Cracking the Cold Email Code: Smartlead vs Mailshake vs Autoklose

Created On:
March 4, 2024
Updated On:
June 7, 2024
Smartlead vs Mailshake vs Autoklose

Enhancing ROI or affecting engagement, a cold email tool can impact your campaign's performance either way. Despite Smartlead, Mailshake, and Autoklose leading the cold emailing tool market, studying each tool is important before buying one. 

This article consists of a detailed study of each of these tools—notable features and pricing included. You will also find a section on what features to look for before buying cold outreach software. 

Let’s dive in. 

What Should You Look for in a Cold Email Tool?

If you’re on this page, it means you’re looking for a cold email software. Instead of telling you which one to pick, let me help you with a list of must-have features that you will need to achieve success through cold emails.

Master Inbox 

A master inbox allows users to manage incoming replies in real-time efficiently, enabling prompt follow-ups and better engagement with prospects. It streamlines communication and ensures that no potential leads are overlooked, enhancing the effectiveness of cold email campaigns.

Unlimited Warm-Ups

Unlimited warm-ups ensure consistent inbox delivery by gradually building the sender reputation and reducing the risk of emails being marked as spam. This feature is crucial for maintaining high deliverability rates and maximizing the success of cold email campaigns.

Unlimited Email Accounts

Having unlimited email accounts allows users to segment their outreach efforts effectively and avoid the risk of hitting sending limits. It provides flexibility and scalability, enabling users to manage multiple campaigns simultaneously and reach a larger audience without constraints.

Powerful API for Automation

A robust API that can automate various aspects of cold email campaigns streamlines workflows and saves time for users. It enables automation of tasks such as list management, email sending, follow-ups, and tracking, improving efficiency and allowing users to focus on strategy and relationship-building.

Whitelabel Feature 

The whitelabel feature allows users, particularly agencies, to customize the platform with their branding. This helps maintain a professional image and instill trust with clients or prospects. It enhances brand consistency and credibility, which are essential for agencies looking to establish their reputation in the market.

ESP Matching Feature

ESP matching is a feature that aligns your email-sending pattern with leads' Email Service Providers (ESPs), increasing open rates by 30%. The automated ESP matching adjusts sending allocations to match recipients' ESPs, boosting email deliverability without additional effort.

Now that you know what features to look for, let’s get into the details of Smartlead vs Mailshake vs Autoklose. 


Smartlead is a highly rated cold emailing tool with a 4.9 rating. It enables users to send mass emails to potential customers, driving revenue growth quickly. Offering features like unlimited email accounts, A/B testing, and native integrations with platforms like HubSpot, Clay, and ListKit, it streamlines outreach efforts. Smartlead's unified master inbox gathers real-time replies, facilitating efficient follow-ups for enhanced productivity.

What’s Smartlead Best For? 

  • Unified Master Inbox: Smartlead's master inbox facilitates streamlined campaign management by providing real-time monitoring, quick follow-up actions, lead assignment capabilities, and efficient responses akin to a miniature CRM system.
  • Whitelabel: White-labeling involves customizing the platform with your branding, ensuring users project a consistent and professional image to clients or prospects.
  • Unlimited Email Warm-up: With Smartlead's AI-driven unlimited email warm-up feature, you can warm up as many email accounts as you want.
  • Email Validation: Smartlead's email validation feature automatically identifies and filters out invalid email addresses and unreliable domains, ensuring reliable communication channels and optimizing operational efficiency.
  • Spintax Integration: By integrating Spintax functionality, Smartlead allows you to dynamically customize email content for each prospect, enhancing engagement levels and significantly reducing spam rates.
  • Dynamic IP Addresses: Smartlead assigns unique IP addresses for each campaign, enhancing security, accessibility, and deliverability. 
  • Unlimited Email Accounts: With Smartlead, you can add as many mailboxes as you want, enabling seamless integration and management of multiple email accounts within the platform.

Pricing Plan

  • Basic Plan: $39 per month
  • Pro Plan: $94 per month
  • Custom Plan (formerly Expert Plan): Starting at $174 per month


Mailshake is a comprehensive outreach tool that combines cold emails, LinkedIn messaging, and cold calling. It offers automation, customizable templates, and analytics to enhance deliverability and optimize engagement. Integrating with CRM systems, it provides real-time metrics and prospecting tools for effective communication strategies.

What’s Mailshake Best For?

  • Integrations: Mailshake helps you to seamlessly integrate with your email provider and CRM for efficient lead management and communication.
  • Data Finder: Mailshake helps you to easily find prospect emails, expanding your contact database and enhancing targeted outreach efforts.
  • AI Email Writer: Mailshake helps you to quickly generate personalized email content using AI, saving time and improving message relevance.
  • Email Deliverability: Mailshake helps you to maximize email deliverability, ensuring your messages land in recipients' inboxes and avoid being marked as spam.
  • Chrome Extension: Mailshake helps you to access its features directly from your browser with the Chrome Extension, facilitating convenient prospecting and outreach.

Pricing Plan

  • Starter: $25 per user/month (billed annually)
  • Email Outreach: $45 per user/month (billed annually)
  • Sales Engagement: $85 per user/month (billed annually)


Autoklose is a cloud-based sales automation platform tailored for entrepreneurs, sales, and marketing professionals. It streamlines email campaigns, lead generation, and customer contact management, facilitating efficient sales processes through automation and organization.

What’s Autoklose Best For?

  • Contact management: Autoklose provides a centralized database for stakeholders' contact information, ensuring efficient organization and accessibility for streamlined communication.
  • Email management: Autoklose offers email tracking, campaign management, and validation tools to optimize email outreach and enhance engagement with prospects.
  • Reporting: Autoklose delivers real-time reporting and dashboards, enabling users to monitor campaign performance and make data-driven decisions for improved results.
  • Sales intelligence: Autoklose integrates sales intelligence features with team management capabilities, empowering sales teams with valuable insights to drive informed decision-making and enhance sales strategies.
  • Time-saving tools: Autoklose facilitates effortless team management, allowing users to add or remove team members, adjust roles, and manage accounts efficiently, saving valuable time and resources.

Pricing Plan

  • Auto Kloser: $59.99 per user per month
  • Advanced Kloser: $69.99 per user per month
  • Accelerated Kloser: $99.99 per user per month

Smartlead vs Mailshake vs Autoklose: Which is Better?

Smartlead stands out as a superior option for sending bulk cold emails due to its streamlined features tailored for efficient outreach. With a 4.9 rating, Smartlead offers a unified master inbox for real-time monitoring and quick follow-ups, ensuring no potential leads are overlooked. Its AI-driven unlimited email warm-up feature enhances deliverability while email validation and Spintax integration optimize engagement. 

Additionally, Smartlead's dynamic IP addresses enhance security and accessibility. These combined features make Smartlead a top choice for maximizing the effectiveness of bulk cold email campaigns, outshining Mailshake and Autoklose in delivering results and driving revenue growth.

What’s a Rich Text element?

The rich text element allows you to create and format headings, paragraphs, blockquotes, images, and video all in one place instead of having to add and format them individually. Just double-click and easily create content.

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Static and dynamic content editing

A rich text element can be used with static or dynamic content. For static content, just drop it into any page and begin editing. For dynamic content, add a rich text field to any collection and then connect a rich text element to that field in the settings panel. Voila!

How to customize formatting for each rich text

Headings, paragraphs, blockquotes, figures, images, and figure captions can all be styled after a class is added to the rich text element using the "When inside of" nested selector system.

Author’s Details

Rajnish Das

Rajnish Das is an in-house writer at SmartWriter and SmartLead. She writes product-oriented, data-driven content for B2B SaaS audiences and educates them on marketing and sales topics. Her expertise includes outbound marketing techniques like cold emailing and LinkedIn outreach.


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Frequently asked questions

General Questions

What is Smartlead's cold email outreach software?

Email automation FAQs- Smartlead

Smartlead's cold email outreach tool helps businesses scale their outreach efforts seamlessly. With unlimited mailboxes, fully automated email warmup functionality, a multi-channel infrastructure, and a user-friendly unibox, it empowers users to manage their entire revenue cycle in one place. Whether you're looking to streamline cold email campaigns with automated email warmups, personalization fields, automated mailbox rotation, easy integrations, and spintax, improve productivity, or enhance scalability with subsequences based on lead’s intentions, automated replies, and full white-label experience, our cold email tool implifies it in a single solution.

What is Smartlead, and how can it enhance my cold email campaigns?

Email automation FAQs- Smartlead

Smartlead is a robust cold emailing software designed to transform cold emails into reliable revenue streams. Trusted by over 31,000 businesses, Smartlead excels in email deliverability, lead generation, cold email automation, and sales outreach. A unified master inbox streamlines communication management, while built-in email verification reduces bounce rates.
Additionally, Smartlead offers essential tools such as CNAME, SPF Checker, DMARC Checker, Email Verifier, Blacklist Check Tool, and Email Bounce Rate Calculator for optimizing email performance. 

How does the "unlimited mailboxes" feature benefit me?

Email automation FAQs- Smartlead

Our "unlimited mailboxes" feature allows you to expand your email communications without restrictions imposed by a mailbox limit. This means you won't be constrained by artificial caps on the number of mailboxes you can connect and use. This feature makes Smartlead the best cold email software and empowers you to reach a wider audience, engage with more potential customers, and manage diverse email campaigns effectively.

How does Smartlead as a cold emailing tool can automate the cold email process?

Email automation FAQs- Smartlead

Smartlead’s robust cold email API and automation infrastructure streamline outbound communication by transforming the campaign creation and management processes. It seamlessly integrates data across software systems using APIs and webhooks, adjusts settings, and leverages AI for personalised content.

The cold emailing tool categorises lead intent, offers comprehensive email management with automated notifications, and integrates smoothly with CRMs like Zapier, Make, N8N, HubSpot, Salesforce, and Pipedrive. Smartlead supports scalable outreach by rapidly adding mailboxes and drip-feeding leads into active campaigns Sign Up Now!

What do you mean by "unibox to handle your entire revenue cycle"?

Email automation FAQs- Smartlead

The "unibox" is one of the unique features of Smartlead cold email outreach tool, and it's a game-changer when it comes to managing your revenue cycle. The master inbox or the unibox consolidates all your outreach channels, responses, sales follow-ups, and conversions into one centralized, user-friendly mailbox.

With the "unibox," you gain the ability to:
1. Focus on closing deals: You can now say goodbye to the hassle of logging into multiple mailboxes to search for replies. The "unibox" streamlines your sales communication, allowing you to focus on what matters most—closing deals.

2. Centralized lead management: All your leads are managed from one central location, simplifying lead tracking and response management. This ensures you take advantage of every opportunity and efficiently engage with your prospects.

3. Maintain context: The "unibox" provides a 360-degree view of all your customer messages, allowing you to maintain context and deliver more personalized and effective responses.

How does Smartlead ensure my emails don't land in the spam folder?

Email automation FAQs- Smartlead

Smartlead, the best cold email marketing tool, ensures your emails reach the intended recipients' primary inbox rather than the spam folder. 

Here's how it works:
1. Our "unlimited warmups" feature is designed to build and maintain a healthy sending reputation for your cold email outreach. Instead of sending a large volume of emails all at once, which can trigger spam filters, we gradually ramp up your sending volume. This gradual approach, combined with positive email interactions, helps boost your email deliverability rates.

2. We deploy high-deliverability IP servers specific to each campaign. 

3. The ‘Warmup’ feature replicates humanized email sending patterns, spintax, and smart replies.
4. By establishing a positive sender reputation and gradually increasing the number of sent emails, Smartlead minimizes the risk of your emails being flagged as spam. This way, you can be confident that your messages will consistently land in the primary inbox, increasing the likelihood of engagement and successful communication with your recipients.

Can Smartlead help improve my email deliverability rates?

Email automation FAQs- Smartlead

Yes, our cold emailing software is designed to significantly improve your email deliverability rates. It enhances email deliverability through AI-powered email warmups across providers, unique IP rotating for each campaign, and dynamic ESP matching.
Real-time AI learning refines strategies based on performance, optimizing deliverability without manual adjustments. Smartlead's advanced features and strategies are designed to improve email deliverability rates, making it a robust choice for enhancing cold email campaign success.

What features does Smartlead offer for cold email personalisation?

Email automation FAQs- Smartlead

Smartlead enhances cold email personalisation through advanced AI-driven capabilities and strategic integrations. Partnered with Clay, The cold remaining software facilitates efficient lead list building, enrichment from over 50 data providers, and real-time scraping for precise targeting. Hyper-personalised cold emails crafted in Clay seamlessly integrate with Smartlead campaigns.

Moreover, Smartlead employs humanised, natural email interactions and smart replies to boost engagement and response rates. Additionally, the SmartAI Bot creates persona-specific, high-converting sales copy. Also you can create persona-specific, high-converting sales copy using SmartAI Bot. You can train the AI bot to achieve 100% categorisation accuracy, optimising engagement and conversion rates.

Can I integrate Smartlead with other tools I'm using?

Email automation FAQs- Smartlead

Certainly, Smartlead cold email tool is designed for seamless integration with a wide range of tools and platforms. Smartlead offers integration with HubSpot, Salesforce, Pipedrive, Clay, Listkit, and more. You can leverage webhooks and APIs to integrate the tools you use. Try Now!

Email automation FAQs- Smartlead

Is Smartlead suitable for both small businesses and large enterprises?

Smartlead accommodates both small businesses and large enterprises with flexible pricing and comprehensive features. The Basic Plan at $39/month suits small businesses and solopreneurs, offering 2000 active leads and 6000 monthly emails, alongside essential tools like unlimited email warm-up and detailed analytics.

Marketers and growing businesses benefit from the Pro Plan ($94/month), with 30000 active leads and 150000 monthly emails, plus a custom CRM and active support. Lead generation agencies and large enterprises can opt for the Custom Plan ($174/month), providing up to 12 million active lead credits and 60 million emails, with advanced CRM integration and customisation options.

Email automation FAQs- Smartlead

What type of businesses sees the most success with Smartlead?

No, there are no limitations on the number of channels you can utilize with Smartlead. Our cold email tool offers a multi-channel infrastructure designed to be limitless, allowing you to reach potential customers through multiple avenues without constraints.

This flexibility empowers you to diversify your cold email outreach efforts, connect with your audience through various communication channels, and increase your chances of conversion. Whether email, social media, SMS, or other communication methods, Smartlead's multi-channel capabilities ensure you can choose the channels that best align with your outreach strategy and business goals. This way, you can engage with your prospects effectively and maximize the impact of your email outreach.

Email automation FAQs- Smartlead

How can Smartlead integrate with my existing CRM and other tools?

Smartlead is the cold emailing tool that facilitates seamless integration with existing CRM systems and other tools through robust webhook and API infrastructure. This setup ensures real-time data synchronisation and automated processes without manual intervention. Integration platforms like Zapier, Make, and N8N enable effortless data exchange between Smartlead and various applications, supporting tasks such as lead information syncing and campaign status updates. Additionally, it offers native integrations with major CRM platforms like HubSpot, Salesforce, and Pipedrive, enhancing overall lead management capabilities and workflow efficiency. Try Now!

Email automation FAQs- Smartlead

Do you provide me with lead sources?

No. Smartlead distinguishes itself from other cold email outreach software by focusing on limitless scalability and seamless integration. While many similar tools restrict your outreach capabilities, Smartlead offers a different approach.

Here's what makes us uniquely the best cold email software:

1. Unlimited Mailboxes: In contrast to platforms that limit mailbox usage, Smartlead provides unlimited mailboxes. This means you can expand your outreach without any arbitrary constraints.

2. Unique IP Servers: Smartlead offers unique IP servers for every campaign it sends out. 

3. Sender Reputation Protection: Smartlead protects your sender 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. 

4. Automated Warmup: Smartlead’s warmup functionality enhances your sender reputation and improves email deliverability by maintaining humanised email sending patterns and ramping up the sending volume. 

Email automation FAQs- Smartlead

How secure is my data with Smartlead?

Ensuring the security of your data is Smartlead's utmost priority. We implement robust encryption methods and stringent security measures to guarantee the continuous protection of your information. Your data's safety is paramount to us, and we are always dedicated to upholding the highest standards of security.

How can I get started with Smartlead?

Email automation FAQs- Smartlead

Getting started with Smartlead is straightforward! Just head over to our sign-up page and follow our easy step-by-step guide. If you ever have any questions or need assistance, our round-the-clock support team is ready to help, standing by to provide you with any assistance you may require. Sign Up Now!

How can I reach the Smartlead team?

Email automation FAQs- Smartlead

We're here to assist you! You can easily get in touch with our dedicated support team on chat. We strive to provide a response within 24 hours to address any inquiries or concerns you may have. You can also reach out to us at

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