Smartlead Vs. Overloop Vs. Autoklose: Which is Best for Your Business?

Are you looking for an email outreach tool? 

If that’s the case, you've come to the right place! In this comparison article, we'll be taking a closer look at three popular players in the game: Overloop, Autoklose, and Smartlead. 

These tools are designed to boost your email campaign performance and help you reach your audience with precision and finesse. 

Whether you're a sales professional, a marketer, or just someone looking to boost their email game, we'll break down the key features and benefits of each tool to help you make an informed decision. 

So, let's get started and find out which one suits your needs best!


  • Overloop is a sales automation platform with a 4.3/5 rating. It aims to automate cold emailing and LinkedIn outreach messages. It helps you build and manage contact lists. Using this tool, you can create omnichannel campaigns, track email performance, and maintain contextual conversations. Overloop also offers sales engagement features. It integrates seamlessly with popular tools like Google, Outlook, Salesforce, and Slack.
  • Autoklose is a sales automation platform designed to streamline outreach efforts and close deals more efficiently. With Autoklose, you can automate email campaigns, track engagement, schedule follow-ups, and personalize communication at scale. You can access a library of email templates to save time and increase effectiveness. Autoklose seamlessly integrates with popular CRM tools.
  • Smartlead is a powerful tool known for email deliverability and lead generation with a 4.9/5 rating on Using natural AI conversations, Smartlead builds a strong sender reputation and safeguards emails from spam folders with unlimited warm-ups. It offers Smart-Adjust to defend live campaigns against low reply rates. With its cold emailing API infrastructure, you can automate lead generation. Overall, it's a comprehensive solution to boost your outreach and drive results.


Overloop is a sales automation platform that offers cold email and LinkedIn automation. The Overloop Inbox manages all the outreach conversations in one place. It offers ‘dynamic smart segments’ to organize email list contacts. 

Besides sending personalized cold emails at scale, Overloop works with LinkedIn Sales Navigator to create contacts. In addition, you can generate and nurture leads and find the right audience for your business, all in one platform. 

What’s Overloop Best for? 

Overloop for List Building and Contact Management

  • Overloop comes with an email finder that finds the missing email addresses of your contacts. Moreover, it offers a Chrome extension so you can extract contacts from anywhere. 
  • You can directly import contacts from LinkedIn; Overloop works with both LinkedIn Basic and LinkedIn Sales navigator. Besides, you can import contacts from spreadsheets/CSV from CRMs like HubSpot, Salseforce, Pipedrive, etc. 
  • Using the dynamic smart segment, you can organize and manage your contact lists. Overloop lets you personalize your contact lists with custom fields.

Overloop for Outbound 

  • With Overloop, you can create omnichannel outreach mixing follow-up emails, LinkedIn actions, and manual actions (calling, etc.). 
  • The LinkedIn automation feature lets you visit profiles, send connection requests and direct messages at scale. Plus, you can connect your email address and send cold emails with {{variables}} to personalize your outreach. 
  • Overloop offers comprehensive tracking of your emails – email open rates, visits, reply rates, bounces, etc. You can even track automatic replies or out-of-office replies. In addition, Overloop lets you send your emails as replies to previous emails (same thread), so you can always maintain context. 

Overloop for Sales Engagement

  • You can automate daunting manual tasks with Overloop to speed up the sales process. It offers a fully customizable sales pipeline to track your deals. 
  • Overloop offers a Conversation Inbox to manage all your outbound conversations with prospects and leads in one dashboard. Plus, you can assign conversations among your team members, which helps in easy collaboration. 
  • Overloop offers native integrations, including Google (Gmail and Google Workspace), Outlook, Salesforce, hubSpot, Calendly, Slack, etc.


Autoklose is the first email outreach software with an already integrated B2B database. It comes with already 8 billion verified B2B leads. It reduces the onboarding time saving 3 hours per day per sales rep. It uses real-time reporting and analytics and syncs seamlessly within the existing sales stacks. It is a very handy tool with an easy-to-use interface.

What's Autoklose Best for? 

Targeting Right Prospects

It helps target the right prospects by utilizing the huge database packed with clean, verified B2B leads from different industries and applying several powerful filters.


It increases engagement by email automation follow-ups and converts the prospects into loyal customers by sending out sequences of highly tailored emails at scale. It also helps in managing marketing campaigns and automating the sales process. 

Growth of Business

Helps in the growth of the business by monitoring the performance of the campaigns and individual team members, and analyzing reports directly from the dashboard. 

Overloop Vs. Autoklose Vs. Smartlead – Is Smartlead the Best Choice?

Smartlead is an all-in-one cold emailing tool for multi-channel outreach. It comes with features such as unlimited mailboxes, warmups, and automated follow-ups that make cold emailing easier than ever. 

This tool also offers really powerful APIs and webhooks that make it super convenient to connect Smartlead with CRMs and other softwares.  

Overall, Smartlead is the best for streamlining your outbound efforts and increasing ROI within a couple of months. 

What is Smartlead Best for? 

Smartlead for Deliverability and Lead Gen Process

  • Smartlead offers unique IP servers for every campaign it sends out. 
  • This outreach tool offers unlimited warmups so your deliverability is optimum. 
  • Smartlead improves a high sender reputation with natural (human-like) AI conversations. It also protects your reputation by auto-moving emails from spam folders to the primary inbox. This tool uses unique identifiers to cloak all warmup emails from being recognized by automation parsers. 
  • Moreover, it offers Smart-Adjust, which defends your live campaigns against low reply rates. 
  • You can automate your lead generation process with Smartlead’s powerful cold emailing API infrastructure, which allows you to auto-create and manage campaigns. 

Smartlead for Cold Email Automation

  • Smartlead offers unlimited sender accounts for its users. You can create campaigns and auto-rotate mailboxes in one click. 
  • It lets you create omnichannel outreach comprising cold emails, follow-up emails, and LinkedIn interactions. Also, you can scale your outreach across WhatsApp, Twitter, etc. 
  • You can set up custom-conditional email sending triggers and create sub sequences based on lead behavior. 

Smartlead for LinkedIn Outreach 

  • Just like Smartlead’s cold emailing feature, you can send unlimited Connection Requests on LinkedIn by auto-rotating multiple LinkedIn profiles.
  • You can perform other activities such as visit profiles, send messages, and like recent posts. Besides, you can also reply to all your connections from the master inbox.

Smartlead for Sales Engagement Automation

  • Smartlead presents a master inbox to maintain and reply to all conversations from one dashboard. 
  • You can track email open rates, click-throughs, and reply rates so you can measure what works and implement necessary changes. 
  • SDRs can save hundreds of hours with Smartlead’s auto mailbox rotation. This tool also offers a full whitelabel experience.

So Which Tool Should You Choose –Overloop, Autoklose, or Smartlead? 

Overloop, Autoklose, and Smartlead—all the three platforms are popular SaaS tools in the industry. These are known for their excellent lead generation abilities, which is what marketing agencies and sales leaders look for. 

However, there are some striking differences on features, customer service, and pricing. 

So if you are still reluctant to pick the right tool for your business, let’s have a quick look at two major deciding factors – pricing and the customer reviews. 

Overloop Pricing

Overloop offers a 14-day free trial or a demo call to help customers choose the right plan for them. They provide two plans:

  • $99/user/month
  • Custom Pricing

Autoklose Pricing

Auto Kloser 

  • $59.99 per user per month
  • $49.99 per user per month (annually billed) 

Advanced Kloser 

  • $69.99 per user per month
  • $59.99 per user per month (annually billed) 

Accelerated Kloser 

  • $99.99 per user per month
  • $89.99 per user per month (annually billed)

Smartlead Pricing

Smartlead offers four pricing plans for marketing agencies, sales teams, and lead generation agencies. You can start for free with its 14-day free trial (no credit card required and email warm ups included) and choose the right plan based on your needs. 

  • Basic Plan: $39/month 
  • Popular Plan: $79/month
  • Pro Plan: $94/month 
  • Custom Plan: Fully customizable pricing

Additionally, as add-ons, you can avail 1 client at $29/month and 1 LinkedIn at $59/month. 

Smartlead offers a great money-traction for all kinds of businesses among all its competitors. And the pricing differentiation happens mostly on service level (e.g., custom CRM, webhooks, API access and integrations, active support, unlimited seats, etc.). 

What do Users Say About Overloop Vs. Autoklose Vs. Smartlead? 

Overloop Reviews

Autoklose Reviews

Smartlead Reviews

The Final Analysis: Pros & Cons of Overloop, Autoklose, and Smartlead



  • User friendly interface 
  • Good customer service
  • Great CRM
  • Seamless integration 


  • Doesn’t have phone outreach
  • Can’t export metrics
  • Pricey



  • Lead & prospect management and accurate reporting
  • Templates are easy to customize 
  • Easy to use user interface


  • No LinkedIn integration 
  • Lacks features compared to its competitors
  • Saving a template for future campaign could be easier



  • Offers unlimited sender account and unlimited warmups
  • Unique IP servers for campaigns
  • Custom CRM, webhooks & integrations, and API access
  • Omnichannel outreach across email and LinkedIn
  • End-to-end whitelabel experience – you can have the app under your domain
  • Auto-rotating email accounts to maximum email outreach 
  • Auto-categorization of lead intent and subsequences
  • You can track your campaigns’ performance – open rates, clicks, and reply rates 
  • Master inbox for managing all conversations in one place
  • Responsive support team and smooth onboarding


  • Smartlead won’t run on mobile devices/applications
  • There are webhooks and API access, but not any native integrations (HubSpot integration is coming soon) .


I have dissected Overloop, Autoklose, and Smartlead, and hopefully, you now have a clearer picture of what each tool brings to the table. 

Overloop impresses with its high response rates and visually appealing email capabilities, while Autoklose shines with versatile features. 

On the other hand, Smartlead stands out for its lead generation prowess and high deliverability rate. Ultimately, the best choice for you depends on your specific needs and preferences. 

So take a moment to weigh the pros and cons, consider your goals, and make an informed decision. 

Happy emailing!

Frequently asked questions

General Questions

What are active leads?

Active leads are the contacts you upload in Smartlead, similar to contacts in HubSpot; if you upload 1000 leads to a campaign, they are considered 1000 active leads. If you upload similar leads to a new campaign, they are not considered a “new active lead” as they already exist in our system.

Do you provide mailboxes, or do I need to connect my own?

We don’t offer mailboxes yet. You need to get your own dedicated list of mailboxes using popular providers like Gmail, Outlook, Zoho, and others that exist in the market. Once you get them, follow our detailed guides to connect them quickly.

Do you offer guides and articles on succeeding with cold emails?

Absolutely, one of our most popular guides can be found right here. It's been used by a large percentage of users to go from zero to cold emailing experts. Covering all topics from email infrastructure to copywriting and lead sourcing.

Is another tool needed for warmups?

No, Smartlead has over 200,000 highly reputed mailboxes connected. The advantage you get along with naturalized AI conversations is access to aged domains you will never find in any warmup tool.

What is the API commonly used for?

It is used popularly by agencies to automate their entire lead generation process as well as to connect Smartlead to external tools to push and pull data from. You can also connect to 1000s of apps using Zapier.

What type of businesses sees the most success with Smartlead?

Anyone that can close deals from demos will succeed with Smartlead. It works for Sales companies, Marketing agencies, SaaS businesses, Recruitment, and offline companies (like construction).

Do you provide me with lead sources?

We do not provide you with leads. You will need to use other data providers. These leads can be automatically added to Smartlead using our API or bulk uploaded via our CSV upload system.

Do you integrate with any CRMs?

We're building native integrations with Hubspot, Salesforce, Close, Pipedrive, and many more. The best part, due to our open API and Webhook infrastructure, you can connect to any CRM in the world without an issue.

How many team members can I add?

You can add an unlimited number of team members, as well as assign them roles and authority access.

Do you have custom plans beyond the Pro plan?

Yes, it's common for many people to move to Custom plans after a few weeks. You can view all the options for up to 10M leads on the subscription page once you sign up for free.

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