Top 7 Email Deliverability Tools in 2025

Sending out emails is simple. Making sure those emails end up in your recipient’s inbox? That’s a whole new ball game. Poor email deliverability can quietly derail your cold outreach campaigns, leading to lost time, effort, and missed business opportunities. Thankfully, email deliverability tools are here to save the day.

These tools not only keep your emails out of spam folders but also optimize your sender reputation, ensure impeccable delivery, and increase your chances of closing deals.

Here’s a comprehensive guide to the top email deliverability tools in 2025 that are reshaping the way businesses run cold email campaigns.

What’s Email Deliverability?

Before we jump into the tools, let's wrap our heads around what email deliverability is. Simply put, email deliverability is the ability of your email to successfully land in a recipient's inbox, instead of getting trapped in spam or junk folders. Think of it as your email's VIP pass to your prospect’s attention.

A good deliverability score signals to email service providers (like Gmail or Outlook) that you’re sending valuable, credible content, giving you prime placement in inboxes. Without optimized deliverability, even the best email campaigns can fall flat.

Benefits of Email Deliverability

Why does email deliverability matter? Here are some of the undeniable benefits:

• Reach Your Target Audience: Ensure your emails reach your prospects’ inboxes, not spam folders, increasing the chances of engagement. 

• Boost Campaign ROI: Better deliverability = higher open rates. Higher open rates = better lead conversion. It’s that simple. 

• Maintain Your Reputation: Avoid getting blacklisted by preserving your sender score and domain authority. 

• Maximize Efficiency: With tools optimizing your sender reputation, you can scale your email campaigns without compromising quality. 

Now that we understand the why, it’s time to crack open the tools that can help you achieve superior email deliverability in 2025.

Top 7 Email Deliverability Tools in 2025

1. Instantly

What it does: 

Instantly connects your email accounts and provides an all-in-one deliverability booster to keep your campaigns on track. It gradually warms up your email accounts (just like stretching before a sprint) and uses a deliverability dashboard to keep tabs on open rates, clicks, and spam triggers. 

Best for: Small businesses and sales teams looking for a plug-and-play solution that’s budget-friendly. 

Why it’s great: 

• Easy setup with one-click activation. 

• Tracks deliverability metrics to pinpoint problem areas. 

• Costs start at $30 per month.

Trust us, the name says it all.

2. Smartlead

What it does: 

Smartlead makes your cold outreach feel more human with its auto-rotation of email accounts and smart replies. This prevents service providers from flagging your emails as spam. Bonus points if you love real-time analytics to track your campaign performance. 

Best for: Teams managing large-scale cold email campaigns across multiple accounts. 

Why it’s great: 

• AI-powered email warmup. 

• Dynamic ESP (email service provider) matching for better inbox rates. 

• Starts at $39/month with a 14-day free trial. 

Think of it as your email campaign’s best-kept secret.

3. Lemlist

What it does: 

Beyond just email deliverability, Lemlist adds personalization to your emails to create unique customer journeys. Its Lemwarm feature prevents blacklists by gradually warming up your accounts before you go full throttle. 

Best for: Marketers and sales teams hungry for engagement and replies. 

Why it’s great: 

• Delivers a deliverability score to gauge success. 

• Smart notifications alert you to spam triggers. 

• Paid plans start at $69/month. 

Pro tip: Lemlist integrates seamlessly with CRMs, making it a favorite among sales professionals.

4. Unify

What it does: 

Unify is a powerhouse for maintaining a strong sender reputation while managing multiple campaigns. It’s designed to eliminate email bounces and make mailbox setup easy, even for non-techies. 

Best for: High-volume senders willing to invest in performance. 

Why it’s great: 

• Smart sending limits ensure credibility. 

• Seamless integration with platforms like HubSpot and Salesforce. 

• Plans start at $1,000/month. 

Yes, it’s premium, but it’s worth every penny.

5. Folderly

What it does: 

Folderly is laser-focused on email deliverability. From spam-checking your content to analyzing your domain health, Folderly ensures your emails look and act squeaky clean. 

Best for: Businesses that need a dedicated email deliverability expert in their arsenal. 

Why it’s great: 

• Daily alerts for spam-triggering words. 

• Advanced diagnostics to iron out domain issues. 

• Pricing starts at $96/month. 

Think of Folderly as the Sherlock Holmes of email problems.

6. Zerobounce

What it does: 

Zerobounce blends deliverability with validation, ensuring every email you send is legit and valuable. It spots invalid email addresses and alerts you to any sender reputation issues before you hit “send.” 

Best for: Large teams looking for an all-in-one toolkit. 

Why it’s great: 

• Blacklist and DMARC monitors. 

• Inbox placement tests for over 20 service providers. 

• Subscription plans begin at $49/month. 

It’s like putting your email campaigns in the hands of an expert mechanic.

7. Pipl

What it does: 

Pipl offers a no-frills way to warm up your email domain before sending. It ensures gradual, natural sending patterns while monitoring deliverability metrics across various provider platforms. 

Best for: Startups prioritizing affordability but still wanting reliable performance. 

Why it’s great: 

• Supports multiple providers effortlessly. 

• Pricing to be determined based on plan needs. 

Simple, effective, and beginner-friendly.

Key Factors to Consider When Choosing an Email Deliverability Tool

Not all tools are created equal. Here are a few factors to evaluate before committing:

• Ease of Use: Does it have an intuitive interface?  

• Integration: Can it work with your existing email/CRM setup? 

• Scalability: Will it grow with your business needs? 

• Support: Does it offer 24/7 assistance or resolution channels? 

• Price: Is it budget-friendly while delivering great ROI? 

Pick a tool that checks all the boxes for your business goals.

Crush Email Deliverability with Endy Media

While these tools are stellar at what they do, the hard truth is that no software can work wonders without proper implementation. This is where Endy Media steps in. Our experts tailor strategies specific to your business needs, ensuring your email marketing efforts go above and beyond. 

• 24/7 Support 

• Proven results 

• Seamless implementation 

Stop guessing. Start sending smarter. Contact Endy Media today to dominate inboxes.