When you send out cold emails, you want to be sure they land in the inbox rather than vanish into the spam folder. Warming up your email account is the key to building a solid sender reputation, especially if you’re starting out or reviving an inactive account. In this guide, we’ll explore what email warmup is, why it’s essential, and review the 10 best email warmup tools of 2024 along with their features, pricing, and benefits.

Understanding Email Warmup

What Is Email Warmup?

Email warmup is the process of gradually increasing the volume of emails you send so that email providers recognize your account as legitimate. Instead of blasting out large batches of emails from a new or dormant account, a warmup tool simulates natural email activity. This includes sending and receiving messages, opening, replying, and engaging in real interactions that mimic everyday use.

One can additionally try out email drip campaigns to capitalize during the email warmup period.

Why Warmup Is Crucial

  • Improves Deliverability: A gradual warmup builds your sender reputation, making it more likely your messages reach the primary inbox.
  • Avoids Spam Traps: By slowly ramping up activity, you reduce the risk of triggering spam filters.
  • Enhances Engagement: With a better reputation, your emails are more likely to be opened and acted upon, boosting campaign results.

Choosing the Right Warmup Tool

Before diving into our list, consider these key factors when selecting a tool:

  • Volume Needs: How many emails do you plan to send daily?
  • Budget: What pricing plans align with your resources?
  • Features: Look for tools that offer detailed deliverability reports, blacklist monitoring, and real-time insights.
  • Integration: Ensure the tool works seamlessly with your email provider, whether it’s Gmail, Outlook, or another service.

Top 10 Email Warmup Tools of 2024

Below is a detailed look at ten standout warmup tools designed to enhance your email campaigns.

1. Mailflow

Overview:
Mailflow automatically sends and receives emails that mimic real business interactions. Its goal is to help your messages land in primary inboxes rather than spam.

Key Features:

  • Warm up to 100 email addresses at no cost.
  • Provides detailed insights on inbox placement (primary, spam, and Gmail Promotions).
  • Uses real business language and low-code methods to bypass smart spam filters.
  • Monitors nearly 100 blacklists for quick detection if you get blacklisted.

Pricing Plans:

  • Free Pool: Up to 100 email addresses, 5 warmup emails/day (Free)
  • Silver Pool: $49/month, 30 warmup emails/day, domain blacklist monitoring.
  • Gold Pool: $99/month, 50 warmup emails/day, domain and IP blacklist monitoring.

2. Warmup Inbox

Overview:
Warmup Inbox connects your email account with a network of real inboxes, ensuring natural interactions with major providers such as Gmail, Outlook 365, Yahoo Mail, and more.

Key Features:

  • Displays a clear “health score” for your inbox.
  • Monitors email blacklists to assess your sender reputation.
  • Delivers robust features at an affordable price.
  • Designed to run for 45–90 days before you launch sales campaigns.

Pricing Plans:

  • Basic: $15/month billed annually, 75 warmup messages/day.
  • Pro: $49/month billed annually, 250 warmup messages/day.
  • Max: $79/month billed annually, 1,000 warmup messages/day.

3. Warmbox

Overview:
Warmbox offers an excellent user experience with a sleek design. It integrates with major email providers and provides actionable deliverability reports.

Key Features:

  • Continuous spam score monitoring.
  • Flexible email-sending schedules that mimic natural usage.
  • Automatically recommends the best warmup strategy using smart rules.
  • Includes a free IP/Domain Blacklist and DNS deliverability checker.

Pricing Plans:

  • Solo: $15/month (50 emails/day)
  • Start-Up: $69/month (250 emails/day)
  • Growth: $139/month (500 emails/day)
  • Team: Custom pricing for larger teams.

4. Mailwarm

Overview:
Mailwarm is a premium tool aimed at fostering quality engagement. It works to ensure that your emails not only avoid spam but are opened, marked as important, and even replied to.

Key Features:

  • Boosts both quantitative and qualitative email activity.
  • Customizable sending and reply schedules.
  • Provides daily activity insights and allows you to adjust or pause warmup routines.

Pricing Plans:

  • Starter: $69/month for 50 emails/day (1 account, 1 seat)
  • Growth: $159/month for 200 emails/day (up to 3 accounts, 2 seats)
  • Scale: $479/month for 500 emails/day (up to 10 accounts, 5 seats)

5. WarmUpYourEmail

Overview:
This service uses a team of real people to engage with your emails—opening, replying, and marking them as important—to build your sender reputation.

Key Features:

  • Real human interaction with your emails.
  • Free tools available for checking DMARC, SPF, and SMTP settings.
  • Compatible with all major email providers.

Pricing Plans:

  • Solo Sender: $29/month for 1 email account, up to 50 positive engagements/day.
  • Agency Sender: $99/month for up to 8 email accounts, with 100 positive engagements/day per account.

6. Mailreach

Overview:
Mailreach is a user-friendly platform that automates your email warmup process, offering comprehensive deliverability reports and blacklist monitoring.

Key Features:

  • Fully automated warmup with occasional performance checks.
  • Strategic volume increases to help repair damaged reputations.
  • User-friendly dashboard for real-time insights.

Pricing:
Pricing varies based on the number of mailboxes and spam test credits. For example, warming one mailbox with 20 spam test credits starts at $25/month. (Check their pricing page for custom quotes.)

7. Folderly

Overview:
Folderly is tailored for larger organizations and high-volume campaigns. Its advanced features include in-depth email content analysis and robust diagnostics.

Key Features:

  • Offers detailed content analysis to improve deliverability.
  • Includes a comprehensive deliverability audit.
  • Provides tools like email spam checkers, SPF generators, and DMARC generators.

Pricing Plans:

  • 1-9 Mailboxes: $120 per mailbox/month.
  • 10-24 Mailboxes: $90 per mailbox/month.
  • 25-99 Mailboxes: $70 per mailbox/month.
  • 100+ Mailboxes: Custom pricing.

8. Warmy

Overview:
Warmy leverages AI algorithms to automate the warmup process, ensuring your inboxes engage naturally with a clear, visual progress dashboard.

Key Features:

  • Uses AI to simulate natural email interactions.
  • Offers a deliverability checker for comparisons across major providers.
  • Provides strong customer support to resolve any issues quickly.

Pricing Plans:

  • Starter: $49 per mailbox for 100 warmup emails/day.
  • Business: $129 per mailbox for 300 warmup emails/day.
  • Premium: $189 per mailbox for 1,000 warmup emails/day.
  • Expert: $279 per mailbox for 2,000 warmup emails/day.
  • Platinum: $429 per mailbox for 5,000 warmup emails/day.

9. Mailivery

Overview:
Mailivery is an advanced warmup tool that helps you simulate natural email patterns with custom schedules. It supports major providers and is designed to build a positive sender reputation.

Key Features:

  • Customizable warmup schedules that mimic natural email habits.
  • Peer-to-peer network integration for authentic warmup patterns.
  • Provides actionable recommendations if you’re blacklisted.

Pricing Plans:

  • Free Plan: Up to 10 emails/day.
  • Starters: $29/month for up to 100 emails/day.
  • Professional: $79/month for up to 600 emails/day.
  • Business: $199/month for up to 2,000 emails/day.
  • Supports multiple team members as needed.

10. Reply

Overview:
Reply is not just a warmup tool but a comprehensive sales outreach platform. Its warmup add-on is designed for Google Workspace and Outlook, ensuring your emails land in the primary inbox.

Key Features:

  • Seamlessly integrates with your existing outreach tools.
  • Uses real inbox interactions to mimic genuine email activity.
  • Provides clear reporting on where your emails are delivered during the warmup process.

Pricing Plans:

  • Email Volume: Starts at $29/month (billed annually).
  • Multichannel: Starts at $53 per user/month (billed annually).
  • Agency: Starts at $166/month (billed annually).
  • Each plan offers free warmup with every mailbox along with scalable outreach features.

Tips for Maximizing Your Email Warmup Strategy

Plan Your Warmup Period

  • Consistency Is Key: Run your warmup process consistently for 45–90 days before launching major campaigns.
  • Monitor Metrics: Keep an eye on your health scores and deliverability reports to gauge progress.

Optimize for Engagement

  • Mix It Up: Use a combination of real interactions (replies, opens) and automated schedules to mimic natural behavior.
  • Adjust Based on Feedback: If you notice poor placement or blacklist issues, adjust your warmup settings or switch tools if necessary.

Maintain a Clean Sender Reputation

  • Regular Audits: Utilize the built-in monitoring tools and blacklist checks to stay ahead of potential issues.
  • Follow Best Practices: Keep your email content authentic and engaging to avoid spam triggers.

Conclusion

Warming up your email account is a crucial step in ensuring that your outreach efforts achieve the highest possible deliverability. With a well-planned warmup strategy and the right tool, you can build a strong sender reputation that helps your messages reach the intended audience and generate better engagement.

Whether you are a small business owner or part of a large team, the right warmup tool can save time, improve campaign performance, and protect your email reputation. Explore the options above, consider your needs and budget, and start building the foundation for successful email campaigns today.

Looking for a service to improve your Email CTRs? Book a call with Inagiffy.​