the Chrome Web Store. Search for “Apollo Chrome Extension” or go directly to the Apollo listing. Verify the publisher is Apollo.io before installing.
Step 2: Click “Add to Chrome”
Click the “Add to Chrome” button on the extension listing page. Chrome will show a permissions dialog explaining what the extension can access.
Step 3: Review and Confirm Permissions
The extension requests permission to read and change data on websites you visit. This is necessary for it to work on LinkedIn, Gmail, and other sites. Click “Add Extension” to confirm.
Step 4: Pin the Extension
After installation, click the puzzle piece icon in your Chrome toolbar and pin the Apollo rocket icon so it is always visible.
Step 5: Log In to Your Apollo Account
Click the Apollo icon and log in with your Apollo credentials. If you do not have an account, you can create one for free. The extension will activate and start showing data on supported sites.
How to Use the Apollo Chrome Extension: A Step-by-Step Guide
Once installed, the extension works automatically on supported sites. Here is how to use it for common tasks.
Finding Emails on LinkedIn
- Navigate to any LinkedIn profile page.
- Click the Apollo icon in your Chrome toolbar to open the sidebar.
- The sidebar displays the person’s verified email addresses and phone numbers.
- Click “Unlock” to reveal the full email address (consumes one credit).
- Click “Add to Sequence” to enroll the prospect in an email sequence.
- Click “Add to List” to save the contact to an Apollo list for later.
Finding Emails on Company Websites
- Visit any company website.
- Click the Apollo icon to open the sidebar.
- The sidebar shows an overview of the company: size, revenue, industry, and key employees.
- Scroll through the employee list to find relevant contacts.
- Click any contact to see their email and phone details.
- Unlock and save contacts as needed.
Using the Extension in Gmail
- Open any email in your Gmail inbox.
- The Apollo sidebar automatically shows the sender’s profile.
- Use the “Templates” button to insert saved email templates.
- Use the “Snippets” button to insert saved text blocks.
- Use the “Generate” button to create AI-personalized email drafts.
- Email tracking is automatic — you will see open and click notifications in the sidebar.
Adding Prospects to Sequences
- Find a prospect using the extension on LinkedIn or a website.
- Click “Add to Sequence” in the sidebar.
- Select the sequence you want to enroll them in.
- Choose the email address to use for the sequence.
- Confirm enrollment. The prospect will receive your sequence emails according to the schedule you set.
Pushing Contacts to Your CRM
- Find a prospect using the extension.
- Click the CRM icon in the sidebar (HubSpot or Salesforce).
- Review the data that will be pushed to your CRM.
- Click “Create Contact” or “Create Lead.”
- The contact appears in your CRM with email, phone, job title, company, and social profiles populated.
Who Is the Apollo Chrome Extension Best For?
The extension is valuable for specific use cases and less useful for others.
Best For
Outbound sales reps who spend hours researching prospects and manually entering data. The extension eliminates most of that work by surfacing contact information instantly.
SDRs and BDRs who need to build large prospect lists quickly. Bulk actions and sequence integration make it possible to scale outreach without burning out.
Recruiters and talent acquisition professionals who need to find candidate contact details on LinkedIn. The extension makes sourcing significantly faster.
Marketing professionals doing account-based marketing who need to build precise contact lists based on job titles, company size, and industry.
Founders and solopreneurs who need enterprise-level prospecting capabilities without enterprise complexity or cost.
Sales managers who want to standardize how their team finds and manages prospects across the organization.
Who Should Skip It
Purely inbound sales teams who do not do outbound prospecting. The extension adds little value if leads come to you.
Highly regulated industries like finance, healthcare, or legal where the compliance questions around contact data are complex. Apollo’s data practices may not meet your regulatory requirements.
Businesses selling to small local businesses or consumers. Apollo’s B2B database is optimized for company contacts, not individual consumers.
Teams on extremely tight budgets. The free plan is limited, and paid plans add up quickly for multiple users.
Apollo Chrome Extension Pros and Cons
Pros
- Massive database. Over 275 million contacts and 70 million companies. Coverage is especially strong for North American B2B companies.
- Real-time data enrichment. Contact information updates automatically as you browse. No manual refreshing needed.
- Multi-platform compatibility. Works on LinkedIn, Gmail, Google Calendar, company websites, HubSpot, and Salesforce.
- Significant time savings. Tasks that take 30 minutes of manual research take about 3 minutes with the extension.
- Built-in email verification. Every email is verified before display, which helps protect sender reputation.
- Bulk actions. Export entire LinkedIn searches, add multiple prospects to sequences, update dozens of CRM records at once.
- AI Writing Assistant. Generates personalized email drafts using prospect and company data.
- Email tracking. Real-time open and click notifications within the Gmail sidebar.
Cons
- Data accuracy is not perfect. Some email addresses are outdated. Phone numbers occasionally belong to old employers. Expect a 5-10% bounce rate on average.
- Browser slowdown. The extension can add noticeable lag, especially on LinkedIn with large contact lists or multiple tabs open.
- Credit limits are restrictive. Even paid plans have monthly credit caps for unlocking contact information. Heavy users can exhaust credits quickly.
- LinkedIn integration is fragile. LinkedIn actively works against scraping tools. Features sometimes break when LinkedIn updates its interface.
- Email tracking is not foolproof. Privacy-focused email clients block tracking pixels. Open rates may be underreported.
- Customer support can be slow. Some users report waiting days for responses to support tickets.
- Compliance concerns. Apollo’s LinkedIn page was removed in early 2025 due to data policy violations. The long-term stability of LinkedIn integration is uncertain.
Apollo Chrome Extension vs Alternatives: Comparison Table
| Feature | Apollo.io | Lusha | Hunter.io | RocketReach | ZoomInfo | Seamless.AI |
|---|---|---|---|---|---|---|
| Database size | 275M contacts, 70M companies | 100M+ contacts | 200M+ contacts | 700M+ professionals | 200M+ contacts | 100M+ contacts |
| Free plan | 100 credits/month | 5 credits/month | 25 verifications/month | None | 10 contacts/month (14-day trial) | 50 credits |
| Paid starting price | $49/user/month | $36/user/month | $49/month | $63/month | $14,995/year | Custom |
| LinkedIn integration | ✅ Deep | ✅ Basic | ✅ Basic | ✅ Basic | ✅ Deep | ✅ Deep |
| Gmail integration | ✅ Full (tracking, templates, AI) | ✅ Basic | ✅ Basic | ❌ No | ❌ No | ✅ Basic |
| CRM integration | ✅ HubSpot, Salesforce | ✅ HubSpot, Salesforce | ✅ HubSpot, Salesforce | ✅ HubSpot, Salesforce | ✅ All major CRMs | ✅ HubSpot, Salesforce |
| Email sequences | ✅ Built-in | ❌ No | ❌ No | ❌ No | ❌ No | ❌ No |
| AI writing assistant | ✅ Yes | ❌ No | ❌ No | ❌ No | ❌ No | ✅ Yes |
| Email tracking | ✅ Yes | ❌ No | ❌ No | ❌ No | ❌ No | ❌ No |
| Bulk actions | ✅ Yes | ❌ Limited | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
| Intent signals | ✅ Yes | ❌ No | ❌ No | ✅ Yes | ✅ Yes | ❌ No |
| ISO 27001 / SOC 2 | ✅ Yes | ❌ No | ❌ No | ❌ No | ✅ Yes | ❌ No |
| Best for | All-in-one prospecting + outreach | Quick lookups | Email finding | Large databases | Enterprise | AI-powered prospecting |
When to Choose Each Alternative
Choose Lusha if you need quick, simple contact lookups without the complexity of a full sales platform. Lusha is faster to learn and has fewer features to navigate.
Choose Hunter.io if your primary need is finding email addresses and verifying them. Hunter is simpler, more focused, and has excellent email verification.
Choose RocketReach if you need the largest possible database. RocketReach claims 700 million professionals, which is significantly more than Apollo.
Choose ZoomInfo if you are an enterprise with compliance requirements and budget for a premium data solution. ZoomInfo has the most accurate data but at enterprise pricing.
Choose Seamless.AI if you want AI-powered prospecting with real-time data updates and a simpler interface.
Apollo Chrome Extension User Reviews: What G2 and Reddit Say
G2 and Chrome Web Store Ratings
Apollo.io has a 4.5/5 rating on G2 with over 6,000 reviews. The Chrome extension has a 4.7/5 rating on the Chrome Web Store with over 2,200 reviews. The extension is generally well-rated, with users praising the database size and LinkedIn integration.
Positive themes from G2:
- Database size and coverage (mentioned in ~75% of positive reviews)
- LinkedIn integration saves significant time (~65%)
- Ease of use and quick setup (~55%)
- Value for money compared to enterprise alternatives (~45%)
Negative themes from G2:
- Data accuracy issues with outdated contacts (~40%)
- Credit system is confusing and restrictive (~35%)
- Browser slowdown and performance issues (~30%)
- Customer support response times (~25%)
Reddit Sentiment
On r/sales, r/SaaS, and r/CRM, Apollo discussions are mixed. Common themes:
- Many sales professionals use Apollo as their primary prospecting tool and find it effective.
- The most frequent complaint is data accuracy — users report 5-15% bounce rates on email lists built with Apollo.
- Several users mention that Apollo’s LinkedIn integration breaks periodically after LinkedIn updates.
- The credit system is a common frustration, especially for heavy users who hit limits mid-month.
- Some users report success combining Apollo with a dedicated email verification tool to improve data quality.
Apollo Chrome Extension Privacy and Compliance
Apollo maintains several security certifications and compliance frameworks that are important for B2B buyers.
Certifications
- ISO 27001 — Information security management standard
- SOC 2 Type II — Service organization controls for security, availability, and processing integrity
- GDPR compliant — Data processing agreement available
- CCPA compliant — California Consumer Privacy Act compliance
Data Collection Practices
The extension collects data from LinkedIn, Gmail, Salesforce, HubSpot, and company websites. It extracts publicly available contact details including names, job titles, email addresses, and phone numbers.
Apollo states that it does not access unrelated browsing data or sensitive personal information. Users should review the permissions the extension requests and ensure they comply with their organization’s data policies.
Security Measures
- Data encrypted in transit (TLS) and at rest (AES-256)
- Two-factor authentication available
- Regular third-party penetration tests
- Annual security audits
- Secure OAuth2 protocols for third-party integrations
- Data backups with 24-hour recovery objective
Compliance Considerations
If you prospect in the EU, configure Apollo’s GDPR settings to exclude EU individuals from your searches. If you operate in California, ensure your use of Apollo data complies with CCPA requirements.
For highly regulated industries, consult your legal team before using Apollo for prospecting. The legal questions around B2B contact data are complex and vary by jurisdiction.
How to Get the Most Out of the Apollo Chrome Extension
Verify Emails Before Sending
Even with Apollo’s built-in verification, expect some bounced emails. Use a dedicated email verification tool before sending to large lists. This protects your sender reputation and improves deliverability.
Combine with a Dedicated Email Infrastructure
Apollo’s email sending is functional but not optimized for deliverability. For critical campaigns, use a dedicated SMTP service and configure SPF, DKIM, and DMARC authentication. For a complete guide, see our DMARC implementation guide. You may also want to use a dedicated email deliverability tool alongside Apollo for critical campaigns.
Use Sequences Strategically
Do not add every prospect you find to a sequence immediately. Segment your lists by intent signals, job title, company size, and industry. Create targeted sequences for each segment rather than sending the same sequence to everyone.
Monitor Credit Usage
Track your credit consumption throughout the month. If you consistently hit limits, upgrade your plan or adjust your workflow to use credits more efficiently. Unlocking contacts only when you are ready to reach out prevents wasted credits on stale leads.
Keep the Extension Updated
Apollo releases updates regularly to fix bugs and adapt to LinkedIn changes. Enable automatic updates in Chrome to ensure you always have the latest version.
Key Takeaways
- The Apollo.io Chrome extension gives you access to over 275 million B2B contacts and 70 million companies directly from LinkedIn, Gmail, company websites, and your CRM.
- The free plan includes 100 email credits per month. Paid plans start at $49/user/month for unlimited email credits, CRM integration, and job change alerts.
- The extension saves significant time on prospecting tasks but has limitations: data accuracy is not perfect (expect 5-10% bounce rates), the extension can slow down your browser, and LinkedIn integration is fragile.
- Apollo holds ISO 27001 and SOC 2 certifications and is GDPR and CCPA compliant. However, LinkedIn removed Apollo’s company page in early 2025 due to data policy violations, which raises compliance questions.
- Alternatives include Lusha (simpler, faster), Hunter.io (better for email finding), RocketReach (larger database), ZoomInfo (enterprise-grade), and Seamless.AI (AI-powered).
- For best results, combine Apollo with a dedicated email verification tool and proper email infrastructure (SPF, DKIM, DMARC) to protect deliverability.
Frequently Asked Questions
Is the Apollo Chrome extension free?
Yes, Apollo offers a free plan with 100 email credits per month (some accounts receive 600 per year). The free plan also includes 60 mobile credits per year, 120 export credits per year, and 2 basic sequence automations. For regular prospecting, the paid Basic plan at $49/user/month is more practical.
Does the Apollo Chrome extension work on LinkedIn?
Yes, the extension works on LinkedIn profile pages and Sales Navigator. It displays verified email addresses, phone numbers, job history, and company insights in a sidebar panel. However, LinkedIn actively works against scraping tools, and the extension may break when LinkedIn updates its interface.
How accurate is Apollo.io data?
Apollo uses multi-step email verification including syntax checks, domain validation, SMTP acceptance testing, and bounce pattern analysis. Despite this, users report 5-10% bounce rates on average. Phone numbers and job titles may be outdated, especially for contacts who changed roles recently.
Does Apollo Chrome extension slow down the browser?
Some users report noticeable lag, especially when working with large contact lists or multiple tabs open on LinkedIn. The extension loads data from Apollo’s servers for each page, which adds processing time. Disabling the extension on sites you do not need it on can help.
Can I use Apollo Chrome extension with Salesforce?
Yes, the extension supports one-click creation of Salesforce leads and contacts. It also enriches existing Salesforce records with fresh data from Apollo’s database, including mobile numbers, direct dials, and technology usage information.
What is the difference between Apollo and Lusha?
Apollo is a full sales intelligence and engagement platform with email sequences, AI writing, email tracking, and CRM integration. Lusha is a simpler contact data tool focused on quick lookups. Apollo has a larger database and more features. Lusha is faster to learn and has fewer compliance concerns.
Is Apollo.io GDPR compliant?
Yes, Apollo is GDPR compliant and offers a Data Processing Agreement. The platform includes settings to exclude EU individuals from prospecting. Apollo also holds ISO 27001 and SOC 2 Type II certifications for security and data protection.
How do I install the Apollo Chrome extension?
Go to the Chrome Web Store, search for “Apollo Chrome Extension,” verify the publisher is Apollo.io, click “Add to Chrome,” review the permissions, and confirm. After installation, pin the extension and log in with your Apollo account.
What happened to Apollo’s LinkedIn page?
In early 2025, Apollo.io’s official LinkedIn company page was removed due to reported violations of LinkedIn’s data use policies. The Chrome extension and platform remain functional, but this event raised concerns about the long-term stability of Apollo’s LinkedIn integration.
Can Apollo Chrome extension replace my CRM?
No. Apollo is a sales intelligence and engagement platform that integrates with CRMs like HubSpot and Salesforce. It is not a CRM replacement. You still need a CRM to manage your pipeline, deals, and customer relationships.