Apollo.io is the tool most small sales teams try first: a huge B2B contact database, email sequences, and a dialer in one app, with a free plan to get started. This Apollo.io review examines whether that all-in-one promise holds up in 2026, from data accuracy to the credit math that decides your real bill.
Apollo sits at the center of many cold email outreach stacks, so the stakes are practical: bad data burns your sending domain, and the wrong plan burns your budget. Below you’ll find how Apollo works, every plan and credit cost, its security record, honest pros and cons, and the best Apollo.io alternatives for different needs.
Key Takeaways
- Best-value all-in-one. Apollo.io pairs a database of more than 250 million contacts with sequences and a dialer, starting at $0.
- The free plan is real. About 75 credits a month and 2 sequences, with no time limit.
- Data accuracy is the main risk. Verify emails before you send, especially for contacts outside North America.
- Credits decide the real cost. A phone number costs 8 credits, and unused credits expire every billing cycle.
- contactID is the best alternative for outreach when cold email deliverability, not data, is what limits your pipeline.
Apollo.io Review Verdict: Is It Worth It?
Yes, for most startups and small teams running email-led outbound into North America. Apollo gives you a large contact database, sequencing, and calling for a fraction of what enterprise data platforms cost. The trade-off is data quality: treat Apollo as a list-building tool, verify before you send, and budget for credits, not just seats.
| Our Verdict | Best-value all-in-one prospecting tool, with data you need to verify |
|---|---|
| Best For | Startups, SMBs, and founders running email-led outbound into North America |
| Not Ideal For | International-first teams, phone-heavy outbound, and enterprises that need deep intent data and direct dials |
| Pricing | Free plan; paid plans from $49 to $119 per user a month on annual billing |
| Free Start | Permanent free plan with about 75 credits a month and 2 sequences |
| Independent Reviews | G2: 4.7/5 (9,600+ reviews). Trustpilot: 3.0/5 (1,200+ reviews) |
| Launched / Owner | Founded in 2015 in San Francisco; Series D led by Bain Capital Ventures at a $1.6 billion valuation (2023) |
The gap between Apollo’s G2 and Trustpilot scores tells the story. Day-to-day users praise ease of use and value, while public complaints cluster around data accuracy, billing, and support response times.
What Is Apollo.io?
Apollo.io is a sales intelligence and engagement platform. It combines a searchable B2B database with tools to reveal contact details, enrich records, run multi-step outreach sequences, make calls, and sync activity to your CRM. Apollo says its data covers more than 250 million contacts at over 60 million companies.
The company was founded in 2015, is headquartered in San Francisco, and raised a $100 million Series D in August 2023 at a $1.6 billion valuation. It reports more than 600,000 companies and 4 million users, which makes it one of the most widely used prospecting tools for small teams.
In March 2026, Apollo launched an AI Assistant it calls an agentic go-to-market operating system. Describe a target market or campaign in plain language, and it builds lists, writes sequences, and launches outreach. Apollo says beta users booked 2.3 times more meetings, a company figure rather than an independent test.
How Apollo.io Works
Apollo’s workflow runs in four steps, from defining who you want to reach to tracking who replied.
| Step | What You Do | What Apollo Does |
|---|---|---|
| 1. Search | Set filters for job title, seniority, industry, company size, location, technology, or buying intent | Returns matching people and companies from its database |
| 2. Reveal and enrich | Spend credits to reveal emails and phone numbers, or upload a CSV to enrich | Adds contact details, firmographics, and an email verification status |
| 3. Sequence | Build a multi-step sequence of emails, calls, and LinkedIn tasks, with optional AI drafting | Sends from your connected mailbox on a schedule and creates call and task reminders |
| 4. Track and sync | Review replies, meetings, and call recordings | Logs activity and syncs it to Salesforce or HubSpot on supported plans |
Step 3 is where most problems start. Because Apollo sends from your own mailbox, every bounce and spam complaint counts against your domain, so the cold email deliverability basics (authentication, warmup, verified lists, low daily volume) matter as much as the data.
Apollo.io Features
Here are the features that matter most for small teams, and which plan includes each one.
| Feature | What It Does | Available On |
|---|---|---|
| People and company search | Filters by title, seniority, industry, headcount, location, technology, and intent | All plans (advanced filters on paid) |
| Chrome extension | Reveals contacts on LinkedIn and company websites, and works inside Gmail | All plans |
| Enrichment | Fills missing emails, phones, and company data in CSVs and CRM records | All plans (credit-limited) |
| Sequences | Multi-step email, call, and task cadences with scheduling | 2 on Free, unlimited from Basic; A/Z testing on Professional |
| AI Assistant and AI research | Builds lists, drafts emails, and researches accounts from plain-language prompts | Limited on Free; AI research costs 1 credit per run |
| Dialer and call recording | Calls from the browser, with recordings and transcripts | 150 minutes on Free and Basic, 4,000 on Professional, 8,000 on Organization |
| Buying intent | Shows accounts researching topics you choose | 1 topic on Free, 6 on Basic and Professional, 12 on Organization |
| Workflows | Automates actions such as adding new matches to a sequence | 2 on Free, 5 on Basic, 50 on Professional, 500 on Organization |
Sequences are Apollo’s strongest outreach feature, and they handle cold email follow-up timing well. The AI drafting is useful for first versions, but the best results still come from starting with proven cold email templates and editing the opening line by hand.
Apollo.io Pricing
Apollo.io pricing has four tiers, all priced per user. Annual billing saves about 20% to 25% compared with paying monthly.
| Plan | Annual Billing | Monthly Billing | Credits | Key Limits |
|---|---|---|---|---|
| Free | $0 | $0 | About 75/month (900/year) | 2 sequences, 250 sends a day, 1 mailbox |
| Basic | $49/user/month | $65/user/month | 2,500/month | Unlimited sequences, 250 sends a day |
| Professional | $79/user/month | $99/user/month | 4,000/month | A/Z testing, unlimited sends, 4,000 dialer minutes |
| Organization | $119/user/month | Annual only | 6,000/month | 3-seat minimum, SSO, custom reports |
Credits are where the real cost hides. An email reveal costs 1 credit, a phone number costs 8, an AI research run costs 1, and US calling uses 1 credit per 30 seconds. Unused credits, including purchased add-on credits, expire at the end of each billing cycle.
In practice, a Basic seat’s 2,500 monthly credits cover about 2,500 emails or just over 300 phone numbers. A three-person team on Professional with annual billing pays $2,844 a year before add-ons, and annual plans can’t be downgraded mid-term.
If high-volume sending is your main need, compare Apollo with dedicated cold email software that rotates mailboxes, since Apollo’s strength is data plus moderate-volume sequencing.
Apollo.io Pros and Cons
| Pros | Cons |
|---|---|
| Contact data, sequences, and dialer in one tool | Data accuracy varies, especially outside North America |
| Genuinely usable free plan with no time limit | Credits expire every cycle, and phone reveals cost 8 each |
| Far cheaper than enterprise data platforms | Support is the lowest-rated area on G2 (4.2/5) |
| Strong Chrome extension for LinkedIn and Gmail | The interface slows down with large lists |
| Fast-moving AI features, including the 2026 AI Assistant | Annual plans can’t be downgraded mid-term |
| Unlimited sequences from the Basic plan | Sending from your mailbox puts your domain at risk |
Is Apollo.io Safe and Compliant?
Apollo is a legitimate, established company, but its record isn’t spotless. In July 2018, a researcher found an Apollo database exposed without a password, and Have I Been Pwned lists 125.9 million email addresses affected, plus names, job titles, employers, and phone numbers. Apollo said no passwords or financial data were included.
In March 2025, LinkedIn removed Apollo’s company page along with pages of other prospecting tools, which trade coverage linked to LinkedIn’s crackdown on scraping. Apollo said its platform was unaffected, and the page was later restored, but the episode is a reminder that LinkedIn-based prospecting carries platform risk.
Compliance also depends on how you use the data. Apollo processes personal data of people in the EU, so GDPR’s legitimate interest rules apply to your outreach, and US emails must follow CAN-SPAM, including a working opt-out. Verify addresses before sending, honor unsubscribes quickly, and keep spam complaints well below Gmail’s 0.3% limit.
Best Apollo.io Alternative: contactID
If your bottleneck is deliverability rather than data, contactID is the strongest alternative. It’s a Chrome extension that sends your outreach through each company’s website contact form instead of cold email, so nothing goes out from your domain and there’s nothing to warm up or protect.
It isn’t a like-for-like database replacement. Apollo finds named people; contactID reaches the team that already answers a company’s inbound leads. Many teams use both: Apollo for targeting, and contactID for accounts where email bounces or goes unanswered.
contactID Features
| Feature | What It Does |
|---|---|
| AI form detection | Finds each site’s Contact Us page and maps fields, even across languages and layouts |
| Bulk submission | Fills and submits forms across your whole list of websites |
| CAPTCHA handling | Handles common CAPTCHA challenges during submission |
| AI sender agents | Personalize each message for the website it’s sent to |
| A/B split testing | Compares message versions to see which earns more replies |
| Template library and analytics | Ready-made outreach templates plus send and success reporting |
| Built-in lead lists | Finds business websites by city and category, so you can build targets inside the tool |
| Duplicate protection | Skips businesses you’ve already contacted |
Here’s how the two tools compare head to head.
| Factor | Apollo.io | contactID |
|---|---|---|
| What it is | Sales intelligence database plus email sequencing | Chrome extension that sends outreach through contact forms |
| Main channel | Email, phone, and LinkedIn tasks | Website contact forms |
| Prospect data | 250M+ contact database | Your own website lists, or built-in lead lists by city and category |
| Deliverability risk | Your domain and mailbox | None, since no email leaves your domain |
| Who receives it | A named person’s inbox | The company’s inbound inbox |
| Free start | About 75 credits a month, 2 sequences | Free install, first 10 sends free |
| Paid from | $49 per user a month (annual) | $0.15 per website, or $6.99 a month |
| Billing model | Credits spent on reveals, expiring each cycle | Pay only for successful submissions |
| Plan | Monthly Price | Websites Included | Per Website | Extra Websites |
|---|---|---|---|---|
| Pay-as-you-go | $0 | None | $0.15 | n/a |
| Starter | $6.99 | 100 | $0.10 | $0.15 |
| Growth | $34.99 | 833 | $0.06 | $0.09 |
| Pro | $69.99 | 3,333 | $0.03 | $0.05 |
| Scale | $139.99 | 19,999 | $0.01 | $0.02 |
For a wider look at this category, see our roundup of contact form automation tools and our Contact Form Blaster review.
Other Apollo.io Alternatives
If you need a different kind of data rather than a different channel, these three Apollo.io alternatives cover the most common gaps: enterprise-grade data, quick lookups, and multi-source enrichment.
ZoomInfo
ZoomInfo is the Apollo.io alternative to pick when data depth matters more than price. It offers stronger direct dials, intent data, and org charts for US accounts, but there’s no free plan and no published pricing. Estimates start around $15,000 a year, and real-world spend of $30,000 to $60,000 is common.
Best for mid-market and enterprise teams prospecting into US accounts at volume. Read our full ZoomInfo review.
Lusha
Lusha is a simpler, faster Apollo.io alternative for revealing one contact at a time. Its free plan includes 40 credits a month for one user, with an email reveal costing 1 credit and a phone number 5. Paid plans start at about $37 to $50 a month.
Best for reps who prospect from LinkedIn and mainly need phone numbers, not sequences.
Clay
Clay addresses Apollo’s biggest weakness, single-source data, by checking multiple providers in a waterfall until it finds a match. Its Claygent agent researches accounts on the web. The free plan includes 100 data credits and 500 actions a month, and paid plans start at $167 a month on annual billing.
Best for RevOps teams and founders building small, high-precision lists.
Bottom Line
Apollo.io earns its popularity. For a small team, no other tool puts this much contact data, sequencing, and calling behind a free plan and a $49 entry price. The catch is that Apollo’s data needs verifying and its credits need managing, so the real cost and results depend on how carefully you use it.
Our Apollo.io review verdict: start on the free plan, verify every list before sending, and upgrade only when credits become the constraint. If email deliverability is what’s holding you back, add contactID as a second channel that doesn’t touch your domain.