Apollo.io vs Success.ai
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
Still shortlisting? Browse the best in B2B Data Providers and the best in Cold Email Outreach for every option we track, with award winners called out.
The short answer
Editorial assessmentSuccess.ai compared with Apollo.io
The closest comparison on concept: a large B2B database with sequencing attached. Apollo is the more established product with far deeper CRM integration, better reporting, and a free tier, and it is the safer default. Success.ai is cheaper per contact at small volumes, gives unlimited mailboxes where Apollo's sending is more constrained, and includes intent at a lower price point. Apollo for a sales team that lives in a CRM; Success.ai for outbound run as its own program.
Choose Apollo.io if
Startups and SMB sales teams that want the largest self-serve contact database and outreach execution in one affordable product.
Choose Success.ai if
Small sales teams and founders who need both a prospect list and a way to send to it, want unlimited mailboxes without a per-inbox fee, and would rather pay for the contacts they actually reveal than for a separate data subscription they underuse.
Side by side
13 attributes| Attribute | Apollo.io | Success.ai |
|---|---|---|
| Category | Data | Cold Email |
| Starting price | Free plan; paid from $49/user/mo | $49 per month, or $37 per month billed yearly (Lite) (free trial) |
| Pricing model | Freemium with per-user monthly tiers; credits meter email reveals (generous) and phone/export credits (tighter). Self-serve through Organization tier; custom above. | Four plans that all include the whole platform; what changes is the monthly token balance and the email volume. Tokens are spent across data reveals, enrichment, verification, intent signals, and AI writing at published per-action rates. Email accounts are unlimited on every tier. |
| Free plan | Free forever: limited credits, 2 sequences, basic filters. | No |
| Free trial | 14 days (of paid features) | None published on the pricing page |
| Best for | Startups and SMB sales teams that want the largest self-serve contact database and outreach execution in one affordable product. | Small sales teams and founders who need both a prospect list and a way to send to it, want unlimited mailboxes without a per-inbox fee, and would rather pay for the contacts they actually reveal than for a separate data subscription they underuse. |
| Setup time | Minutes to first list on free tier; a week to wire CRM enrichment rules and team sequences properly. | An afternoon to a first campaign, and less if mailboxes already exist: connect accounts, build a segment, reveal a few hundred contacts, generate a sequence, and schedule. The gating item is warming, which needs two to four weeks on new domains before volume, and no platform changes that. |
| Learning curve | Low for prospecting; moderate for admin surface (credit policies, enrichment rules, plays). | Low. Search, reveal, sequence, send is a straightforward path, and the token rate card makes cost consequences legible rather than mysterious. The judgment that takes longer is reading intent signals well, since intent is easy to over-trust and the platform will not tell you when a signal is noise. |
| Platforms | Web app, Chrome extension, iOS app, REST API | Web app, Chrome extension, REST API |
| Compliance | SOC 2 Type II, GDPR program, CCPA | The vendor states GDPR and CAN-SPAM alignment, Real-time email verification before sending, Unsubscribe handling with suppression across campaigns, No SOC 2 or ISO 27001 certification published |
| Founded | 2015 | 2022 |
| Headquarters | San Francisco, California, US | Sheridan, Wyoming, United States |
| Ownership | Venture-backed (private) | Privately held |
Strengths and limitations
Apollo.io
Strengths
- Unmatched self-serve coverage-per-dollar; the price floor of the entire category.
- Data + engagement in one product removes the export/import loop entirely.
- Free tier and transparent pricing make evaluation frictionless.
- Enrichment/dedupe layer quietly excellent for CRM hygiene.
Limitations
- Direct-dial accuracy trails phone specialists (Lusha, Cognism) in many segments.
- Engagement layer lacks enterprise governance, CI depth, and forecasting.
- Credit mechanics (phone/export) complicate the headline pricing.
- EU data compliance posture is workable but not the selling point Cognism makes it.
Success.ai
Strengths
- Data and sending on one subscription at a price below what most teams pay for either alone.
- Unlimited searching with metering only on reveal, so a segment can be explored properly before any budget is committed.
- Buyer intent signals at a price point where competitors offer only static firmographic filters, charged per signal rather than gated behind a tier.
- Unlimited email accounts with warming included on every tier including the $37 entry plan.
Limitations
- Campaign analytics are shallow relative to dedicated sending platforms, and this is the most consistent criticism across independent reviews.
- Deliverability complaints appear in user reviews, so a trial on your own domains with a placement test is necessary rather than optional.
- Database quality varies by segment, as it does for every provider of this scale, and the 700 million figure says nothing about coverage of your particular niche.
- Company documentation is thin: no published founders, no headcount, and a Wyoming registration that tells a buyer very little about who operates the platform.
Pricing compared
Apollo.io
Freemium with per-user monthly tiers; credits meter email reveals (generous) and phone/export credits (tighter). Self-serve through Organization tier; custom above.
- Free$0
- Basic$49
- Professional$79
- Organization$119
Nothing matches Apollo's coverage-per-dollar; it reset the category's price floor and forced legacy vendors into defensive bundling. The honest caveats: dial accuracy trails specialists, and heavy exporters discover credits are the true price. As a first data stack or a waterfall's volume layer, it remains the obvious call.
Success.ai
Four plans that all include the whole platform; what changes is the monthly token balance and the email volume. Tokens are spent across data reveals, enrichment, verification, intent signals, and AI writing at published per-action rates. Email accounts are unlimited on every tier.
- Lite$49
- Starter$99
- Pro$199
- EnterpriseCustom
As a bundle this is priced well below its parts. Two thousand tokens a month plus 5,000 emails, unlimited mailboxes, warming, and an AI writer at $37 billed yearly compares with roughly $50 to $100 for a data subscription alone and $30 to $40 for a sending platform alone. The value depends entirely on the database being good enough for your segment, which is not something any review can settle for you, and on the reporting being sufficient, which for a straightforward program it is and for a heavily tested one it is not. Buy it as a bundle or do not buy it: as a sender alone it is beaten by cheaper, deeper tools, and as a data source alone it is beaten by the specialists.
Editorial verdict on each
Apollo.io
Category LeaderApollo is the gravitational center of self-serve B2B data: coverage that reset the market's price floor, fused to an engagement layer that genuinely eliminates the export loop for SMBs. Its honest weaknesses, dial accuracy, credit fine print, mid-depth engagement, haven't slowed the flywheel because nothing else offers this much stack per dollar. Start here; add specialists only where measurement says Apollo falls short.
Read the full Apollo.io profileSuccess.ai
Success.ai is a bundle, and it should be judged as one. Data and sending together at $37 a month billed yearly is priced below what most teams pay for either half, unlimited mailboxes and warming come with every tier, and buyer intent at that price is not on offer anywhere else in this category. Against that, the sender is competent rather than excellent, the analytics are the weakest part of the product by consensus, deliverability complaints show up often enough in reviews to make a trial on your own domains mandatory, and the company behind it publishes no founders, no headcount, and no certifications. The recommendation follows the meter: if your problem is that you have no list, this is one of the cheapest credible ways to solve it and start sending in the same afternoon. If you already have data you trust, you are buying the expensive half twice and a dedicated sending platform will serve you better. Sample the database properly during the fourteen days, because that single question decides the whole purchase.
Read the full Success.ai profileApollo.io profile last reviewed 2026-09-26; Success.ai last reviewed 2026-09-19. Pricing is compiled from public sources and can change without notice. See our methodology.
The best in B2B Data Providers
26 trackedB2B data providers supply the contact and company information (emails, phone numbers, firmographics, and buying signals) that feeds prospecting lists and enrichment workflows.
The largest self-serve contact database in the category, fused with sequencing, data and execution in one product.
Accurate direct dials and a genuinely usable free tier make Lusha the lowest-friction entry point into paid B2B data.
Founded in 2022 and already at 40,000 users, Prospeo shipped AI Search, lookalikes, and an MCP server in 2025 as its database passed 280M leads.
Semantic search over the live web with contact data attached made prospecting a language problem rather than a database subscription.
Signup to verified emails in five minutes with zero configuration, and failed searches cost nothing, so nobody needs training to get value from Anymailfinder.
The best in Cold Email Outreach
20 trackedCold email outreach platforms let sales teams send personalized email campaigns to prospects at scale, with sending-account rotation, sequencing, and reply management.
Unlimited sending-account architecture with built-in warm-up made Instantly the default answer to scaling cold email safely.
Unlimited mailboxes and warm-up on every paid tier gives Smartlead the strongest capability floor at entry price in the category.
Leads, domains, inboxes, warm-up, and scripts arrive pre-assembled behind a concierge onboarding call, the easiest standing start in cold email.
Frequently asked questions
6 questionsWhat is the difference between Apollo.io and Success.ai?
The closest comparison on concept: a large B2B database with sequencing attached. Apollo is the more established product with far deeper CRM integration, better reporting, and a free tier, and it is the safer default. Success.ai is cheaper per contact at small volumes, gives unlimited mailboxes where Apollo's sending is more constrained, and includes intent at a lower price point. Apollo for a sales team that lives in a CRM; Success.ai for outbound run as its own program.
Is Apollo.io or Success.ai cheaper?
Apollo.io starts at Free plan; paid from $49/user/mo. Success.ai starts at $49 per month, or $37 per month billed yearly (Lite) (free trial). The billing models differ, so the entry price is rarely the whole cost. Apollo.io pricing model: Freemium with per-user monthly tiers; credits meter email reveals (generous) and phone/export credits (tighter). Self-serve through Organization tier; custom above. Success.ai pricing model: Four plans that all include the whole platform; what changes is the monthly token balance and the email volume. Tokens are spent across data reveals, enrichment, verification, intent signals, and AI writing at published per-action rates.
Does Apollo.io or Success.ai have a free plan?
Apollo.io has a free plan. Free forever: limited credits, 2 sequences, basic filters. Trial terms: 14 days (of paid features). Success.ai has no free plan. Trial terms: None published on the pricing page.
Who should choose Apollo.io?
Startups and SMB sales teams that want the largest self-serve contact database and outreach execution in one affordable product.
Who should choose Success.ai?
Small sales teams and founders who need both a prospect list and a way to send to it, want unlimited mailboxes without a per-inbox fee, and would rather pay for the contacts they actually reveal than for a separate data subscription they underuse.
What are the best alternatives to Apollo.io and Success.ai?
SaaSTracker profiles 26 products in B2B Data Providers. The Summer 2026 awards in the category went to Lusha (Best Value), Prospeo (Momentum), Exa (Innovation). SaaSTracker profiles 20 products in Cold Email Outreach. The Summer 2026 awards in the category went to Instantly (Category Leader), Smartlead (Best Value), ListKit (Ease of Use). Every profile is compiled from primary sources, so a shortlist can be built from pricing, limitations, and fit rather than from star ratings.