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AI SDR

Apollo.io

by Apollo.io

★4.5

448 reviews

End-to-end B2B sales intelligence and engagement platform with 265M+ contacts, AI-powered research, and multi-channel outreach automation

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📌Key Takeaways

  • 1Apollo.io is a ai sdr AI agent by Apollo.io, founded in 2015.
  • 2End-to-end B2B sales intelligence and engagement platform with 265M+ contacts, AI-powered research, and multi-channel outreach automation
  • 3Top strengths: Massive B2B database with 270M+ verified contacts and 30M+ companies, continuously enriched by AI for high data accuracy and low bounce rates.; All-in-one platform combines prospecting, sequencing, CRM sync, and analytics - eliminates need for multiple point solutions and reduces tool sprawl..
  • 4Rated 4.5/5 based on 448 reviews.

Category

AI SDR

Founded

2015

Headquarters

San Francisco, USA

Overview

Apollo.io is an AI‑driven sales development platform that combines a massive B2B contact database (over 270 million contacts and 35 million companies) with generative‑AI tools to automate prospecting, outreach, and deal execution. The platform unifies lead discovery, data enrichment, AI‑powered email and LinkedIn messaging, sequencing, call logging, and pipeline management in a single web‑based interface, eliminating the need for multiple point solutions. Target users include inside sales reps, SDRs, account executives, marketing teams, and customer‑success professionals who need to run multi‑channel campaigns at scale while maintaining personalization. Apollo’s AI Outbound Copilot automatically builds target lists, adds prospects to sequences, and drafts personalized emails using the AI Writing Assistant. AI Filters and Lookalike search quickly surface highly relevant accounts, and the AI‑generated lead scores prioritize the most conversion‑ready prospects. The platform integrates natively with major CRMs (Salesforce, HubSpot) and email providers, syncing activity in real time. Recent product launches, such as the fully agentic end‑to‑end GTM engine (Vibe GT M), allow AI agents to orchestrate the entire revenue workflow—from prospect identification to deal closure—making the experience feel like “texting a friend.” Customers range from fast‑growing startups to Fortune 500 enterprises (e.g., Autodesk, ClickUp, DocuSign). According to G2’s 2025‑2026 reports, Apollo holds the top rating for data availability, ease of setup, and quality of support, and it has earned over 600 G2 badges, underscoring its market leadership. By consolidating prospecting, enrichment, sequencing, and analytics, Apollo helps sales teams reduce manual data entry, accelerate outreach, and increase meeting conversion rates by up to 35 % compared with manual processes, delivering a measurable ROI for both SMBs and large organizations.

🎯 Key Differentiator

AI-Extracted

Fully agentic end‑to‑end GTM platform with AI agents that orchestrate prospecting, engagement, and deal execution across the entire sales funnel

Apollo.io introduced the industry’s first fully agentic GTM platform in Oct 2025, enabling AI assistants to automate list building, outreach sequencing, and deal workflow without manual intervention (source 12).

This differentiator was AI-extracted from competitive research.

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Last verified: January 27, 2026

Key Features

Massive AI‑enhanced contact database

Provides access to over 270 million verified contacts and 30 million companies, continuously enriched by AI algorithms that validate emails, phone numbers, and firmographic data, ensuring high‑quality prospect lists for outbound campaigns. Higher lead accuracy reduces bounce rates and improves conversion.

Multi‑channel sequence automation

Allows users to create email, phone, LinkedIn, and social media sequences with conditional triggers, A/B testing, and automated follow‑ups, all managed from a single dashboard. Saves time and ensures consistent outreach cadence.

Integrated CRM and data enrichment

Bidirectional sync with Salesforce, HubSpot, Microsoft Dynamics, Pipedrive and others, plus real‑time enrichment that updates contact records with new job changes, intent signals, and company data. Eliminates duplicate data entry and keeps the sales pipeline up‑to‑date.

AI Assistant & AI Projects

AI‑driven assistants generate personalized email copy, recommend next‑best actions, and can be prompted to build targeted prospect lists or trigger workflows, acting as a co‑pilot throughout the sales process. Accelerates content creation and improves relevance of outreach.

Advanced analytics & reporting

Tracks sequence performance, open/click/reply rates, buyer intent scores, and provides built‑in dashboards for A/B testing, pipeline forecasting, and revenue attribution. Gives sales leaders data‑driven insights to optimize strategies.

Pros & Cons

Pros

  • +Massive B2B database with 270M+ verified contacts and 30M+ companies, continuously enriched by AI for high data accuracy and low bounce rates.
  • +All-in-one platform combines prospecting, sequencing, CRM sync, and analytics - eliminates need for multiple point solutions and reduces tool sprawl.
  • +AI-powered email writer and assistant generates personalized outreach at scale, recommends next-best actions, and builds targeted prospect lists from natural language prompts.
  • +Bidirectional CRM integration with Salesforce, HubSpot, and others keeps data synchronized in real-time and eliminates duplicate data entry.
  • +Flexible pricing with free tier and credit-based model makes enterprise-grade sales intelligence accessible to startups and SMBs.

Cons

  • −Credit system can be confusing - mobile numbers cost extra credits, and heavy users may find credit consumption adds up quickly.
  • −Data accuracy varies by region - while US/EU contact data is strong, international markets may have less reliable information.
  • −Per-user pricing on higher tiers can become expensive for large sales teams compared to flat-rate competitors.
  • −Learning curve for advanced features - workflow automation and AI assistant require time to configure optimally.

Use Cases

Explore all AI SDR use cases →

Automated Lead Prioritization Using Workflows→

Sales teams often waste hours manually filtering inbound leads, leading to delayed follow‑up, missed opportunities, and inconsistent qualification standards across reps. In high‑growth SaaS companies, the volume of leads can overwhelm SDRs, causing bottlenecks that reduce conversion rates and increase churn risk.

Account‑Based Sales Motion Automation→

ABM initiatives require precise targeting of a limited set of high‑value accounts, but manual identification of key contacts across multiple subsidiaries, plant locations, and decision‑maker hierarchies is time‑consuming and error‑prone, leading to fragmented outreach and low engagement.

AI Assistant for Rapid List Building→

Financial sales teams must constantly generate prospect lists that meet strict compliance standards, yet manual research across multiple data sources leads to delays, inconsistent data quality, and regulatory risk.

Integrated CRM Sync for Real‑Time Data Hygiene→

Healthcare vendors often struggle with outdated contact records, leading to missed outreach opportunities and wasted effort contacting inactive decision‑makers, which is especially costly given long sales cycles and strict data‑privacy regulations.

Multi‑Channel Outreach with AI‑Generated Content→

E‑commerce brands need to engage prospects across email, LinkedIn, and phone, but crafting personalized copy for each channel is labor‑intensive, leading to generic messaging that fails to resonate with busy merchants.

Frequently Asked Questions

End-to-end B2B sales intelligence and engagement platform with 265M+ contacts, AI-powered research, and multi-channel outreach automation. Integration capabilities depend on your tech stack and requirements. Most modern platforms offer native integrations with popular tools, webhook support, and REST APIs for custom connections. Implementation complexity varies based on your specific use case and existing infrastructure.
Apollo.io offers: 265M+ contact database, AI-powered lead research and personalization, Email sequences and automation. This functionality is designed to streamline workflows and improve efficiency. Features may include automation, analytics, reporting, and collaboration tools. Specific capabilities depend on the plan level and product version you choose. Advanced features may require add-ons or enterprise plans.
Massive database with advanced filtering. All-in-one platform reduces tool sprawl. Strong integrations with CRMs. Integration capabilities depend on your tech stack and requirements. Most modern platforms offer native integrations with popular tools, webhook support, and REST APIs for custom connections. Implementation complexity varies based on your specific use case and existing infrastructure.
Credit system can be confusing. Mobile numbers cost extra credits. Per-user pricing adds up for large teams. Pricing may vary based on company size, features required, and contract length. Most providers offer tiered plans ranging from freemium options to enterprise packages with custom pricing. Check with the vendor directly for current pricing details and available discounts.
Apollo.io was founded in 2015. This varies based on your specific requirements, industry, company size, and use case. For detailed information tailored to your situation, consult with the vendor or implementation partner who can provide guidance based on their experience with similar organizations. Most providers offer demos, trials, or consultations to help you evaluate fit before committing.

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