Top 12 Email Warm Up Tools for Better Cold Email Results

Are you trying to find the best email warm up tool? Here are the top 12 choices for 2025:

• Mails.ai

• Lemwarm

• Warmup Inbox

• Mailwarm

• Warmbox

• Mailreach

• Folderly

• Instantly.ai

• Warmy.io

• InboxAlly

• Smartlead.ai

• TrulyInbox

Choosing the right email warm up tool is very important. It helps your emails get delivered better. You will also see more people open your emails. You may get more replies too. If you want the best tool for you, look at the comparison and reviews below.

Key Takeaways

• Email warm-up helps your emails go to inboxes, not spam. It builds a good sender reputation for you.

• Automated warm-up tools save you time. They use real inbox actions to help your emails get delivered.

• Pick tools with unlimited accounts, AI content, inbox rotation, and good analytics for the best results.

• Start warming up your email at least two weeks before big campaigns. Slowly send more emails over time.

• Pick a warm-up tool that matches your business size, budget, and email provider. This makes setup easy and helps you succeed.

What Is Email Warm Up?

Email Warm-Up Explained

You want your emails to land in the inbox, not the spam folder. That’s where email warm up comes in. Email warm up is a process where you slowly start sending emails from a new or inactive account. You do this before you send out big cold email campaigns. The goal is to build a positive sending reputation for your email address. When you use email warm up, you send warm-up emails to real inboxes. These emails get opened, replied to, and sometimes marked as important. This tells email providers that your emails are safe and wanted.

You can use tools to automate the warm-up process. These tools send warm-up emails for you every day. They help you avoid spam filters and improve your sender reputation. You can also track your progress with sender reputation monitoring. This helps you see if your emails are landing in inboxes or spam. If you want to enhance email deliverability, you need to focus on email warm up. It’s a smart way to make sure your emails reach people.

Tip: Start your email warm up at least two weeks before your first big campaign. This gives your account time to build a positive sender reputation.

Why Warm-Up Matters

Warm-up is important for anyone who sends cold emails. If you skip email warm up, your emails might go straight to spam. That means people never see your message. Warm-up helps you build a positive sending reputation. When you have a good reputation, your emails get delivered more often. This is called deliverability. Good deliverability means more people open your emails and reply.

Warm-up emails show email providers that you are a real person. They see that your emails get replies and don’t get marked as spam. This helps your sender reputation grow. You want a positive sender reputation so your emails always reach the inbox. Warm-up also helps with sender reputation monitoring. You can see if your emails are getting better results over time.

If you want to improve your email deliverability, you need to use email warm up. Warmup is not just for new accounts. Even old accounts can use warm-up to keep their reputation strong. Remember, a good sending reputation leads to better results for your cold email outreach.

Best Email Warm Up Tool Features

Key Features Overview

When you choose email warmup software, look for features that help your emails get delivered. The right tool helps you build a good reputation and keeps your emails out of spam. Here are some features you should check for:

• Unlimited email accounts: You can connect many inboxes for better warm-up and more deliverability.

• Inbox rotation: Send emails from different accounts to protect your reputation and avoid spam.

• Automated warm-up: The tool does the warm-up for you, so you do not have to do it yourself.

• Real inbox interactions: Your emails get opened, replied to, and marked as important by real people.

• Analytics: You can see reports about your performance, reputation, and engagement.

• Email verification: Clean your list to help your emails get delivered and lower bounces.

• AI-powered content: Use smart tools to write emails that get more replies and help your reputation.

Tip: Pick email warmup software that has both automated warm-up and real inbox interactions for the best results.

AI and Automation

AI and automation make email warmup much easier. You do not need to spend hours sending test emails or checking your reputation by hand. Automated warm-up tools use big networks of real inboxes to make real inbox interactions. They open, reply, and mark emails as important. This helps your reputation and makes your deliverability better.

AI-driven algorithms change the warm-up speed based on your domain’s age and engagement. The automated warm-up process lets you send more emails safely. It also helps keep your emails out of spam and keeps your reputation strong. You get better deliverability and more engagement without extra work.

Deliverability and Analytics

You want your emails to go to the inbox every time. That is why deliverability and analytics are important. Good email warmup software tracks your email performance, reputation, and engagement. You can see how many emails go to inboxes, how many get replies, and if any go to spam.

Analytics help you find problems early. You can change your plan for better results. The best tools give you clear reports on deliverability, engagement, and reputation. This way, you always know how your warmup is working. You can keep your reputation high and your deliverability strong.

Email Warm-Up Tools Comparison

Features Table

It is important to choose the best email warm-up tools for your business. The table below helps you compare the top email warm up tools. You can see what features each tool has. Some tools let you use unlimited accounts. Others have AI content or inbox rotation. These features help you reach your deliverability goals.

Note: Always check the provider’s website for the latest features. Sometimes, features change or get updated.

Pricing Overview

You probably want to know how much these email warm-up tools cost. Here is a simple list to help you compare prices:

• Mails.ai: Has a free plan. Paid plans start at $24 each month.

• Lemwarm: Starts at $29 each month.

• Warmup Inbox: Starts at $15 each month.

• Mailwarm: Starts at $69 each month.

• Warmbox: Starts at $15 each month.

• Mailreach: Starts at $25 each month.

• Folderly: Starts at $200 each month.

• Instantly.ai: Starts at $37 each month.

• Warmy.io: Starts at $49 each month.

• InboxAlly: Starts at $149 each month.

• Smartlead.ai: Starts at $39 each month.

• TrulyInbox: Starts at $15 each month.

Some email warm up tools have free trials or free plans. Other tools have more features for bigger teams.

Pros and Cons

You might want to know what makes each tool special. The table below shows the main pros and cons for the most popular email warm-up tools. This helps you see which tools help with deliverability, reputation, and warm-up results.

Tip: For the best deliverability, pick email warm-up tools with unlimited accounts, AI content, and strong analytics. These features help you build a good reputation and keep your emails out of spam.

Top 12 Email Warm Up Tools

Mails.ai

If you want one tool for cold email outreach, try Mails.ai. It gives you what you need to warm up emails and improve your sender reputation. You can add as many accounts as you want. You can send as many warm-up emails as you need each day. AI helps you write your messages. The dual-layer warmup uses inbox rotation and campaign warm-up. This keeps your emails out of spam. You also get free email verification to keep your list clean. Advanced analytics help you see your performance, engagement, and deliverability right away.

Here’s how Mails.ai compares to other email warm-up tools:

Mails.ai is great if you want unlimited sending, AI automation, and a special two-step warmup. You can use it for agencies, small businesses, or big teams. The free plan lets you try all main features with Gmail or Google Workspace. Paid plans start at $24 each month.

Best for: Agencies, SaaS, marketing teams, and anyone who needs unlimited email warm-up tools with advanced analytics and automation.

Lemwarm

Lemwarm is a well-known email warm-up service. It works best if you already use Lemlist. It uses a special warm-up network for your business type. Your daily warm-up emails go to inboxes that match your industry. Lemwarm checks your technical setup, like DNS and tracking domains. It sends alerts if something is wrong. You can warm up your real email templates. This helps your outreach style stay the same.

Pros:

• AI-driven warm-up makes deliverability better.

• Detailed reports and reputation monitoring.

• Works well with Lemlist.

• Clear pricing with two main plans.

Cons:

• Not many free features.

• Only works with Lemlist.

• Smaller warm-up network than some others.

Pricing: Essential plan is $29 each month, Smart plan is $49 each month.

Best for: Lemlist users, small businesses, and anyone who wants warm-up emails for their industry and easy setup.

Warmup Inbox

Warmup Inbox helps you build sender reputation by sending daily warm-up emails to over 20,000 real inboxes. The tool takes your emails out of spam, replies to them, and marks them as important. This helps boost engagement and keeps your emails out of spam. You will see fewer bounces and better results for your campaigns.

Pros:

• Big warm-up network.

• Takes emails out of spam.

• Replies and marks emails as important.

• 7-day free trial.

Cons:

• DNS checking only in the top plan.

• Price goes up with more inboxes.

Pricing: Starts at $15 each month for every inbox.

Best for: Businesses that want better deliverability with a big network and need daily warm-up emails for many accounts.

Mailwarm

Mailwarm makes it easy to automate your warm-up process. You pick how many warm-up emails to send each day. The tool sends them from your account to real inboxes. It tracks engagement and sender reputation, so you always know how you are doing. Mailwarm is simple to set up and works well for small teams.

Pros:

• Automated warm-up emails.

• Tracks sender reputation.

• Easy to set up.

Cons:

• Higher starting price.

• Not many advanced features.

Pricing: Starts at $69 each month.

Best for: Small teams and people who want a simple email warm-up service.

Warmbox

Warmbox uses AI to send daily warm-up emails and boost your sender reputation. You get inbox rotation, so your emails come from different accounts. The tool is simple to use and helps you avoid spam filters. Warmbox also gives you analytics to track your engagement and performance.

Pros:

• AI-powered warm-up.

• Inbox rotation.

• Simple to use.

Cons:

• No free plan.

• Not many integrations.

Pricing: Starts at $15 each month.

Best for: People who want AI warm-up and easy analytics.

Mailreach

Mailreach helps you fix deliverability problems with smart warm-up features. You can limit daily cold emails to act like a real person. Use one sending address for each domain. Warm up each address with at least 15% of your volume. Mailreach also tests deliverability and checks spam scores. This helps you fix problems before they hurt your campaigns.

Pros:

• Smart warm-up strategies.

• Deliverability testing.

• Spam score checking.

• Advanced analytics.

Cons:

• No free plan.

• Price is per inbox.

Pricing: Starts at $25 each month for every inbox.

Best for: Cold email senders who want to avoid spam filters and need detailed tracking.

Folderly

Folderly is a top email warm-up service with deep deliverability insights. It uses AI to send daily warm-up emails, watch engagement, and give strong analytics. Folderly helps you fix technical problems and improve sender reputation. It works best for big businesses that need advanced features.

Pros:

• AI-powered warm-up.

• Deep analytics.

• Finds technical problems.

Cons:

• High price.

• Best for big businesses.

Pricing: Starts at $200 each month.

Best for: Large companies and teams that need advanced analytics and technical help.

Instantly.ai

Instantly.ai lets you add unlimited accounts, use AI content, and get inbox rotation. You can send daily warm-up emails and track engagement with detailed analytics. Instantly.ai is good for growing your outreach and keeping emails out of spam.

Pros:

• Unlimited accounts.

• AI content.

• Inbox rotation.

• Advanced analytics.

Cons:

• No free plan.

• New users may need time to learn.

Pricing: Starts at $37 each month.

Best for: Growing businesses and agencies that need to scale their email warm-up tools.

Warmy.io

Warmy.io lets you connect unlimited accounts and send daily warm-up emails with AI content. You get email verification, inbox rotation, and analytics to track your results. Warmy.io is flexible and works for teams of any size.

Pros:

• Unlimited accounts.

• AI content.

• Email verification.

• Inbox rotation.

Cons:

• No free plan.

• Price depends on how much you use.

Pricing: Starts at $49 each month.

Best for: Teams that need flexible email warm-up tools and want to check their lists.

InboxAlly

InboxAlly uses AI to send daily warm-up emails and improve your sender reputation. It has inbox rotation and tools to watch engagement and performance. InboxAlly is made for businesses that want to keep emails out of spam.

Pros:

• AI content.

• Inbox rotation.

• Sender reputation tools.

Cons:

• High price.

• No free plan.

Pricing: Starts at $149 each month.

Best for: Businesses that need advanced sender reputation management and analytics.

Smartlead.ai

Smartlead.ai gives you unlimited accounts, AI content, and inbox rotation. You can send daily warm-up emails, check your lists, and track engagement with advanced analytics. Smartlead.ai is great for agencies and teams that want to automate outreach.

Pros:

• Unlimited accounts.

• AI content.

• Email verification.

• Inbox rotation.

Cons:

• No free plan.

• Some advanced features may need setup.

Pricing: Starts at $39 each month.

Best for: Agencies and teams that want full automation and advanced analytics.

TrulyInbox

TrulyInbox is known for being easy to grow and easy to use. You can warm up as many email accounts as you want on any plan. It works with all major email service providers. Setup takes less than five minutes. You get a simple dashboard to manage your warm-up campaigns. TrulyInbox has a forever-free plan, so any business can use it.

If you want to grow fast and set up quickly, TrulyInbox is a good choice.

Best for: Businesses of any size that want unlimited warm-up emails and easy integration.

How to Choose Email Warm Up Tools

Selection Criteria

Picking the best email warm up tool can feel tricky. You want something that fits your goals and makes your life easier. Here’s a simple checklist to help you decide:

1. Look for automated sending and replying. This saves you time and keeps your warm-up steady.

2. Make sure the tool works with your email provider. You want smooth integration, not headaches.

3. Check if the dashboard is easy to use. A clear setup means you spend less time learning and more time sending.

4. If you have a team, see if the tool supports multiple accounts and team members.

5. Read reviews about customer support. Good help can solve problems fast.

6. Compare the price with the features you get. You want the best value for your money.

Tip: Write down your must-have features before you start shopping. This helps you stay focused and find the best email warm up tool for your needs.

Matching Tools to Business Needs

Every business is different. You might run a small agency or a big company. Your needs will shape which email warm-up service works best for you.

If you use many email accounts, pick a tool that lets you add unlimited accounts. For teams, choose a service with easy team management. If you want to save time, look for strong automation and AI features. Some tools offer deep analytics, which helps if you like tracking results. Always check if the tool fits your budget and supports your email provider.

Here’s a quick table to help you match features to your needs:

Choosing the right email warm-up service helps you reach more inboxes and grow your business faster.

Email Warm-Up Best Practices

Manual vs. Automated Warm-Up

You might ask if you should warm up emails yourself or use a tool. Manual warm up means you send each warm-up email by hand. You have to open, reply, and mark them as important. This takes a lot of time and is hard work. It gets even harder if you have many accounts. Automated warm up uses software to send warm-up emails for you every day. The tool does all the work, so you save time and get better results.

Here’s a quick look at how they are different:

Most people pick automated warm up. You get more replies, a better reputation, and stronger results. Tools like Mails.ai make email warm up easy and helpful.

Warm-Up Timelines

You need to give your email warm up enough time to work. Start warming up at least two weeks before big campaigns. Send warm-up emails every day to build a good reputation. Begin with just a few emails. Add more each day, but do it slowly. This helps your reputation grow in a natural way. If you go too fast, your emails might go to spam. Follow your warm-up plan and you will see better engagement.

Tip: Mails.ai has guides to help you set up the best warm-up timeline. You can find step-by-step help in their Help Center.

Avoiding Common Mistakes

Many people make mistakes with email warm up. They send too many warm-up emails too quickly. Some skip days or stop warming up too soon. Others forget to check if people are opening or replying. Some use the same message for every email, which is not good. You should always use different warm-up emails and check your results. Switch between inboxes and watch your reputation. Use analytics to see how you are doing and change your plan if needed.

Note: Mails.ai gives you tools to help avoid these mistakes. Their platform has analytics, inbox rotation, and AI content to help your engagement and reputation.

Choosing the best email warm-up tool can really help your cold emails. You want your emails to get delivered, opened, and trusted. Mails.ai lets you use as many accounts as you need. It has dual-layer warmup, AI content, free verification, inbox rotation, and advanced analytics. These features help your reputation and make more people interact with your emails. When your deliverability is better, more people will see what you send. Look at the comparison, think about what you need, and choose the tool that works for you. Want to get better engagement and a stronger reputation? Try it for free today! 🚀

FAQ

What is an email warm-up tool?

An email warm-up tool helps you build a good sender reputation. It sends and receives emails for you. This makes sure your emails land in inboxes, not spam folders.

How long should I warm up my email account?

You should warm up your email account for at least two weeks. If you plan a big campaign, start even earlier. This gives your account time to build trust with email providers.

Can I use multiple email accounts with these tools?

Yes, many tools let you connect several email accounts. Some, like Mails.ai, offer unlimited accounts. This helps you scale your outreach and keep your sender reputation strong.

Do I need technical skills to use an email warm-up tool?

No, you don’t need to be a tech expert. Most tools have easy dashboards and guides. You can set up your warm-up process in just a few clicks.

Tip: If you ever get stuck, check the tool’s help center or support team for quick answers!