You craft compelling cold emails and launch a campaign, only to see your emails landing in the spam folders. Sounds familiar? 

If you have ever faced this issue and want your cold emails to land in your prospects’ inboxes, bypassi ng the SPAM folders, then this article is for you. Email warmup is a crucial process of building a good sender reputation and maintaining high-deliverability of your email accounts. 

There are lots of email warmup tools available to choose from. In this article, let’s check out the top 9 best email warmup tools for cold outreach in 2024 with detailed reviews. 

Understanding Email Warm-up

Email warm-up is a strategic process of establishing and enhancing trust with Email Service Providers (ESPs) by sending system-generated (automated) or manually crafted emails from a new inbox. 

The warm-up journey prompts responses (often automated) to showcase engagement to the ESP. This automated process lends authenticity to the email activity, gradually building trust with ESPs. Advanced email warm-up tools leverage AI and machine learning, orchestrating simulated business interactions that mimic genuine engagement, thereby tricking ESPs into recognizing legitimacy.

A proper warm-up isn't a rushed task; it's a gradual process spanning at least 2 weeks for a new inbox. 

How Do You Choose an Email Warm Up Tool?

Choosing the right email warmup tool is crucial for ensuring that your emails reach the inbox and avoid the spam folder. Here are key factors to consider when selecting an email warmup tool:

1. Features and Functionality

Look for tools that offer comprehensive features such as:

• Automated Human-like Interactions: Tools that mimic human behavior in email interactions can improve your email deliverability by sending and replying to emails in a natural manner.
• Customizable Warm-Up Settings: The ability to adjust the pace of the warm-up process based on your specific needs is important. This includes setting daily limits and customizing the type of interactions.
• Detailed Analytics and Reporting: Choose tools that provide in-depth analytics to monitor your email deliverability, sender reputation, and the effectiveness of your warm-up activities.

2. Integration with Email Service Providers (ESPs)

Ensure that the tool integrates seamlessly with your existing email service providers such as Gmail, Outlook, or any other platform you use. Compatibility with multiple ESPs allows for greater flexibility and ease of use.

3. Network Size and Quality

The effectiveness of an email warmup tool often depends on the size and quality of its network. Tools that leverage a large network of high-reputation email accounts can provide more reliable results. For instance, Smartlead has a network of over 10,000 high-reputation email accounts. 

4. Ease of Setup and Use

Consider how easy it is to set up and use the tool. Tools that offer a quick setup process and a user-friendly interface can save you time and reduce the complexity of the warm-up process. Look for options that can be activated with just a few clicks and provide clear instructions.

5. Pricing and Value

Evaluate the pricing plans and ensure that they align with your budget and needs. Some tools offer free trials or freemium models, which can be beneficial for testing the service before committing to a paid plan. Compare the cost against the features offered to determine the best value for your investment.

6. Customer Support and Community

Access to reliable customer support and a helpful user community can be invaluable. Check if the tool offers robust support options such as live chat, email support, and comprehensive help centers. Engaging with a user community can also provide insights and tips on maximizing the tool's effectiveness.

7. Reviews and Testimonials

Research user reviews and testimonials to get an understanding of the tool’s performance and reliability. Look for feedback from users with similar needs to yours. Websites like G2, Capterra, and Trustpilot can provide detailed reviews from other users.

Top 9 Best Email Warm-up Tools for Your Cold Outreach in 2024

Here are the 9 best email warm-up tools for cold outreach in 2024 with detailed reviews and pricing plans. 

1. Smartlead 

Smartlead is a comprehensive cold emailing tool for omnichannel outreach. With its unlimited mailboxes and automated email warmups, this sales engagement tool ensures your emails always land in your prospects’ inboxes. 

It offers auto-rotating email accounts, so you don’t need to worry about daily sending limits and sender reputation. Smartlead lets you automate your entire sales flow with cold emails, and follow-up emails. You get a full whitelabel experience at Smartlead. Moreover, its useful integrations and the master inbox for managing all conversations and this is the best tool for multichannel email outreach.

Notable Features 

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 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 to 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.

Pricing 

Smartlead offers a 14-day free trial. 

• Basic Plan: $33 per month 
• Popular Plan: $65 per month 
• Pro Plan: $78 per month
• Custom Plan: Customizable pricing 

2. Warmup Inbox

Warmup Inbox offers a complete email warmup solution with IP rotation, reputation monitoring, and automated email sequences. This software builds positive engagement patterns with ISPs (Internet Service Providers) by replicating real user engagement such as opening emails and clicking. 

You can gradually increase the number of emails sent and engagement levels to build trust and credibility as a legitimate sender with ESPs. Warmup Inbox offers real-time notifications, deliverability reports, and real-time analytics to keep you updated about the progress of your warmup campaigns. With a user-friendly interface, Warmup Inbox offers you seamless integrations with email service providers. 

Notable Features

• Outlook, Gmail, and SMTP integration 
• Domain age tracking 
• Blacklist monitoring 
• Full sending control 
• Inbox health scores
• Real-time notifications & analytics
• Sender Reputation Calculator 

Pricing 

• Basic: $15 per month per inbox; paid yearly
• Pro: $29 per month per inbox; paid yearly
• Max: $79 month per inbox; paid yearly

3. Lemwarm by Lemlist 

A product of the cold emailing tool Lemlist, Lemwarm is specifically created for email warmups. It gradually increases the sending volume, replicating human-like email-sending patterns. This natural sending pattern helps you bypass spam filters deployed by ESPs and land directly in your prospects’ inboxes. 

If you are sending emails from multiple email accounts or have a team to send multiple campaigns at a time, you can warmup all your email addresses and monitor the deliverability progress in one place. Moreover, Lemwarm offers integrations with Gmail and Office 365. 

Notable features 

• Conversation threads
• Control daily sending limits 
• Detailed reports 
• Gmail and Office 365 integrations
• Detailed reports 
• 25 years+ domain range
• Real-time email address and human-like conversations
• Auto-remove from spam

Pricing 

No free trial is available. 

• Smart: $490 per year 
• Essential: $290 per year

4. Folderly 

Folderly is an all-in-one email deliverability platform that improves email deliverability for any ESP. This AI-based platform helps fix domain reputation so your emails land directly in your recipient's inbox. 

Like Warmup Inbox, Folderly also replicates human-like sending behaviors to stay spam-compliant and boasts a 99.9% inbox placement. Moreover, Folderly also offers all its features with its 7-day free trial. 

Notable Features

• Integration with the most popular ESPs 
• Deliverability tests 
• Spam checker tool 
• Email deliverability audit 
• Template analysis 

Pricing 

$96 per mailbox per month; offers a 7-day free trial

5. InboxWarm by OutreachBin 

With positive interactions with your emails, InboxWarm by OutreachBin offers exclusive email warmup features. InboxWarm moves spam emails to inbox and replies to emails to increase your sender reputation to ensure inbox delivery. 

OutreachBin’s algorithm works on a peer-to-peer network for email warmups. It means that your warmup emails are sent to recipients who are also warming up their email addresses, and you automatically become a part of the vast network. Moreover, InboxWarm by OutreachBin offers integrations with Gmail, SMTP, and Outlook. 

Notable Features

• Peer-to-peer network for warmups 
• Connects with Gmail, SMTP, Outlook, and other popular inboxes
• Auto-remove from spam 
• Warm-up metrics 

Pricing 

• 3 months: $39.99 per month for one email account
• 6 months: $24.99 per month for one email account
• 12 months: $19.97 per month for one email account

6. Mailreach

Mailreach is another excellent email warmup tool in 2024. It helps you build a sender reputation by maintaining interactions with over 20K+ real business accounts. Also, the warmup infrastructure lets you communicate with higher reputation inboxes and maintain natural human-like communications to improve deliverability. 

Mailreach verifies your inbox’s DNS configuration and it makes sure your email addresses don’t land on blacklists. This tool offers integrations with Google Workspace, Office 365, SendGrid, MailGun, and custom SMTP. Moreover, Mailreach offers an inbuilt spam checker for your outreach emails.  

Notable Features

• 30k+ high-reputation inboxes network
• Automatic spam tests
• Reputation view by inbox provider
• API
• Overview with scores per domain
• Easy to manage hundreds of inboxes

Pricing 

• Starter: $25 per email account per month
• Scale: $19.5 per email account per month 

7. Snov.io

The last one on our list, Snov.io, is an all-in-one email warmup, lead generation, and outreach platform. It offers deliverability monitoring for your inboxes and fully automated email warmups. The hyper-intelligent AI creates human-like conversations for better inbox placement and improved email open rates. You can set up SMTP easily in Snov.io and the major email service providers. 

Notable Features

• Fully automated email warmups 
• Easy set-up and user-friendly interface
• Hyper-intelligent AI to craft realistic same-thread conversations
• Placement insights and warmup progress status

Pricing 

• Trial: $0 per month 
• Starter: $30 per month 
• Pro: $75 per month 
• Managed Service: Starts at $3999 per month 

8. Warmbox

Warmbox stands out as a standalone email warming strategy service, offering an exceptional user interface and user experience. The tool offers the flexibility of communicating automatically as humans. You also get detailed analytics and reporting to track the progress of your emails.

Notable Features

• Leverages the power of GPT-4
• Utilizes a complex and proprietary algorithm
• Can seamlessly integrate with popular email services like Gmail, Outlook, etc. 
• Ongoing Spam Score Monitoring

Pricing 

• Solo: $15 per month 
• Start-up: $69 per month 
• Growth: $139 per month 
• Team: Customizable pricing plan

9. Mailwarm

Mailwarm is a straightforward and comprehensive email warming solution designed to enhance the quantity and quality of your email activity for improved inbox placement. It also offers dashboard monitoring for real-time insights and control over your daily warm-up activity.

Notable Features

• Engagement with +1000 Mailwarm Email Addresses
• Customizable Send and Reply Schedule
• Quick Setup in Two Minutes
• Compatible with Multiple Inboxes

Pricing

Mailwarm does not offer a free trial period.

• Starter: $69 per month 
• Growth: $159 per month 
• Scale: $479 per month

10. Saleshandy

Saleshandy is a versatile email warming solution tailored to enhance your email deliverability and reputation, ensuring your messages reach the inbox and avoid the spam folder. With features that automate the warm-up process, Saleshandy aims to save time and resources for users by providing a seamless, effective email warm-up experience.

Notable Features

• Integration with TrulyInbox with a network of over 10,000 email accounts
• Automated human-like interactions
• Customizable warm-up settings
• Detailed analytics and reporting

Pricing  

Outreach Starter: $36 per month

Outreach Pro: $99 per month

Outreach Scale: $199 per month

Outreach Scale Plus 100K: $299 per month

Outreach Scale Plus: Various plans up to $2999 per month

How Does Smartlead Top the List of Best Email Warmup Tools?

If you’re searching for an effective email warmup solution backed by AI, you can try Smartlead. 

The email warmup tool ensures optimal inbox delivery by emulating human-like conversations, enhancing your sender reputation. The standout feature is the unlimited AI warmups, which can efficiently scale your outreach to reach multiple inboxes simultaneously.

Smartlead's innovative feature also includes warming up your campaign copy, increasing primary inbox placement, and boosting open rates for a successful email campaign.

Notable Features

• Powered by AI 
• Self-adjusting warmup infrastructure
• Rapid warm up setup in 3 clicks
• Human-like patterns for superior inbox placement
• Slow ramp-up strategy to ensure natural email account transition
• Multiple email accounts warmup at once

The basic plan starts at $33 per month (apart from email warmups, you also get 2000 active leads. For unlimited warmups, you can pick the $65 per month plan offering 10000 active leads. The pro plan comes at $78 per month. If you need a customized plan, you can contact the team. 

How Do You Choose an Email Warmup Tool?

When choosing an email warmup tool, asking the right questions is crucial to ensure it aligns with your needs and goals. Consider:

• Automation Features: Does the tool allow you to automate the warmup process, including gradual increases in email volume, or does it require constant manual adjustments?
• Personalization Options: How robust are the personalization features? Can you customize your emails to create a more genuine connection with your audience?
• Tracking and Analytics: What kind of tracking capabilities does the tool offer? Can it provide insights into your sender reputation, email engagement, and delivery rates?
• Adaptability: Is the tool flexible enough to adapt to changes in your outreach strategy? Can it be adjusted easily if you encounter any issues or need to refine your approach?
• Integration Possibilities: Does the tool integrate seamlessly with your existing email platform or CRM system? A smooth integration can save time and streamline your overall outreach process.
• User-Friendly Interface: Is the tool user-friendly? A straightforward interface can make the warmup process more manageable and less time-consuming.

Conclusion 

Optimizing your email warm-up process is crucial for achieving better deliverability, engagement, and overall success in your email marketing campaigns. The 7 best email warm-up tools discussed in this blog post offer a range of features and capabilities to suit different needs and preferences.

Incorporating these tools into your email strategy can significantly impact your sender reputation, ensuring that your emails reach the inbox and drive positive engagement. 

As you explore these tools, consider your specific requirements, budget, and the level of automation you desire. By leveraging these email warm-up tools effectively, you'll be well on your way to maximizing the impact of your email campaigns and building lasting connections with your audience.

FAQs

Why is email warmup necessary for cold outreach?

Email warmup is crucial for establishing a positive sender reputation with email service providers. It helps build trust gradually, reducing the likelihood of your emails being marked as spam and increasing the chances of reaching the recipient's inbox.

How long does the email warmup process typically take?

The duration of email warmup varies depending on factors like the size of your contact list and the email warmup strategy employed. Generally, it can span from a few days to a few weeks, with a gradual increase in email volume.

Can I perform an email warmup manually without using a tool?

While it's possible to conduct manual email warmup, using dedicated tools offers automation, scheduling, and tracking features that significantly streamline the process. These tools are designed to optimize the warmup sequence for better results.

Are there risks associated with email warmup, and how can they be mitigated?

There's a minimal risk if done correctly. However, sending too many emails too quickly can still trigger spam filters. Mitigate this risk by following a gradual warmup schedule, monitoring analytics, and using reputable warmup tools that adapt to your needs.

Can I warm up emails for any campaign, or is it specific to cold outreach?

Email warmup is particularly beneficial for cold outreach, where establishing trust is critical. However, it can also be applied to other campaigns, such as re-engaging with a dormant subscriber list or launching a new product to your existing audience.