Apollo vs Mailshake (2026): Features, Pricing & Best Use Cases

Choosing between Apollo and Mailshake comes down to one core question: do you need a standalone email outreach tool, or a platform that connects data, sequencing, and analytics in one place? Both platforms serve sales teams running outbound campaigns, but they differ significantly in scope, database depth, and how far into the GTM workflow they reach.

This comparison covers features, pricing, and the key differences that matter most to SDRs, AEs, RevOps leaders, and GTM teams evaluating their sales stack in 2026.

MANUAL LEAD RESEARCH

Research Less, Pipeline More With Apollo

Tired of burning hours verifying emails and hunting down contact info? Apollo delivers 240M+ verified contacts with 98% email accuracy so your reps spend time selling, not searching. Start building pipeline today.

Start Free with Apollo →

Key Takeaways

• Platform scope: Apollo combines prospecting data, multi-channel sequencing, a built-in dialer, and analytics in one connected system. Mailshake focuses on email automation and multi-channel outreach with a built-in Data Finder add-on for contact discovery.
• Sales intelligence: Apollo includes a database of 240M+ people with 98% email accuracy, built into every plan. Mailshake offers contact discovery through its Data Finder feature, available as an add-on or on higher tiers.
• AI capabilities: Apollo provides AI-powered sequencing, lead scoring, call summaries, and an AI Research Agent across its plans. Mailshake includes SHAKEspeare, an AI email writing assistant, on all tiers.
• Who each platform serves: Apollo serves B2B GTM teams, GTM Engineers, and AI Builders building headless GTM workflows with the Apollo API, CLI, and MCP, alongside Sales Professionals, SDRs/BDRs, AEs, RevOps, Marketing, and Revenue Leaders. Mailshake targets sales teams and SDRs focused primarily on outbound email and multi-channel sequences.
• Free access: Apollo offers a free tier. Mailshake does not list a free tier on its pricing page.

What is Apollo?

Apollo is an AI sales platform that unifies data, intelligence, and execution into one connected GTM system, giving teams everything from contact discovery and enrichment to sequencing, dialers, and analytics without switching tools. Apollo's database covers 240M+ people and 30M+ companies, and the platform is trusted by 100K+ paying customers and used by 100+ teams at Fortune 500 companies.

Apollo meets sellers where they already work. Apollo MCP, Apollo's Model Context Protocol, connects Apollo's data and workflows directly into AI assistants including ChatGPT, Codex, Claude, and Perplexity, so teams can prospect and enrich records without leaving their preferred environment. The Apollo Chrome extension enables prospecting across the web, and for technical users building headless GTM workflows, Apollo CLI provides terminal-native access to the full Apollo API.

According to Ramp's vendor data, Apollo holds a 38% adoption rate in the Sales Data Providers category as of July 2026, up 5 percentage points year-over-year, with 34% of first-time category buyers choosing Apollo as their first vendor in the space.

Apollo offers transparent pricing starting at $49/user/month (annual billing), with a free tier also available. Full plan details are in the Pricing Comparison section below. Apollo has earned recognition as a 2026 MarTech Breakthrough Award Winner for "Best AI-Powered Sales Solution" and holds a 4.7/5 G2 rating.

What is Mailshake?

Mailshake is a sales engagement and email automation platform designed for sales teams running outbound campaigns. It combines email sequencing, a power phone dialer, social outreach tasks, and a B2B contact discovery feature called Data Finder into one tool.

Mailshake's core offering centers on email automation: automated sequences with personalized follow-ups, A/B testing, email rotation, advanced scheduling and throttling, and a unified inbox for managing replies across campaigns. Deliverability support is included across all plans through unlimited email warmup and email verification.

On the Sales Engagement plan and above, Mailshake extends into multi-channel outreach with a power phone dialer, unlimited calling minutes to North American numbers, phone scripts, and the ability to create custom tasks. Users can also assign lead temperature scores and manage accounts at an organization level.

Mailshake's SHAKEspeare AI writing assistant is available on all plans and generates email copy based on campaign context. Data Finder, its B2B contact discovery feature, provides 50 free credits on Starter and Email Outreach plans, with 2,500 credits included on the Sales Engagement plan.

Additional Data Finder credits can be purchased as an add-on.

Integrations include Salesforce, Pipedrive, HubSpot, and 1,000+ tools via Zapier on Email Outreach and above. A browser extension is also included for prospecting from the web.

Mailshake serves sales teams and SDRs who need a straightforward outreach tool with a clear focus on email-first multi-channel campaigns. It suits teams looking to launch sequences quickly without requiring deep data infrastructure.

An Agency Plan with unlimited email addresses is available by contacting Mailshake's sales team.

Feature Comparison

Apollo's database is built into every paid plan, meaning teams can prospect and engage from the same workspace without purchasing a separate data subscription. Mailshake's Data Finder provides contact discovery, but deeper enrichment workflows across CRM records and external systems require additional configuration.

For teams where data freshness and enrichment automation are critical, Apollo's built-in approach reduces the number of tools needed in the stack.

PIPELINE VISIBILITY

Turn Funnel Chaos Into Forecast Confidence

Pipeline forecasting a guessing game? Apollo surfaces quality leads that actually convert, giving your team real pipeline — not wishful thinking. Nearly 5M users stopped guessing and started closing.

Start Free with Apollo →

Pricing Comparison

Apollo's full pricing tiers, all at annual billing rates, are available at apollo.io/pricing:

• Free: $0, 900 credits/year, 2 sequences, basic filters
• Basic: $49/user/month, 30,000 credits/year, unlimited sequences, CRM integrations, 6 intent topics
• Professional: $79/user/month, 48,000 credits/year, US dialer, 5 mailboxes, automated workflows, AI Research Agent
• Organization: $119/user/month (min. 3 users), 72,000 credits/year, international dialer, 15 mailboxes, SSO, advanced security

Mailshake's plans, from mailshake.com/pricing, are priced per account (not per seat) on an annual basis:

• Starter: $25/month billed yearly ($29/month billed monthly), 1 email address, 1,500 sends/month, 50 Data Finder credits
• Email Outreach: $45/month billed yearly ($49/month billed monthly), 2 email addresses, unlimited sends, 50 Data Finder credits, CRM integrations
• Sales Engagement: $85/month billed yearly ($99/month billed monthly), 10 email addresses, 2,500 Data Finder credits, power dialer, unlimited North American calling minutes
• Agency Plan: Contact Mailshake's sales team for pricing, unlimited email addresses, all Sales Engagement features

Mailshake also offers add-ons: Data Finder at $17/month billed yearly ($19/month billed monthly) and Ready to Use Mailboxes at $11/month billed yearly ($12/month billed monthly). Apollo's model bundles data credits into each plan tier, with additional credits available as needed.

Both platforms use a credit-based model for data access.

At face value, Mailshake's entry-level plans have a lower monthly cost. However, teams requiring prospecting data on top of Mailshake's base plans would need to factor in Data Finder add-on costs, while Apollo's data access is included in each plan's credit allocation.

How Apollo Differs from Mailshake

The most significant functional difference is the depth of the prospecting layer. Apollo's sales intelligence database is built into the platform, so teams can identify prospects, verify contact data, score leads by intent signals, and launch sequences without leaving a single workspace.

Mailshake's Data Finder provides contact discovery, but it operates more as a supplementary feature than as a full prospecting infrastructure.

Apollo's dialer capabilities extend beyond a basic power dialer. The Parallel Dialer dials multiple numbers simultaneously and connects reps only when someone picks up, reducing idle time.

AI-generated call scripts are tailored to each prospect's context, and call outcomes are auto-logged with AI summaries pushed directly to connected CRMs. Mailshake's power dialer on the Sales Engagement plan covers North American calling with unlimited minutes, but does not include parallel dialing or AI-generated call summaries.

On the AI front, Apollo's capabilities go well beyond email writing. The AI Research Agent gathers prospect context and surfaces it pre-call or pre-sequence, and AI-powered sentiment analysis helps teams prioritize follow-ups based on reply signals. Teams using Apollo have reported measurable improvements in meeting booking rates through AI-assisted workflows. As Collin Stewart, CEO at Predictable Revenue, noted:

"We're getting higher reply rates, open rates are doubled, meetings are up, speed to book is cut in half...it's the platform for people who want to do more."

According to Ramp's Sales Data Providers category data as of July 2026, Apollo is the fastest-growing vendor in the Sales Data Providers category, averaging +0.75 percentage points per month in adoption, and holds a 22% competitor switch rate, more than double ZoomInfo's 10%, reflecting active movement toward Apollo from teams previously using other vendors in the category.

For teams building more advanced GTM infrastructure, Apollo's API, CLI, and MCP integrations allow GTM Engineers and AI Builders to incorporate Apollo's data into custom workflows, AI agents, and headless pipelines. Mailshake does not offer equivalent developer tooling at this layer.

Frequently Asked Questions

Is Apollo better than Mailshake for outbound sales?

It depends on your workflow. Apollo provides an integrated experience from contact discovery through sequencing, dialing, and analytics in one platform, making it well-suited for teams that want to manage the full outbound motion without separate data tools.

Mailshake is designed for teams focused specifically on email and multi-channel sequence execution, particularly those who already have a contact list and want to move quickly into outreach.

Does Apollo have a free plan?

Yes. Apollo's free tier is available at no cost and includes credits for data access, basic sequences, and core prospecting filters.

Mailshake does not list a free tier on its pricing page. See the pricing section above for full details on both platforms.

Can Apollo replace Mailshake?

For most outbound teams, yes. Apollo includes multi-channel sequencing, email warmup through integrations, a built-in dialer, and AI-assisted email personalization, covering the core use cases Mailshake addresses. Teams that consolidate onto Apollo also gain access to the prospecting database, enrichment workflows, and analytics covered earlier in this article. Collin Stewart at Predictable Revenue noted that Apollo consolidated the complexity of three tools into one for their team.

Who is Apollo designed for?

Apollo serves B2B GTM teams, GTM Engineers, and AI Builders building headless GTM workflows with the Apollo API, CLI, and MCP, alongside Sales Professionals, SDRs/BDRs, AEs, RevOps, Marketing, and Revenue Leaders. It is used by nearly 5M users across 600K+ companies, from startups to teams within Fortune 500 organizations.

How does Mailshake's Data Finder compare to Apollo's database?

Mailshake's Data Finder provides B2B contact discovery with credits included on each plan tier and available as a standalone add-on. Apollo's database, as detailed in the feature comparison above, covers 240M+ people with 98% email accuracy and is built directly into every paid plan, with enrichment workflows extending to CRM records, CSV files, and external systems via API.

Conclusion

Apollo and Mailshake both serve outbound sales teams, but they operate at different levels of the GTM stack. Mailshake offers a focused, accessible tool for email sequencing and multi-channel outreach with a clear per-account pricing model.

Apollo goes further by combining a deep sales intelligence database, multi-channel engagement, AI-powered workflows, and analytics into one connected platform.

For teams that want to consolidate prospecting, sequencing, dialing, and data enrichment without stitching together separate tools, Apollo delivers a more complete solution. Try Apollo free today and see how it compares against your current stack.

ROI AND BUDGET JUSTIFICATION

Prove Pipeline ROI With Apollo

ROI pressure killing tool adoption before your team even ramps? Apollo delivers measurable pipeline impact from day one — 600K+ companies rely on it. Start your free trial and show the numbers that matter.

Start Free with Apollo →