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12 Best Email Deliverability Tools In 2024: Reviewed And Compared

Yaro Y.
Updated On
August 6, 2024

In the world of digital marketing, email deliverability is extremely important. It determines whether your carefully crafted emails actually reach your audience's inbox or end up in the spam folder. To keep your customers engaged and communicate effectively, it's crucial to have high email deliverability rates.

This article will review and compare the 12 best email deliverability tools of 2024. We'll highlight their unique features and benefits to help you choose the right tool for improving your email marketing strategy and ensuring your messages always land in your subscribers' inboxes.


Understanding Email Deliverability

Email deliverability is the ability of an email to successfully reach the recipient's inbox without being diverted to spam or junk folders. This metric is crucial in email marketing as it directly impacts engagement rates and campaign success.

Key Factors Affecting Email Deliverability:

  • Bounce Rate: High bounce rates indicate that a significant number of emails are not reaching valid addresses, negatively affecting your sender reputation.
  • Sender Reputation: This score reflects the trustworthiness of your email-sending IP and domain. A poor sender reputation can lead to emails being blocked or sent to spam.

The Role of Spam Filters:

Spam filters evaluate incoming emails based on various criteria such as content, sender reputation, and recipient engagement. Emails flagged by these filters often end up in the spam folder, reducing visibility and engagement. Understanding how these filters work helps optimize inbox placement, ensuring your messages reach their intended audience effectively.

By mastering these elements, you enhance your email marketing efforts and secure higher open rates and conversions.


Key Features to Look For in an Email Deliverability Tool

1. Intuit Mailchimp

Intuit Mailchimp is a powerful email deliverability tool that offers a wide range of features for both beginner and experienced marketers. Here’s why Intuit Mailchimp is a top choice:

Authentication Support

To ensure your emails land in the inbox instead of the spam folder, it's crucial to implement proper email authentication. Intuit Mailchimp excels in this area by supporting essential protocols such as SPF, DKIM, and DMARC.

  • SPF (Sender Policy Framework): Allows you to specify which mail servers are authorized to send emails on behalf of your domain.
  • DKIM (DomainKeys Identified Mail): Adds a digital signature to your emails, making them less likely to be tampered with during transit.
  • DMARC (Domain-based Message Authentication, Reporting & Conformance): Provides instructions on how to handle emails that fail SPF or DKIM checks, thus protecting your domain from phishing and spoofing attacks.

These authentication protocols are critical in maintaining a high sender reputation and ensuring that your emails make it past spam filters.

List Management Tools

Effective list management is another key factor in achieving high deliverability rates. Intuit Mailchimp offers advanced tools for:

  • Audience Segmentation: Tailors your email campaigns by dividing your contacts into different segments based on behavior, demographics, or other criteria.
  • List Cleaning: Automatically removes inactive or invalid email addresses from your lists to reduce bounce rates and improve engagement metrics.
  • Subscription Options: Manages opt-ins and opt-outs seamlessly, ensuring compliance with regulations like GDPR and CAN-SPAM.

A/B Testing Capabilities

To consistently optimize email performance, Intuit Mailchimp provides robust A/B testing features. These capabilities allow you to experiment with various elements of your emails:

  • Subject Lines: Test different subject lines to see which one garners higher open rates.
  • Content Variations: Compare different versions of email content to identify what resonates best with your audience.
  • Send Times: Determine the best time to send emails for maximum engagement.

By leveraging A/B testing, you can make data-driven decisions that enhance the effectiveness of your campaigns.

Delivery Insights

Understanding how well your emails perform after they are sent is crucial. Intuit Mailchimp’s delivery insights provide detailed analytics on:

  • Open Rates
  • Click-through Rates
  • Bounce Rates
  • Spam Complaints

These metrics help you monitor the health of your email campaigns and make necessary adjustments to improve deliverability.

Feedback Loops

Feedback loops are invaluable for maintaining a positive sender reputation. Intuit Mailchimp collects feedback from major ISPs (Internet Service Providers) regarding how recipients interact with your emails. If someone marks your email as spam, this information is relayed back to you, enabling you to remove uninterested recipients from future campaigns.

Benefits of Using Intuit Mailchimp

The combination of authentication support, comprehensive list management tools, sophisticated A/B testing capabilities, insightful delivery analytics, and effective feedback loops makes Intuit Mailchimp an all-in-one solution for improving email deliverability. Its user-friendly interface ensures that even those without extensive technical knowledge can effectively manage their email marketing efforts.

2. Constant Contact

Constant Contact stands out in email deliverability with its powerful real-time monitoring features and effective bounce management capabilities.

Real-Time Monitoring

Constant Contact offers extensive tools for real-time monitoring of email campaigns. Users can track engagement metrics, ensuring that emails reach the intended recipients effectively. This feature helps identify issues quickly and optimize future campaigns.

Bounce Management

Managing bounces is critical for maintaining a positive sender reputation. Constant Contact efficiently handles undeliverable emails by:

  • Removing invalid addresses from mailing lists
  • Tracking hard and soft bounces, allowing for targeted follow-ups or list cleaning

This proactive strategy helps maintain the sender's domain reputation, which is vital for high deliverability rates.

Email Authentication

To improve deliverability, Constant Contact supports key authentication protocols like SPF, DKIM, and DMARC. Implementing these protocols ensures that emails are verified and trusted by receiving servers, reducing the chances of being marked as spam.

Domain Sender Score Tracking

Constant Contact also includes tools for tracking domain sender scores. By continuously monitoring the sender score, users can take corrective actions to enhance their domain’s reputation over time.

Recipient Validation Tools

Recipient validation tools further boost deliverability by verifying email addresses before sending campaigns. This preventive measure reduces bounce rates and improves overall campaign performance.

Constant Contact Reviews

Customers praise Constant Contact for its effectiveness in maintaining high deliverability standards. The platform's user-friendly interface and comprehensive reporting features have earned it a solid reputation among digital marketers.

3. Instantly

Instantly takes email deliverability to the next level with its unique offerings designed specifically for inbox placement optimization. One standout feature is the warm-up tool. This automated service ensures your emails gradually gain trust from Internet Service Providers (ISPs), significantly enhancing deliverability rates.

Key features of Instantly include:

  • Email Authentication Protocols: Implements SPF, DKIM, and DMARC to authenticate emails, preventing spoofing and improving sender reputation.
  • Domain Sender Score Tracking: Continuously monitors the health of your domain, providing actionable insights to maintain a high sender score.
  • Recipient Validation Tools: These tools ensure your recipient lists are clean and valid, reducing bounce rates and improving overall delivery success.

The campaign builder is another highlight, offering an intuitive interface that simplifies the creation of engaging and personalized email campaigns. Users can easily design, test, and deploy campaigns that resonate with their audience.

By integrating these robust features, Instantly not only ensures higher inbox placement but also enhances user experience through seamless campaign management.

4. Brevo

Brevo stands out in the world of email deliverability with its powerful tools for creating and customizing emails. This platform emphasizes the importance of email authentication protocols such as SPF, DKIM, and DMARC, which are crucial for improving deliverability rates. By ensuring these protocols are correctly implemented, Brevo helps maintain a high sender reputation, reducing the risk of emails being marked as spam.

Key features include:

  • Domain Sender Score Tracking: Monitors and enhances your domain's sender score to ensure optimal inbox placement.
  • Recipient Validation Tools: Validates email addresses to prevent bounces and maintain list hygiene.
  • Personalization Options: Customizes content based on recipient data, enhancing engagement and open rates.

Brevo's integration options allow seamless connectivity with various CRM systems, marketing platforms, and e-commerce tools. This ensures that your email campaigns are not only personalized but also strategically aligned with broader marketing efforts.

Monitoring delivery effectiveness is made easy through Brevo’s integrated features, providing detailed analytics on bounce rates, open rates, and click-through rates. This feedback loop enables continuous improvement of your email strategy, ensuring each campaign performs better than the last.

5. Omnisend

Omnisend stands out with its robust focus on domain signature authentication protocols. Leveraging SPF, DKIM, and DMARC, Omnisend ensures your emails are trusted by ISPs, significantly improving your deliverability rates. Here’s why these protocols are crucial:

  • SPF (Sender Policy Framework): Validates the sending server.
  • DKIM (DomainKeys Identified Mail): Provides a cryptographic signature for email integrity.
  • DMARC (Domain-based Message Authentication, Reporting & Conformance): Aligns SPF and DKIM results to protect against spoofing.

Key Features:

  • Domain Sender Score Tracking: Continuously monitors sender reputation to maintain high deliverability.
  • Recipient Validation Tools: Reduces bounce rates by verifying email addresses before sending.

Omnisend's integration with SMS marketing creates comprehensive campaigns that engage users on multiple platforms. By combining email and SMS, e-commerce businesses can drive significant growth and ensure their messages reach the intended audience.

"Omnisend boosts e-commerce growth by integrating powerful email authentication measures with multi-channel marketing strategies."

Utilize Omnisend to enhance your deliverability while leveraging cutting-edge tools designed for the evolving digital landscape.

6. Folderly

Folderly stands out for its commitment to achieving high inbox placement rates through innovative live scoring mechanisms. By providing real-time feedback on your email campaigns, Folderly ensures that your messages reach their intended recipients rather than getting lost in spam folders.

Key Features:

  • Email Authentication Protocols: Folderly supports SPF, DKIM, and DMARC protocols, vital for improving email deliverability. These protocols authenticate your emails, assuring ISPs of the sender's legitimacy.
  • Domain Sender Score Tracking: Monitoring the health of your domain sender score is crucial. Folderly offers tools to track and enhance this score, ensuring consistent inbox placement.
  • Recipient Validation Tools: Verifying recipient addresses before sending campaigns reduces bounce rates and maintains a clean email list.

Deep Fixes for Deliverability:

Folderly's approach includes deep fixes for common email deliverability issues, addressing root causes rather than surface-level problems. This proactive strategy safeguards your campaigns against future deliverability complications.

"Achieving high inbox placement rates requires more than just basic email sending capabilities; it demands comprehensive tools like Folderly that address all facets of deliverability."

These features collectively make Folderly a robust solution for maintaining an optimal sender reputation and ensuring your emails consistently land in your audience's inboxes.

7. Litmus

Litmus stands out with its powerful design tools and automatic inbox testing capabilities across multiple platforms. Marketers rely on Litmus to ensure their campaigns look impeccable, no matter which email client or device is used. With Litmus, you can preview how your emails appear across different clients like Gmail, Outlook, and Yahoo, making it easier to catch and fix any formatting issues before hitting send.

Key features that enhance deliverability include:

  • Email Authentication Protocols: Supports SPF, DKIM, and DMARC setup to improve sender reputation and inbox placement.
  • Domain Sender Score Tracking: Monitors sender scores to ensure emails are delivered successfully.
  • Recipient Validation Tools: Helps in cleaning email lists to avoid high bounce rates.

Litmus also offers advanced analytics that provide insights into recipient behavior. This data-driven approach allows marketers to refine their strategies based on what works best for their audience. Features like A/B testing further aid in optimizing subject lines, content, and send times for maximum engagement.

"Using Litmus has transformed our email marketing strategy. The ability to see exactly how our emails display across various platforms has significantly reduced our bounce rates." — A satisfied user

By using these tools, marketers can achieve higher deliverability rates and create compelling campaigns tailored for success.

8. Mailtrap

Mailtrap is a powerful tool designed specifically for developers, ensuring that emails are displayed correctly across various clients and devices. This feature is essential for maintaining a professional appearance and providing a consistent user experience.

Key features include:

  • Email Authentication Protocols: Mailtrap supports SPF, DKIM, and DMARC, which are crucial for improving email deliverability. These protocols verify that emails are genuinely from your domain, reducing the chances of being marked as spam.
  • Domain Sender Score Tracking: Monitoring the sender score of your domain helps maintain a reputation that ISPs trust, thus ensuring higher inbox placement rates.
  • Recipient Validation Tools: By validating recipient addresses before sending emails, Mailtrap minimizes bounce rates and enhances deliverability.
"Ensuring emails display correctly across all platforms is non-negotiable for effective digital communication."

Developers can use Mailtrap’s sandbox environment to test email formatting and functionality without the risk of actual delivery. This method allows for thorough debugging and adjustments before any email reaches real recipients. The outcome is polished, error-free emails that meet the expectations of diverse audiences.

Mailtrap's focus on testing before delivery ensures that every aspect of email performance—from layout to authentication—is optimized. This makes it an essential tool for teams committed to delivering flawless email campaigns.

9. MailerLite

MailerLite stands out with its powerful dynamic content creation and testing features, making it a preferred choice for email marketers focused on personalization and engagement.

Dynamic Content Creation/Testing

Create personalized email campaigns that dynamically change content based on recipient data. This ensures each subscriber receives relevant messaging, driving higher engagement rates.

Drag-and-Drop Newsletter Editing

Simplifies the design process with intuitive drag-and-drop tools. Users can easily build visually appealing newsletters without needing extensive design skills.

Email Authentication Protocols

Implementing robust email authentication protocols like SPF, DKIM, and DMARC is crucial for improving deliverability. MailerLite supports these protocols, ensuring your emails are authenticated and trusted by ISPs.

  • SPF (Sender Policy Framework): Validates the sender's IP address to prevent spoofing.
  • DKIM (DomainKeys Identified Mail): Adds a digital signature to your emails, proving their legitimacy.
  • DMARC (Domain-based Message Authentication, Reporting & Conformance): Provides instructions to receiving mail servers on how to handle emails that fail SPF or DKIM checks.

These features collectively enhance deliverability by maintaining a strong sender reputation and ensuring your emails land in the inbox rather than spam folders.

Additionally, MailerLite offers tools for:

  1. Domain Sender Score Tracking: Monitors the reputation of your sending domain to keep it in good standing.
  2. Recipient Validation Tools: Ensures your email list is clean and up-to-date, reducing bounce rates and improving engagement metrics.

By leveraging these capabilities, MailerLite users can achieve superior deliverability rates and effective email marketing campaigns. Furthermore, integrating Sales Enablement Technology into your strategy can streamline the sales process by organizing and managing sales materials efficiently from a central location.

10. Warmup Inbox

Warmup Inbox uses an innovative automated network to significantly improve inbox placement. This advanced network ensures that users' emails bypass spam filters and reach the intended recipients' inboxes.

Key features include:

  • Email Authentication Setup: Supports SPF, DKIM, and DMARC protocols. These authentication methods are crucial for verifying your email's legitimacy, thereby improving deliverability rates.
  • Domain Sender Score Tracking: Monitors your domain's reputation over time. A higher sender score means a better chance of your emails landing in the inbox rather than the spam folder.
  • Recipient Validation Tools: Ensures that your email list is clean and up-to-date by removing invalid addresses. This reduces bounce rates and enhances sender reputation.

A standout feature is the customizable warm-up plans. These plans gradually increase your sending volume, helping to establish a positive sender reputation without triggering spam filters.

To summarize:

  • Automated Network: Enhances inbox placement through intelligent routing.
  • Customizable Warm-Up Plans: Tailored to fit specific needs, ensuring optimal deliverability.
  • Authentication Support: Implements SPF, DKIM, and DMARC for credibility.
  • Domain and Recipient Tools: Tracks sender score and validates recipients to maintain a healthy email list.

Warmup Inbox offers a robust solution for improving email deliverability through strategic automation and rigorous validation processes.

11. Warmy

Warmy redefines email deliverability with its AI-powered assistance that excels in targeted outreach and spam avoidance. Its robust feature set focuses on enhancing both deliverability and user experience, making it an excellent tool for Business-to-Business (B2B) transactions.

Key Features:

  • AI-Driven Capabilities: Warmy's AI algorithms optimize outreach by identifying optimal sending times, crafting personalized content, and avoiding spam triggers.
  • Email Authentication Protocols: Integration of SPF, DKIM, and DMARC protocols ensures emails pass authentication checks, significantly improving deliverability.
  • Performance Monitoring: Real-time tracking of key metrics such as open rates, click-through rates, and bounce rates helps users fine-tune their email strategies.
  • Domain Sender Score Tracking: This tool monitors the sender's reputation, providing insights that help maintain a high sender score.
  • Recipient Validation Tools: Validate email addresses before sending to reduce bounce rates and enhance overall campaign effectiveness.

Warmy combines advanced technology with user-friendly features to help businesses achieve superior inbox placement. Whether through sophisticated AI or comprehensive performance monitoring, Warmy stands out as a top choice for improving email deliverability.

12. Pipl.ai

Pipl.ai stands out with its advanced deliverability controls and humanized AI models. This tool is designed for those looking to master cold outreach with superior personalization techniques, including the use of an AI Sales Script Generator that creates personalized, persuasive sales scripts for emails, video messages, and social media.

Key Features:

  • Email Authentication Protocols: Supports SPF, DKIM, and DMARC ensuring your emails pass authentication checks, crucial for improving deliverability.
  • Domain Sender Score Tracking: Monitors and maintains a high sender reputation, a vital factor in successful email campaigns.
  • Recipient Validation Tools: Ensures your emails are sent to valid addresses, reducing bounce rates and maintaining list hygiene.
  • Cold Outreach Automation: Automates the cold outreach process while maintaining a personalized touch.
  • Predictive Lead Scoring: Utilizes machine learning algorithms to analyze past customer data and current prospects, creating an "ideal customer" profile for better targeting.

These features collectively contribute to higher inbox placement rates and more effective email marketing campaigns.

“Pipl.ai has revolutionized our cold outreach strategy by combining advanced technical controls with AI-driven personalization.” - A satisfied user

With Pipl.ai, you gain the tools needed for both technical excellence and strategic personalization in your email campaigns. The platform even offers features like a Digital Sales Room for secure collaboration between sales reps and buyers throughout the deal cycle.

Ready to elevate your email deliverability? Explore Pipl.ai now.


FAQs (Frequently Asked Questions)

What is email deliverability and why is it important?

Email deliverability refers to the ability of an email to successfully land in the recipient's inbox rather than being filtered into spam. It is crucial in digital marketing as it directly impacts the effectiveness of email campaigns, ensuring that messages reach their intended audience.

What factors can affect email deliverability?

Key factors affecting email deliverability include bounce rates, sender reputation, and the role of spam filters. High bounce rates can damage your sender reputation, while spam filters can prevent your emails from reaching inboxes if they detect issues with your content or sending practices.

What features should I look for in an email deliverability tool?

When choosing an email deliverability tool, look for features such as email authentication support (SPF, DKIM, DMARC), list management tools, real-time monitoring capabilities, and A/B testing functionalities. These features enhance your ability to maintain high deliverability rates and optimize campaign performance.

How does Intuit Mailchimp enhance email deliverability?

Intuit Mailchimp enhances email deliverability by offering robust authentication support, effective list management tools, and A/B testing capabilities. These features help improve sender reputation and ensure that emails are more likely to reach recipients' inboxes.

What is the importance of email authentication protocols like SPF, DKIM, and DMARC?

Email authentication protocols such as SPF, DKIM, and DMARC are essential for improving deliverability. They help verify the authenticity of the sender's domain, thereby reducing the likelihood of emails being marked as spam and enhancing overall trustworthiness with ISPs.

How can I optimize my inbox placement rates?

To optimize inbox placement rates, consider using tools that offer unique features such as warm-up processes for new domains, recipient validation tools, and deep fixes for existing issues. Tools like Folderly provide live scoring and strategies for enhancing deliverability through proactive measures.

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