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Apollo.io

Apollo.io

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.

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TimelinesAI

TimelinesAI

Sync every WhatsApp conversation to your CRM, manage multiple numbers in one shared inbox, and automate campaigns — without the WhatsApp Business API.

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Quick Comparison: Apollo.io vs TimelinesAI

A high-level overview of pricing, key strengths, and use cases to help you choose the right tool fast.

Features
Apollo.io
TimelinesAI
Quick View
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…
TimelinesAI is a WhatsApp CRM integration and team inbox platform that connects existing personal and business WhatsApp numbers — no WhatsApp Business API required —…
Pricing
Freemium: Starting at $49/mo
Free Trial: Starting at $25/seat/mo
Key Strength
• 210M+ Contact Database with 65+ Advanced Filters — Search the world's largest B2B contact database by job title, seniority…
• Native CRM Integration — connect one or multiple WhatsApp numbers (personal or business) to HubSpot, Pipedrive, Zoho CRM, Salesforce,…
Best For
Apollo.io serves a wider range of sales teams than any other tool in its category — from first-time SDRs on…
TimelinesAI is the right tool for any sales, support, or marketing team that runs customer conversations on WhatsApp and wants…

Detailed Feature Breakdown

Go deeper into the specific capabilities, pros, cons, and integrations of both platforms.

Features
Apollo.io
TimelinesAI
Overview

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.

TimelinesAI is a WhatsApp CRM integration and team inbox platform that connects existing personal and business WhatsApp numbers — no WhatsApp Business API required — to leading CRMs including HubSpot, Pipedrive, Zoho CRM, Salesforce, and monday.com.

It syncs all WhatsApp conversations, contacts, and attachments to CRM records in real time, provides a unified shared inbox for multi-number team management, and enables personalized bulk WhatsApp campaigns and no-code automation workflows. Trusted by 1,000+ teams across 34 countries, it has managed 10M+ WhatsApp messages.

Key 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.

• Native CRM Integration — connect one or multiple WhatsApp numbers (personal or business) to HubSpot, Pipedrive, Zoho CRM, Salesforce, or monday.com in minutes via QR code scan; every message, contact, attachment, and chat link syncs automatically to the correct CRM record with timestamps and sender metadata.

• Multi-Number Shared Inbox — bring all WhatsApp numbers across your team into one unified inbox; assign conversations to specific team members, set labels and custom filters, view contact segments, exchange internal notes, set Quick Reply templates, and track chat ownership — all from one interface.

• ChatGPT AI Autoresponder — configure an AI-powered autoresponder that uses ChatGPT to handle inbound WhatsApp messages automatically; available on the Shared Inbox plan and above for 24/7 first-response coverage without human intervention.

• Bulk Messaging & Campaigns — send personalized broadcast campaigns to thousands of WhatsApp contacts using CRM field merge tags; upload contact lists via CSV or Excel, use campaign wizard, include attachments (up to 50 MB on the Mass Messaging plan), and track campaign analytics.

• No-Code Workflow Automation — build visual automated WhatsApp workflows using a drag-and-drop builder; auto-route conversations to team members, trigger messages based on CRM events, connect to 1,000+ apps via native Zapier integration, and use scalable webhook automation.

• Chrome Extension with Embedded Chat View — install the TimelinesAI Chrome Extension to get an in-context WhatsApp chat panel inside any CRM interface; send and receive WhatsApp messages, use slash-command templates, and view full chat history without leaving your CRM tab.

• Real-Time Message Sync with Attachments — every inbound and outbound WhatsApp message — including images, documents, voice notes, and files up to 50 MB on Mass Messaging plan — is automatically saved to the linked CRM contact, lead, or deal as Notes with full metadata.

• Analytics and Reporting — track conversation volume, response times, team performance, chat assignment metrics, and campaign delivery analytics across all connected WhatsApp numbers from the TimelinesAI dashboard.

Pros
  • Permanently free plan with 100 credits, unlimited email sends (Gmail/Microsoft), and full database access — the most generous free tier in B2B sales intelligence, driving 500,000+ company signups
  • 4.7/5 from 9,015+ G2 reviews — the highest volume of verified reviews of any sales intelligence or outreach platform in the market
  • Replaces five separate tools (data provider, outreach platform, dialer, enrichment, CRM) — teams report 64% lower tech stack costs and 4x SDR efficiency improvement
  • Backed by $251.3M from Bain Capital Ventures, Sequoia Capital, and Tribe Capital at $1.6B valuation — financial stability and R&D investment that smaller bootstrapped tools cannot match
  • Four specialized AI agents (SDR, Research, Deals, GTM) automate the most time-intensive parts of the sales workflow with no additional tool purchase
  • Full compliance stack: GDPR, SOC 2, CCPA, ISO/IEC 27001, CASA Tier 2, CPRA, EU-US DPF, PCI DSS — the broadest enterprise-grade compliance certifications of any tool in its category
  • Job change alerts and intent signals surface the highest-probability buyers before competitors reach them
  • Works with existing personal AND business WhatsApp numbers — no expensive WhatsApp Business API account required
  • 10-day free trial with no credit card required — full functionality available from day one of the trial
  • One-click native CRM integrations with HubSpot, Pipedrive, Zoho, Salesforce, and monday.com — QR scan setup in under 2 minutes
  • ChatGPT AI autoresponder built in on the Shared Inbox plan — 24/7 automated first-response without a separate AI subscription
  • Around-the-clock chat support in 20+ languages included on all plans — confirmed on Zoho Marketplace listing
  • Rated 4.7/5 on Capterra from 112 reviews across 34 countries — consistent praise for integration accuracy and ease of setup
  • Native Zapier integration on all paid plans — connects to 1,000+ apps without custom code for advanced workflow automation
Cons
  • Credit system complexity — phone credits cost 8x more than email credits, credits expire at the end of each billing cycle (no rollover on standard plans), and overage credits at $0.20 each with a 250-minimum purchase add unexpected costs at volume
  • Organization plan requires a minimum of 3 users ($357/month annual minimum) — teams smaller than 3 seats cannot access advanced features like AI agents and custom reporting without paying per-user pricing
  • Data accuracy is strong globally but mixed for mobile phone numbers outside the US and Western Europe — European teams specifically report lower phone coverage than Kaspr or Cognism
  • Customer support quality on lower tiers receives consistent criticism across G2 and independent reviews — free and Basic plan users report slow response times and bot-first support experiences
  • Feature depth in some areas (call intelligence, advanced deal management) lags behind dedicated point solutions like Gong, Chorus, or Outreach — teams with mature revenue operations may still need specialist tools alongside Apollo
  • Historical data breach in 2021 (240M records exposed) remains a reputational concern for enterprise procurement teams conducting security due diligence, despite subsequent SOC 2 and ISO 27001 certification
  • Pricing is strictly per seat — each WhatsApp number connected also requires an additional seat purchase, which can make multi-number deployments costly
  • Bulk messaging and no-code visual workflow automation are locked to the Mass Messaging plan at $60/seat/month — unavailable on cheaper tiers
  • File attachment limit varies significantly by plan: 2 MB on CRM Integration, 10 MB on Shared Inbox, 50 MB on Mass Messaging — teams sharing large files need the top tier
  • Enterprise plan pricing is custom and undisclosed — larger teams cannot self-serve on pricing without contacting sales
  • No built-in WhatsApp Business API — for teams needing official Meta-certified messaging (green badge, verified templates), TimelinesAI is not the right tool
  • The platform is entirely WhatsApp-focused — teams needing a multi-channel inbox (SMS, email, Telegram) alongside WhatsApp will need additional tools
Best For

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.

TimelinesAI is the right tool for any sales, support, or marketing team that runs customer conversations on WhatsApp and wants those conversations automatically visible inside their CRM.

• Sales teams using Pipedrive or HubSpot — every WhatsApp lead message, attachment, and conversation thread logs to the right deal or contact automatically, eliminating manual copy-paste and ensuring full pipeline context is always current.

• Customer service teams across high-WhatsApp markets — businesses in healthcare, banking, e-commerce, and real estate across Latin America, South Asia, and Southeast Asia where WhatsApp is the primary support channel use the shared inbox to scale team capacity without scaling devices.

• Marketing teams running WhatsApp outreach — the Mass Messaging plan enables personalized bulk WhatsApp campaigns to segmented CRM contact lists without requiring a WhatsApp Business API account or Meta partner certification.

• Agencies managing multiple client WhatsApp numbers — per-seat, multi-number workspace management allows agencies to connect each client's WhatsApp numbers to their respective CRM instances from one TimelinesAI account.

• Operations managers centralizing team WhatsApp activity — the shared inbox's chat assignment, internal notes, labels, and performance analytics give operations managers full visibility into WhatsApp-based customer interactions across the whole team.

Pricing Details

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.

CRM Integration ($25/seat/month, ~$20/seat/month billed annually with 20% discount): Connect personal or business WhatsApp numbers to Pipedrive, HubSpot, Zoho CRM, Salesforce, or monday.com. Real-time bidirectional message sync, attachment sync (up to 2 MB per file), automatic contact and deal creation in CRM, WhatsApp chat link stored in CRM, native Zapier integration, inbound and outbound webhooks, Chrome Extension for embedded CRM chat view. Each additional WhatsApp number requires an additional seat.

Shared Inbox ($40/seat/month, ~$32/seat/month billed annually): Everything in CRM Integration plus multi-number unified team inbox, real-time collaborative message management, chat assignment and ownership tracking, custom contact views with filters and labels, internal team comments on WhatsApp chats, Quick Reply templates, ChatGPT AI Autoresponder, analytics reports, file attachments up to 10 MB.

Mass Messaging & Automation ($60/seat/month, ~$48/seat/month billed annually): Everything in Shared Inbox plus visual no-code workflow automation builder with pre-built templates, bulk WhatsApp broadcast campaigns, CSV and Excel contact list upload, TimelinesAI campaign wizard, custom contact limits, scalable webhook automation, bulk messaging attachment support, file attachments up to 50 MB, campaign analytics.

Business Plan (Custom pricing — contact sales): Customized features and limits for large organizations, advanced integrations, premium dedicated technical support, personalized onboarding.

All plans: 10-day free trial, no credit card required. Annual billing saves 20% across all plans.

Unique Features

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.

TimelinesAI's core differentiator is its ability to bridge any existing WhatsApp number — personal or business — directly into your CRM without requiring an official WhatsApp Business API account, Meta partner certification, or new phone number.

• No WhatsApp Business API Required — most WhatsApp CRM tools require an official WhatsApp Business API account costing $200–$500/month in setup and per-message fees; TimelinesAI works by QR code scan with any existing WhatsApp number, making it accessible to teams that have built relationships on their personal or existing business numbers.

• Per-Seat Multi-Number Architecture — each TimelinesAI seat can sync multiple WhatsApp numbers, and each number can be connected to a different CRM module or user; this multi-number model is designed specifically for businesses where different sales reps, support agents, or departments each have their own WhatsApp number.

• ChatGPT AI Autoresponder Built Into the Inbox — the AI autoresponder is natively integrated into the Shared Inbox plan without requiring a separate ChatGPT API subscription or third-party connection, making 24/7 first-response automation available to any team on the $40/seat tier.

• Chrome Extension with Embedded CRM Chat View — the Chrome Extension injects a live WhatsApp chat panel directly inside the CRM interface (HubSpot, Pipedrive, Zoho, Salesforce) so agents can send and receive WhatsApp messages, use slash-command templates, and view full chat history without switching tabs or apps.

• 24/7 Chat Support in 20+ Languages — around-the-clock multilingual support is included on all plans including during the free trial, a service level that most SaaS tools in this price range reserve for enterprise tiers only.

Integrations

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.

TimelinesAI connects to every major CRM and automation platform your sales and support team already uses.

• Native CRM integrations — HubSpot (Contacts, Deals, Workflows), Pipedrive (Persons, Deals, Activities), Zoho CRM (Leads, Contacts, Deals, custom modules), Salesforce, and monday.com all connect via one-click native integration — no middleware or custom code required; each integration syncs messages, contacts, attachments, and chat links to the correct CRM module automatically.

• Automation and workflow platforms — native Zapier integration on all paid plans connects TimelinesAI to 1,000+ additional apps including Google Sheets, Notion, Slack, Trello, Airtable, Mailchimp, and ActiveCampaign for custom cross-platform automation; Make (Integromat) is supported via webhooks for more complex multi-step workflows.

• AI and messaging tools — ChatGPT is integrated natively for the AI Autoresponder on the Shared Inbox plan; WhatsApp Web works as the underlying messaging layer for both personal and WhatsApp Business numbers via QR scan authentication.

• Developer and custom integration tools — inbound and outbound webhooks on all paid plans allow engineering teams to build custom triggers, real-time data pipelines, and event-driven automations between TimelinesAI and any internal system or proprietary platform.

• Browser integration — the Chrome Extension works inside HubSpot, Pipedrive, Zoho CRM, Salesforce, and any web-based CRM to embed an in-context WhatsApp chat view, enabling agents to send messages, use Quick Reply templates, and view conversation history without leaving their CRM.

Frequently Asked Questions

Expert Verdict

Final Analysis: Which is better?

After testing both platforms: choose Apollo.io (Freemium: Starting at $49/mo) if you prioritize Apollo.io serves a wider range of sales teams than any other tool in its category.. Choose TimelinesAI (Free Trial: Starting at $25/seat/mo) if you need TimelinesAI is the right tool for any sales, support, or marketing team that runs customer.. Both are reliable AI tool options, but they optimize for different user profiles.

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