The AI-powered B2B sales platform that replaces your data provider, outreach tool, dialer, enrichment engine, and CRM — 210M+ contacts, smart sequences, and AI agents, all in one platform.
Try Apollo.io
The all-in-one lead generation and multichannel outreach platform — find, verify, warm up, and email 3 million+ users' worth of prospects on autopilot.
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Apollo.io
Snov.io
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Apollo.io
Snov.io
Apollo.io is an AI-powered B2B sales intelligence and engagement platform co-founded in 2015 by Tim Zheng and Ray Li in San Francisco. It gives sales teams access to 210M+ contacts and 30M+ companies with 65+ search filters, AI-powered multichannel outreach sequences, real-time data enrichment, inbound lead routing, conversation intelligence, and AI sales agents — all from one platform.
Backed by $251.3M in funding at a $1.6B valuation, trusted by 500,000+ companies from startups to Fortune 500s, and rated 4.7/5 from 9,015+ G2 reviews, it is the most widely used and reviewed all-in-one sales platform in the market.
Snov.io is an all-in-one lead generation and multichannel outreach platform founded in 2017 by Oleksii Kratko, headquartered in New York with operations in Ukraine. It enables sales teams, agencies, and founders to find and verify leads, warm up email inboxes, run automated email and LinkedIn campaigns, and manage deals — all from a single platform used by 3 million+ users in 175+ countries.
With a 50-million-company B2B database, 7-tier email verification, AI Studio, and a built-in Sales CRM, Snov.io covers the entire outbound sales workflow without external integrations for its core features.
• 210M+ Contact Database with 65+ Advanced Filters — Search the world's largest B2B contact database by job title, seniority level, company size, industry, location, technology stack, funding stage, hiring signals, and buyer intent data to build hyper-targeted prospect lists for any ICP.
• AI-Powered Multichannel Sequences — Build automated outreach campaigns combining email, LinkedIn touches, phone calls, and task reminders in one coordinated sequence; includes A/B testing, send-time optimization, email deliverability guardrails (SPF/DKIM/DMARC checks, spam word detection, bounce management), and reply detection that auto-pauses follow-ups.
• AI Sales Agents (SDR Agent, Research Agent, Deals Agent, GTM Agent) — Four specialized AI agents automate the most time-intensive GTM tasks: the AI SDR Agent builds and runs outbound campaigns autonomously; the Research Agent enriches lead records with real-time company data; the Deals Agent prepares reps for every conversation with meeting intelligence; the GTM Agent orchestrates cross-functional go-to-market workflows.
• Inbound Intelligence (Visitor ID + Form Enrichment + Lead Routing) — Identifies anonymous website visitors, enriches form submissions with Apollo's full contact and company data in real time, and instantly routes qualified leads to the right rep via built-in calendar scheduling and automated nurture sequences — preventing hot inbound leads from going cold.
• Data Enrichment & CRM Cleansing — Continuously enriches and cleanses contact and company records across your CRM with always-fresh data from Apollo's network; supports Salesforce, HubSpot, and custom CRM enrichment workflows with job change alerts and signal-based re-engagement triggers.
• Conversation Intelligence & Deal Execution — AI-powered call recording, transcription, call summaries, next-step generation, pipeline boards, real-time deal alerts, conversation coaching dashboards, and meeting prep briefs keep every deal moving and every rep developing.
• Built-In Dialer & Email Infrastructure — Native click-to-call dialer with local presence, call recording, and voicemail drop; dedicated email sending infrastructure with deliverability guardrails and custom tracking domains — no external dialer or email service required.
• Apollo Academy + 24/7 AI Help + Community — Always-on educational resources including Apollo Academy courses, tutorials, weekly webinars, a community forum, and 24/7 AI chat support; live personalized onboarding included on all paid plans.
• AI-Powered Lead Database & Email Finder — Search 50M+ company profiles and find verified email addresses by name, domain, ICP, or directly from LinkedIn using Database Search, Domain Search, Email Search, LinkedIn Search, and the Chrome extension; 98% claimed accuracy rate.
• 7-Tier Email Verification with Graylisting Bypass — Verifies every email address through seven validation layers including syntax, DNS, MX record, SMTP, and catch-all detection, with graylisting bypass for more precise deliverability confirmation before sending.
• Automated Email Warm-Up — Prepares unlimited mailboxes for cold outreach with progressive or steady warm-up modes, AI-generated email content, premium warm-up pool, template warm-up, custom tracking domain warm-up, plain text warm-up, and dynamic proxy for accounts with persistent deliverability problems.
• Multichannel Drip Campaigns — Build unlimited multi-step email sequences with behavioral conditions, A/B testing, spintax, if/then dynamic content, mailbox rotation, Calendly booking tracking, reply detection, sentiment analysis, and in-depth per-recipient statistics.
• LinkedIn Automation (Add-On at $69/slot) — Automates profile views, post likes, connection requests, messages, InMail, and follows natively within multichannel campaigns; includes built-in location-based proxy, daily action limit controls, and SSI score analysis for account safety.
• AI Studio (Buyer Persona Generator + Email Builder) — Generates ICP profiles from your product description using AI, uncovers your strongest unique selling points per persona, and builds reply-focused email sequences tailored to each ICP — no prompt engineering required.
• Deliverability Check Suite — Monitors domain health (SPF, DKIM, DMARC), tests email inbox placement, detects spam trigger words, checks domain and IP blacklists, scores emails with SpamAssassin, and provides personalized step-by-step deliverability fix tutorials.
• Built-in Sales CRM — Manages deals across 20 customizable pipelines (up to 100 stages each), creates up to 10,000 deals, syncs tasks to Google Calendar, tracks deal loss reasons, supports multicurrency, and enables full team collaboration — all without leaving Snov.io.
Apollo.io serves a wider range of sales teams than any other tool in its category — from first-time SDRs on the free plan to Fortune 500 enterprise GTM teams on custom Organization plans.
• SDRs and outbound sales reps at growth-stage companies — use Apollo's 210M+ database with 65+ filters to build highly targeted prospect lists, launch automated multichannel sequences, and manage call tasks from one platform without juggling multiple tool subscriptions.
• Founders and solo sales operators doing outbound — start on the free plan with 100 credits and unlimited email sends to validate ICP fit before investing in paid prospecting; upgrade to Basic at $49/mo only when volume demands it.
• Revenue operations and sales managers — use Apollo's enrichment workflows to keep CRM data fresh, leverage AI agents to automate SDR-level tasks, and use conversation intelligence and coaching dashboards to identify performance gaps and replicate top-rep behaviors across the team.
• Enterprise GTM teams consolidating tech stacks — replace a 5-tool stack (ZoomInfo + Outreach/SalesLoft + Gong + Clearbit + Salesforce enrichment) with Apollo's Organization plan and AI agents to reduce per-rep tool costs while centralizing data, outreach, and deal intelligence in one governed platform.
Snov.io serves the broadest range of outreach users of any tool in its category — from first-time cold emailers to agencies running enterprise outreach at scale.
• Solo founders and freelancers — start free with the Trial plan, validate data quality for their niche, and scale to the $39/mo Starter only when campaign volume demands it; unlimited team members means adding a VA or assistant costs nothing extra.
• B2B sales teams at SMBs and growth-stage startups — use Pro S ($74.25/mo annual) to access unlimited mailboxes for warm-up, AI Studio for ICP-driven email copy, behavioral conditions for smart follow-up sequences, and reply sentiment analysis to prioritize hot leads without manual inbox triage.
• Lead-generation agencies managing multiple client campaigns — benefit from shared team credit pools, unlimited campaigns, the BCC-to-CRM feature for client pipeline reporting, and data access permission management to control what team members and client contacts can see.
• Recruiters and talent sourcers — use Database Search and LinkedIn Email Finder to surface candidate contacts without a LinkedIn Recruiter subscription, verify emails before outreach to protect sender reputation, and run structured follow-up sequences with reply detection that auto-pauses when candidates respond.
Free ($0/mo, unlimited users): 100 credits total (not per month), unlimited B2B email sends (Gmail and Microsoft only), basic sequence automation, access to full 210M+ contact database with limited filters, basic email open/click tracking, limited CSV export, HubSpot and Salesforce basic integrations, Apollo Academy access, 24/7 AI chat support.
Basic ($59/mo monthly, $49/user/mo billed annually): 5,000 credits/month, unlimited email sends (all email providers), full sequence automation with A/B testing, all 65+ database filters, email deliverability center, job change alerts, buy intent data (basic), advanced integrations (HubSpot, Salesforce, Pipedrive, Outreach, SalesLoft), CSV export (unlimited), LinkedIn extension, click-to-call dialer, call recording, live onboarding, 24/7 AI chat + email support.
Professional ($99/mo monthly, $79/user/mo billed annually): 10,000 credits/month, everything in Basic plus AI-assisted email writing, advanced filters and intent signals, email reply tracking, conversations (call intelligence), deal management, advanced reporting, custom fields, sequence analytics, video prospecting, AI research assistant, LinkedIn automation steps in sequences, priority support.
Organization ($149/mo monthly, $119/user/mo billed annually, minimum 3 users): 15,000 credits/month, everything in Professional plus AI SDR Agent, AI Deals Agent, AI GTM Agent, inbound visitor identification, real-time form enrichment, lead routing and scheduling, advanced CRM enrichment and cleansing, custom roles and permissions, SSO (SAML), advanced security settings, data privacy controls, custom reporting, dedicated onboarding, phone support, CSM access.
Trial ($0/mo): 50 credits, 100 campaign recipients/month, 1 warm-up mailbox (15 msgs/day), 450 one-time warm-up emails, unlimited team members, basic Database Search, Chrome extension, Email Tracker, REST API access.
Starter ($39/mo or $29.25/mo annual): 1,000 credits, 5,000 campaign recipients/month, 3 warm-up mailboxes (50 msgs/day), 4,500 warm-up emails/month, auto-verification, AI Writing Tools, AI Studio Persona-driven Email Builder (unlimited), all campaign features including A/B testing, behavioral conditions, sentiment analysis, HubSpot and Pipedrive integrations, unlimited team members.
Pro S ($99/mo or $74.25/mo annual): 5,000 credits, 25,000 campaign recipients/month, unlimited warm-up mailboxes (100 msgs/day each), unlimited monthly warm-up volume, premium warm-up pool, all Starter features plus advanced warm-up strategies, template warm-up, custom tracking domain warm-up, spintax for warm-up, plain text warm-up, dynamic proxy, priority support.
Pro M ($189/mo or $141.75/mo annual): 20,000 credits, 50,000 campaign recipients/month, unlimited warm-up mailboxes (200 msgs/day each), all Pro S features.
Pro L ($369/mo or $276.75/mo annual): 50,000 credits, 100,000 campaign recipients/month, unlimited warm-up mailboxes (500 msgs/day each), all Pro M features.
Pro Ultra ($738/mo or $553.50/mo annual): 100,000 credits, 200,000 campaign recipients/month, unlimited warm-up mailboxes (1,000 msgs/day each), all Pro L features.
LinkedIn Automation (Add-On, all plans): $69/mo per account slot; includes multichannel email + LinkedIn campaigns, built-in location-based proxy, daily action limit controls, InMail, connection requests, messages, follows, post likes, profile views, SSI score analysis.
Apollo.io's competitive position rests on three structural advantages that no single competitor has simultaneously replicated: database scale, product breadth, and product-led growth velocity.
• 210M Contact + 30M Company Database With Continuously Refreshed Intent Data — Apollo's database is among the largest in B2B sales intelligence, and unlike static databases, Apollo refreshes contact and company data continuously using AI-driven verification. The addition of buyer intent signals — tracking which companies are actively researching topics relevant to your product — lets Apollo users prioritize outreach to the accounts most likely to convert right now, not just the accounts that fit the ICP. No tool at Apollo's price range offers both this scale and intent data natively.
• Four Specialized AI Agents Replacing Human Labor Across the GTM Funnel — Apollo's AI SDR Agent, Research Agent, Deals Agent, and GTM Agent are not generic chatbots — they are purpose-trained agents that automate specific GTM tasks: building and running outbound campaigns (SDR Agent), enriching and briefing reps before meetings (Research Agent and Deals Agent), and orchestrating cross-functional go-to-market workflows (GTM Agent). The depth of task automation across all four stages of the funnel — find, engage, meet, close — is matched only by custom AI-agent stacks costing 5x+ the price.
• Inbound + Outbound in One Platform (Visitor ID + Form Enrichment + Lead Routing) — Apollo is one of the only platforms in its price range that handles both outbound prospecting and inbound lead capture in a single workflow. Anonymous visitor identification surfaces the companies behind your website traffic, form enrichment completes lead records in real time, and instant lead routing with built-in scheduler ensures hot inbound leads are contacted within minutes. Most sales teams run a separate tool for each of these functions — Apollo's unification produces the 70% increase in lead conversion its customer base reports.
• Product-Led Growth at $1.6B Scale — Apollo's free plan is genuinely functional — not a feature-crippled demo — and it is the reason 500,000+ companies have adopted it without a sales call. This PLG flywheel funds continuous product investment: Apollo grew ARR 40% in 2024 and reported 500% growth on its AI platform in 2025, enabling R&D velocity that bootstrapped competitors simply cannot match.
Snov.io stands out by combining every major component of the outbound sales workflow — data, verification, infrastructure, campaigns, LinkedIn, deliverability, AI, and CRM — into one platform that starts free and scales without switching tools.
• 7-Tier Email Verification with Graylisting Bypass — Most email finders perform 3–4 verification checks. Snov.io's 7-tier process adds graylisting bypass, which forces a response from mail servers that intentionally delay verification attempts to filter out bulk senders. This layer catches a category of false negatives that standard verifiers miss entirely, and it is the primary driver of Snov.io's claimed 98% accuracy rate.
• Built-In Email Warm-Up at Every Tier — Most email outreach platforms treat warm-up as a paid add-on or a separate tool. Snov.io includes it on every plan — including the free Trial — with AI-generated email content, progressive and steady warm-up modes, template warm-up to pre-season specific email content, and plain text warm-up to build early sender reputation faster. Unlimited warm-up mailboxes are available from Pro S upward.
• AI Studio: ICP-to-Email Without Prompting — The AI Buyer Persona Generator takes your product description and generates multiple ICPs, explores unique selling points per persona, and hands off to the Persona-driven Email Builder which produces a complete, reply-optimized email sequence — all without the user writing a single AI prompt. This end-to-end AI workflow is substantially more guided than standard AI writing assistants.
• Deliverability Check as a Native Suite — Snov.io includes a complete, standalone deliverability monitoring suite that most competitors sell separately: domain health checks, inbox placement tests, spam word detection, SpamAssassin scoring, domain and IP blacklist detection, sender score tracking, and personalized step-by-step fix tutorials. Having this natively means teams catch and fix deliverability issues before campaigns launch, not after bounce rates spike.
Apollo.io integrates with every major CRM, sales engagement platform, marketing automation tool, and communication platform used by modern B2B sales and marketing teams.
• Salesforce & HubSpot (Deep Bidirectional Native Sync) — Full two-way sync with Salesforce and HubSpot including contact creation, deal and opportunity management, activity logging, sequence enrollment triggers, custom field mapping, and advanced CRM data enrichment that continuously refreshes stale contact and company records; available from Basic plan with advanced features on Organization.
• Outreach, SalesLoft & Marketo (Sales Engagement + Marketing Automation) — Native integrations with Outreach and SalesLoft allow teams already on those platforms to use Apollo purely as a data layer, pushing enriched contacts into existing sequences; Marketo and Sendgrid integrations connect Apollo's data and intent signals to marketing automation and email delivery infrastructure.
• LinkedIn (Chrome Extension + Sequence Steps) — Apollo's LinkedIn Chrome extension enriches any LinkedIn profile with Apollo data in one click; Professional plan and above adds LinkedIn automation steps (connection requests, messages, InMail) directly inside Apollo sequences, enabling true multichannel outreach without a separate LinkedIn tool.
• Zapier, Webhooks & Full API (Organization and Custom Plans) — Zapier integration connects Apollo to 5,000+ external tools; real-time webhooks fire on lead events (new contact, email opened, reply received, job change detected) for custom GTM stack integration; the full REST API is available on Organization and Custom plans for engineering-led teams building Apollo's data and engagement layer into proprietary workflows.
Snov.io connects to the CRMs, automation platforms, and productivity tools that sales and marketing teams already use, with a deep native integration library and open API.
• HubSpot & Pipedrive (Native Two-Way Sync) — Syncs prospects, email activity, and deal stages bidirectionally with HubSpot and Pipedrive; Pipedrive Automations lets Snov.io trigger routine Pipedrive actions automatically based on lead engagement events in campaigns.
• Zapier & Make (Integromat) — Connects Snov.io to 5,000+ external apps via Zapier for automated lead imports, CRM updates, and notification workflows; Make's no-code visual builder enables complex multi-step automation with conditional logic without writing code.
• Calendly, PhantomBuster & Hyperise — Calendly integration tracks meeting bookings as campaign triggers; PhantomBuster powers advanced LinkedIn lead generation workflows that feed directly into Snov.io; Hyperise auto-personalizes visual content in emails for higher engagement without manual image editing.
• REST API, Webhooks & Chrome Extension — The REST API integrates Email Finder and Email Verifier directly into any external platform; Data Enrichment API auto-fills lead records with email, LinkedIn data, and verification status; 50 webhook slots trigger real-time alerts for key lead engagement actions; the 4.9-rated Chrome extension (5.8K+ ratings, 400,000+ users) finds and verifies emails on any website or Google results page in one click.
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