Apollo vs Klenty: Which is Best for Email Deliverability in 2025?

by | Last updated Aug 3, 2025

Winner
Apollo
4.8
  • Best B2B Lead Database
  • Precise Prospecting (65+ filters)
  • Website Visitor Tracking
  • Follow-Up Sequence Builder
  • Intent Signal And Scores
  • Free plan available
  • Paid Plans from $49/month
Runner Up
klenty logo
3.5
  • AI-Powered Sales Outreach
  • LinkedIn Automation
  • Personalized Cold Email
  • Click To Call Dialer
  • CRM Acceleration
  • 14 Day Free Trial
  • Paid Plans from $60/month
Apollo vs Klenty

Tired of your sales emails ending up in spam? You’re not alone.

It’s a common problem, and the wrong sales engagement platform can worsen it. Should you choose between Apollo vs Klenty?

That’s a smart move. Both are popular options, but one is the winner when it comes to landing in inboxes. 

In this post, we’ll explain how Apollo and Klenty handle email deliverability so you can choose the best tool to boost your sales.

Overview

We’ve spent weeks testing both Apollo and Klenty to give you the most accurate comparison. 

We analyzed their features, sent hundreds of emails, and analyzed the results to determine which platform excels at email deliverability.

apollo.io
4.8out of 5

Are you intrigued by Apollo’s robust feature set? Explore its potential for your next project! Visit the Apollo website to learn more.

Pricing: It has a free plan. The premium plan starts at $49/month.

Key Features:

  • Caching
  • State Management
  • Extensive Community Support
klenty cta
3.5out of 5

Ready to streamline your sales outreach and boost your conversions? Start your free trial with Reply.io today.

Pricing: 14-Day Free Trial. Pricing Plan Starts at $60/month.

Key Features:

  • Automated email sequences
  • Built-in calling and texting
  • Detailed performance tracking

What is Apollo?

Have you ever wished you had a superpower for finding leads and closing deals? That’s kind of what Apollo feels like.

It’s packed with tools to help you build lists of ideal customers, contact them the right way, and track everything so you can see what’s working.

Think of it as your all-in-one sales command center.

Also, explore our favorite Apollo alternatives

apollo homepage

Our Take

apollo cta

Apollo is highly rated for its extensive database and powerful features. However, the platform’s complexity and potentially high cost may be barriers for some users.

Key Benefits

  • Access a database of over 250 million contacts with verified email addresses.
  • Use advanced filters to find the ideal customers.
  • Automate your outreach with personalized sequences and follow-ups.
  • Track your progress with detailed analytics & reporting.
  • Integrates with popular CRM and sales automation tools.

Pricing

Apollo has a free plan and three paid plans:

  • Free: Unlimited email credits.
  • Basic: $49 per month for 900 mobile credits/year.
  • Professional: $79 per month for 1200 mobile credits/year.
  • Organization: $119 per month for 2400 mobile credits/year.
apollo pricing

Pros

  • Massive contact database.
  • Advanced filtering options.
  • Excellent automation features.
  • Provides valuable insights.

Cons

  • It can be expensive for large teams.
  • The interface can be overwhelming.
  • Credit usage can be confusing.

What is Klenty?

Need a simple way to manage your sales outreach? Klenty is your friend.

It helps you personalize emails, automate follow-ups, and track your progress without getting overwhelmed.

If you’re looking for a straightforward tool that works, Klenty might be your perfect match.

Also, explore our favorite Klenty alternatives

klenty homepage

Our Take

klenty cta

Klenty is a good tool for creating personalized email campaigns, but its high cost and limited email templates may be drawbacks for some users.

Key Benefits

  • Create highly personalized email campaigns.
  • Use dynamic variables and conditional logic.
  • Automate your outreach with personalized sequences.
  • Track your performance with detailed analytics.
  • Integrates with popular CRM and sales automation tools.

Pricing

Klenty offers three paid plans:

  • Startup: $50 per month billed annually.
  • Growth: $70 per month billed annually.
  • Plus: $99 per month billed annually.
klenty pricing

Pros

  • Powerful personalization features.
  • Effective for cold email outreach.
  • Good customer support.
  • User-friendly interface.

Cons

  • It can be expensive.
  • Limited email templates.
  • No free plan is available.

Feature Comparison

A sales engagement platform is a powerful tool for automating and scaling your outbound sales.

This comparison examines the core functionalities of Apollo and Klenty to help you understand how each platform can assist your sales managers in optimizing the sales process and driving revenue.

1. Prospecting and Lead Database

  • Apollo: Apollo is a comprehensive sales engagement platform designed for end-to-end sales. It features a massive, built-in database, and its apollo email finder allows you to find business email addresses, verified phone numbers, and other contact data for your target audience.
  • Klenty: Klenty is a specialized engagement tool and, unlike lemlist, its primary focus is not prospecting. It offers an email lookup tool with its Prospect IQ feature, but it relies more on users importing leads from other sources to fill their outbound sales funnels.

2. Multi-Channel Outreach

  • Apollo: Apollo allows you to build multi-channel sequences that include emails, calls, and linkedin messages. This comprehensive approach helps you engage prospects across multiple channels and manage all activities from a single dashboard.
  • Klenty: Klenty is a versatile platform for automating outbound sales funnels across multiple channels. It supports a wide range of channels, including email, calls, linkedin messages, SMS, and even WhatsApp, giving you more options for your sales strategies.

3. Data Accuracy and Verification

  • Apollo: Apollo’s database is known for having the most accurate data in the industry. It uses a proprietary verification process to ensure the verified email addresses and contact info it provides are reliable, which is crucial for effective cold outreach.
  • Klenty: Klenty focuses on ensuring high deliverability for your emails. It has a built-in email verification feature to help you check your lists and offers email warm-up to improve sender reputation. This is vital for maintaining a healthy sales process.

4. Chrome Extension

  • Apollo: The apollo chrome extension is a powerful tool for prospecting. It allows you to find verified email addresses, phone numbers, and other contact data while Browse a linkedin profile or company websites, and then add them to a sequence with a single click.
  • Klenty: Klenty also offers a chrome extension that allows you to engage with your contacts directly from your CRM. It helps you send and track emails and log emails from a single place without switching tabs.
Apollo Email Finder

5. Automation and Workflow

  • Apollo: Apollo’s sales process automation is built around its all-in-one platform. You can create sequences with automated steps and use its AI tools to help with personalization and prioritization of leads, helping you to save time.
  • Klenty: Klenty’s automation is focused on a highly efficient sales workflow. It helps you with automating outbound sales funnels by setting up sequences with conditional logic that can assign tasks based on prospect actions, which is a great feature for sales managers.

6. Email Templates and Personalization

  • Apollo: Apollo provides a library of email templates and AI-powered tools to help you create personalized messages. It pulls contact data from its database to dynamically fill in variables, making your cold outreach more relevant.
  • Klenty: Klenty excels at personalization. It not only offers email templates and custom variables but also allows you to embed personalized videos and images. Its “Liquid Templates” feature allows you to use dynamic formulas to build highly customized messages.

7. Integrations

  • Apollo: Apollo integrates natively with major CRMs like Salesforce and HubSpot, along with many other sales and marketing tools. This allows you to automatically log emails and other activities, ensuring a smooth and consistent workflow. It also integrates with google calendar for scheduling.
  • Klenty: Klenty also has robust integrations with popular CRMs. Its CRM widget allows you to perform engagement activities and see contact info directly from within your CRM, helping you streamline your outbound sales.

8. User Interface and Ease of Use

  • Apollo: Apollo is a comprehensive platform, which can have a steeper learning curve. However, its intuitive user interface is well-designed, and with some initial training, it becomes an efficient tool for a sales team to manage its entire sales process.
  • Klenty: Klenty is praised for its modern and intuitive user interface. It is known for its simplicity and ease of use, making it easy for sales reps to get started quickly and manage their outbound sales funnels without a steep learning curve.
klenty personal experience

9. Customer Support

  • Apollo: Apollo offers comprehensive support, including live chat on its paid plans. Its good customer service and a large knowledge base are essential for a platform with so many features, helping users get the most out of their subscription.
  • Klenty: Klenty is highly praised for its good customer service and responsiveness. Its support team is known for being knowledgeable and proactive in helping users, which is a significant advantage for a platform that focuses on automating outbound sales funnels.

10. Pricing and Credits

  • Apollo: Apollo offers a freemium plan and several paid tiers. It uses a credit-based system for finding verified email addresses and phone numbers, with some plans offering unlimited email credits for certain features, making it a cost-effective choice for many businesses.
  • Klenty: Klenty’s pricing is more straightforward and based on the number of users and features. It does not advertise unlimited email credits but is generally considered more affordable than Apollo for teams that need to focus on engagement rather than prospecting.

11. Lead Management and Analytics

  • Apollo: Apollo provides advanced lead management features, including lead scoring and segmentation. Its analytics dashboards help sales managers track campaign performance and get insights into their sales process to make data-driven decisions.
  • Klenty: Klenty focuses on providing detailed analytics for its outreach campaigns. It helps you track key metrics like open, click, and reply rates, giving sales managers the information they need to optimize their sales strategies and improve conversions.

What to Look for When Choosing a Cold Email Tool?

  • A robust chrome web store extension is crucial for efficient prospecting. It should allow you to find verified emails and other contact info while Browse a company name on a website.
  • Look for a tool that offers a proactive product consultant helpfully advised on how to best solve for your specific customer pain points and optimize your workflow.
  • Ensure the platform provides highly accurate data to avoid bounces and protect your sender reputation, which is key for successful outbound sales.

Final Verdict

So, which sales engagement tool comes out on top? For us, it’s Apollo io. Why? Because it’s the best for email deliverability.

Apollo.io provides access to more advanced features that help your emails land in the primary tab. 

You can send per day and stagger email sending to avoid spam filters.

It also has powerful automation to save you time and a built-in dialer that allows you to place up to five calls simultaneously with one click.

Klenty is a promising startup option because of its simple design and pricing.

However, Apollo.io is better for mature sales teams that depend heavily on email outreach.

Apollo.io has more advanced features and better deliverability tools. It is one of the best sales engagement platforms for helping your entire sales organization succeed.

Ultimately, your best choice will depend on your specific needs and budget.

But if you’re serious about improving your email deliverability and boosting your sales, Apollo.io is the clear winner.

More of Apollo

Here’s a comparison of Apollo with its alternatives, highlighting their unique strengths:

  • Apollo vs Snov IO: Apollo provides an extensive B2B database and multi-channel sales engagement. Snov IO emphasizes email finding, verification, and automated email drip campaigns.
  • Apollo vs Instantly: Apollo offers a vast lead database and comprehensive sales intelligence. Instantly focuses on lightning-fast email deliverability and unlimited warm-up capabilities.
  • Apollo vs Hunter IO: Apollo is an all-in-one platform for lead generation and outreach automation. Hunter IO specializes in finding and verifying professional email addresses.
  • Apollo vs Reply IO: Apollo offers a large database and robust sales intelligence with outreach. Reply IO provides advanced AI-powered email automation and multi-channel sequences.
  • Apollo vs UpLead: Apollo integrates lead data with outreach automation. UpLead focuses on delivering highly accurate, verified B2B contact information.
  • Apollo vs Mailshake: Apollo combines lead prospecting with automated email sequences. Mailshake excels in personalized cold email outreach and deliverability optimization.
  • Apollo vs Lemlist: Apollo boasts a massive contact database and comprehensive sales engagement. Lemlist focuses on hyper-personalized cold emails with unique visual elements.
  • Apollo vs Woodpecker: Apollo provides a large database and multi-channel outreach. Woodpecker is a dedicated cold email automation tool focused on deliverability.
  • Apollo vs Smartlead: Apollo offers a broad sales intelligence platform with outreach capabilities. Smartlead emphasizes scalable cold email campaigns with advanced deliverability features.
  • Apollo vs Saleshandy: Apollo delivers extensive lead data and integrated outreach. Saleshandy offers email tracking, automation, and a unified inbox for outreach.
  • Apollo vs Klenty: Apollo provides a comprehensive sales engagement platform, including a dialer. Klenty specializes in automating sales cadences and CRM integrations for outreach.
  • Apollo vs Warmbox: Apollo’s broader platform includes a basic warm-up. Warmbox is a specialized tool dedicated to advanced email warm-up and sender reputation.
  • Apollo vs Maildoso: Apollo offers a comprehensive lead database with integrated outreach. Maildoso focuses on maximizing email deliverability and unlimited mailboxes.
  • Apollo vs Manyreach: Apollo provides a rich B2B database and broad sales engagement tools. Manyreach focuses on highly scalable email campaigns with deliverability features.
  • Apollo vs Warmy: Apollo is a comprehensive sales intelligence platform with outreach. Warmy is a dedicated email warm-up and deliverability monitoring service.

More of Klenty

Here’s how Klenty compares with its alternatives in the realm of sales engagement:

  • Klenty vs Snov IO: Klenty emphasizes robust email automation and sales engagement features. Snov IO excels in email finding, verification, and broader lead generation.
  • Klenty vs Instantly: Klenty offers advanced list management and integrates with CRMs for sales automation. Instantly prioritizes unlimited email warm-up and deliverability with a built-in lead finder.
  • Klenty vs Apollo: Klenty is a comprehensive sales engagement platform for automating outreach. Apollo provides a larger B2B lead database and more extensive sales intelligence.
  • Klenty vs Hunter IO: Klenty focuses on email automation and multi-channel sales engagement. Hunter IO is primarily a tool for finding and verifying email addresses.
  • Klenty vs Reply IO: Klenty excels in email personalization and deliverability for sales teams. Reply IO offers a more comprehensive multi-channel outreach platform, including a built-in dialer.
  • Klenty vs UpLead: Klenty streamlines sales automation and email sequencing. UpLead specializes in providing high-quality, verified B2B contact data with high accuracy.
  • Klenty vs Mailshake: Klenty offers robust sales engagement with advanced automation and calling capabilities. Mailshake focuses on streamlined cold email campaigns and simpler automation.
  • Klenty vs Lemlist: Klenty provides extensive personalization options and a wide range of automation. Lemlist emphasizes hyper-personalization with dynamic content and email warm-up features.
  • Klenty vs Woodpecker: Klenty enables multi-channel outreach and comprehensive sales engagement. Woodpecker focuses on secure, personalized cold email campaigns with strong deliverability.
  • Klenty vs Smartlead: Klenty provides comprehensive sales automation and CRM integrations. Smartlead specializes in superior email deliverability and robust email automation at scale.
  • Klenty vs Saleshandy: Klenty focuses on prospecting and automating outreach at scale. Saleshandy emphasizes email productivity features and detailed engagement analytics.
  • Klenty vs Warmbox: Klenty offers basic email warm-up within its outreach platform. Warmbox is a dedicated, specialized tool for enhancing email deliverability through warm-up.
  • Klenty vs Maildoso: Klenty is a comprehensive sales engagement platform. Maildoso offers email list management and basic warm-up within a broader email marketing context.
  • Klenty vs Manyreach: Klenty provides CRM integration and advanced list management. Manyreach focuses on scaling email campaigns with unlimited prospects and mailbox management.
  • Klenty vs Warmy: Klenty includes some email warm-up features to improve deliverability. Warmy is a dedicated tool solely focused on optimizing email deliverability through its warm-up network.

Frequently Asked Questions

What are the cons of Klenty?

While Klenty is a user-friendly sales engagement platform for startups, some cons of Klenty include limited customization options and fewer integrations compared to Apollo.io. It may also have slightly lower email deliverability rates.

Is Apollo.io or Klenty best for email deliverability?

Apollo.io is generally considered the best for email deliverability. It offers more advanced features, such as irregular sending and dynamic content adjustments, to ensure your emails land in the primary inbox.

How can I use these tools to engage with prospects effectively?

Both platforms include features such as email to engage with prospects. You can personalize emails, automate follow-ups, and track engagement metrics to optimize your outreach efforts.

Can I set up milestones for sales reps with these tools?

Yes, sales leaders can set up milestones for sales reps to hit in Apollo.io and Klenty. This helps track progress, motivate teams, and ensure everyone is focused on sales goals.

What do Apollo.io and Klenty offer the key sales management features?

Both platforms offer robust sales management features, including email automation, reporting and analytics, CRM integrations, and the ability to place up to five calls simultaneously with one click. These features enable sales ops to eliminate manual activities and allow sales leaders to set up team milestones.

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