I Tried & Tested 10 Deliverability Tools [Updated for 2026]

Inbox placement decides whether an email performed or failed without warning.

Over the past eight years, I worked hands-on with cold email campaigns. Many teams followed best practices, but still saw open rates and replies decline.

They authenticated emails, polished copy, and targeted carefully. Still, messages landed in spam, promotions, or never reached real inboxes.

This pattern showed how deliverability issues stayed unnoticed until results dropped. Most teams noticed the problem only after campaigns started underperforming.

I tested email deliverability tools to understand how inbox placement works. I checked authentication, domain health, and sender reputation across campaigns.

Over time, I evaluated tools that tested placement, tracked sending behavior, and flagged risks. Some tools showed surface-level data, while others prevented long-term issues.

This guide lists 10 email deliverability tools that support steady inbox placement. I grouped them into platforms, testing tools, monitoring tools, and optimization tools.

So, let’s get started.

Top 10 Best Email Deliverability Tools

Here is a quick glimpse of the top email deliverability tools with their best features and pricing details. Check this table to get a quick understanding of each deliverability tool. 

How We Evaluated These Email Deliverability Tools

To provide you with the best email deliverability tools, here’s how I evaluated them.

I used each tool, ran trial email campaigns, and compared real results. I reviewed 15 to 20 tools and picked only those that actually improve deliverability.

Why should you trust this list? Because I’ve tested these tools myself.

Here are the four core factors on which I’ve listed these tools. 

Before we dive into understanding each tool in detail, we must learn the different terms that come with email deliverability.

A Quick Explanation of Common Email Deliverability Features

• Inbox Placement: This feature shows where your emails actually land after sending. It tells you whether emails reach the primary inbox, spam folder, promotions tab, or go missing, helping you understand real inbox placement. Do note that placement tests usually send emails without real engagement. Because of this, actual campaign inboxing rates are often higher once replies and opens start happening naturally.
• Spam Checker: A spam checker analyzes your email content and structure to identify elements that may trigger spam filters. This includes spam-prone words, poor formatting, and HTML issues that can push emails into spam folders.
• Authentication Checker: This feature checks whether your email authentication is set up correctly. It verifies SPF, DKIM, and DMARC records, which help mailbox providers confirm that your emails are legitimate and safe to deliver.
• Reputation Monitoring (IP and Domain): Reputation monitoring tracks the health of your sending IP addresses and domains. It checks for blacklist listings, negative reputation signals, and other risks that can hurt email deliverability.
• Email Validation: Email validation verifies whether email addresses on your list are valid and active. It helps reduce hard bounces caused by invalid emails, which protects your sender reputation over time.

Now, let’s learn about each tool in detail. 

Top 10 Email Deliverability Tools [Discussed in Detail]

Now, let’s learn about each email deliverability tool in detail by discussing its purpose, key features, and pros and cons.

1. Inbox Radar by Saleshandy

Try Inbox Radar by Saleshandy →

Inbox Radar by Saleshandy is one of the most useful tools I’ve added to my deliverability stack.

It shows me exactly where my emails land, either in the inbox, spam, or promotions.

The best part? It’s built inside Saleshandy, so I can test, monitor, and improve email placement without switching tools.

How Inbox Radar by Saleshandy Improves My Email Deliverability

Personally, I run weekly tests when I’m sending campaigns regularly. It helps me catch deliverability issues early, before they hurt my open or reply rates.

Here’s what makes it so useful:

• Inbox placement test: Tells me if my emails land in the inbox, spam, or promotions.
• Spam trigger check: Flags words or formats that might send my emails to spam.
• DNS and blacklist alerts: If something’s off with SPF, DKIM, or DMARC, or if my domain is blacklisted, it tells me right away.
• Recurring testing: I can run tests automatically every few days, so I don’t have to check manually.
• Real-time fixes: Since it’s built into Saleshandy, I can spot deliverability issues and fix them before a campaign goes live.

If you ask me the best way to stay on top of deliverability issues, I’d say go with Inbox Radar. Let’s now learn about the key features. 

Key Features of Inbox Radar by Saleshandy

• Inbox placement testing: Shows exactly where your emails land, inbox, spam, or promotions, across Gmail, Outlook, Yahoo, Zoho, and more.
• Automated recurring tests: Schedule tests daily, weekly, or monthly to continuously monitor deliverability without manual effort.
• Spam trigger detection: Spots risky words, formatting, and other elements that may cause your emails to land in spam.
• SpamAssassin scoring: Gives you a clear score and color-coded results to understand how spam filters view your email.
• DNS and authentication checks: Alerts you about issues with SPF, DKIM, DMARC, and other technical setups that impact inboxing.
• Visual reports: Get easy-to-read and detailed insights that show issues for quick troubleshooting. 
• Shareable test results: Generate public links for your reports so you can easily share them with your team or clients.

Pricing  (Billed Annually)

• Inbox Starter: $23/month
• Inbox Pro: $79/month

What Do Users Say About Inbox Radar by Saleshandy?

Read this complete guide on email deliverability to understand each and every aspect of it. It covers end-to-end topics on email deliverability.

2. TrulyInbox

Try TrulyInbox →

TrulyInbox is one of the few tools I actually trust for email warm‑up and improving deliverability.

It does one thing, which is helping your emails land in inboxes.

You don’t pay for extras you’ll never use,  just the features that actually boost deliverability and sender reputation.

What do I love most? I can warm up unlimited email accounts without paying more. That alone makes it a go-to email deliverability tool for my team.

How TrulyInbox Improves Your Email Deliverability

TrulyInbox does one job, and does it better than most.

• Real human-like activity: It opens emails, replies, stars them, and makes the engagement look natural to Gmail, Outlook, and other ESPs.
• Gradual ramp-up: It starts slow and increases email volume at a healthy pace,  just like a real person would.
• Auto-stop feature: If something’s off (like a broken SPF, DKIM, or DMARC), it stops the warm-up to protect my domain.
• Consistent daily reports: I could see exactly how many emails landed in the inbox vs. spam.
• Works across platforms: Whether I used Gmail, Zoho, or a custom SMTP, TrulyInbox kept deliverability steady.

All of this helped me build a sender reputation from scratch.

On top of that, the setup was quick, and the clean interface made everything easy to use.

If someone asks me why I recommend TrulyInbox, it’s simple. The reason is that it helps your emails land in inboxes without making things complicated.

Let me now explain its unique and key features. 

Key Features of TrulyInbox

• Custom warm-up control: You choose how many emails to send per day, how fast to ramp up, and the reply rate.
• Unlimited inbox warm-up: Add and warm up as many email accounts as you want, no extra cost per inbox.
• Human-like engagement: Sends real-looking emails, opens them, replies, stars, and marks as important.
• Auto-stop safety check: If your SPF, DKIM, or DMARC is broken or missing, TrulyInbox pauses the warm-up immediately to protect your sender reputation.
• Inbox vs. Spam reporting: Daily reports show exactly where your warm-up emails are landing (inbox, spam, or promotions).
• ESP compatibility: Works with Gmail, Outlook, Zoho, Saleshandy, custom SMTPs, and more.
• Built-in Saleshandy integration: You don’t have to switch tools; as TrulyInbox works directly with your Saleshandy cold email setup.

Pricing

The coolest part about TrulyInbox is its 7-day free trial to test all features. Also, TrulyInbox has transparent pricing (unlike some warm-up tools):

• Starter Plan: $22/month, unlimited accounts, 100 warm-up emails/day
• Growth Plan: $59/month, unlimited accounts, 1,000 warm-up emails/day
• Scale Plan: $142/month, unlimited accounts, 2,500 warm-up emails/day
• Business Plan: $217/month, unlimited accounts, 5,625 warm-up emails/day

What Do Users Say About TrulyInbox?

Check out the Trulyinbox review for 2026.

3. GlockApps

Try GlockApps →

If you need email performance and deliverability insights, you’ve probably heard of GlockApps. 

Overall, I would say it is an email deliverability platform that comes with a suite of tools to test, monitor, and improve email deliverability. 

Unlike other email deliverability tools,  GlockApps offers features that are above technical authenticity. 

So, if you want to know how to go beyond technical authentication, GlockApps helps you with inbox placement monitoring. 

How GlockApps Improves My Email Deliverability

GlockApps offers blacklist monitoring, DMARC analytics, and even seeding testing. (And I tested that too!)

I ran an email campaign manually with their seed list (which is basically a list of emails managed by Outlook, Gmail, and Yahoo) to know where your emails are landing: inbox, spam, or promotional tab. 

What’s more? I can even check my content for spam triggers, like sketchy words or broken HTML code, to get instant ideas and actionable tweaks that help.

As said in the first line itself, GlockApps is all about optimizing email campaigns, which includes inbox placement and content analysis to get a clear picture of how your email would look and how to avoid the spam folder. 

Here is a quick features overview of GlockApps. 

Key Features of GlockApps

• Test inbox placement: Send emails to a seed list of 70+ accounts across major ISPs (Gmail, Outlook, Yahoo) to see where they land (inbox, spam, promotions).  
• Analyze spam triggers: Run content scans using SpamAssassin rules to pinpoint spammy elements and get actionable fix suggestions.
• Monitor blacklists: Check your IP and domain against 50+ blocklists with real-time alerts if you’re listed.
• Audit technical authentication: Verify SPF, DKIM, and DMARC setup with detailed reports to ensure compliance and improve deliverability.  

Pricing

• Free plan
• Essential: $59/month
• Growth: $99/month
• Enterprise: $129/month

What Do Users Say About GlockApps?

Also Read: Top GlockApps Alternatives

4. MxToolbox

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MxToolbox is a tool that helps analyze, monitor, and inspect your email server’s health. 

Whether you are a marketer, IT admin, or security professional, MxToolbox is a go-to tool for managing email deliverability, DNS configurations, and backlist monitoring.

How is MxToolbox helpful for marketers and sales professionals like me in cold emailing? 

It helps with: 

• Improving the email deliverability of your email domains by ensuring proper authentication (SPK, DMARC, DKIM)
• Preventing emails from landing in spam by checking backlists
• Diagnose bounced emails and server configurations

From a technical perspective, if you ask me, MxToolbox is a reliable and trustworthy platform that helps you to know what’s technically wrong in your email accounts.

How MxToolbox Improves My Email Deliverability

If your technical setup is wrong, no matter your email copy, email list, or sender reputation, your emails are likely to land in spam if you don’t follow all compliance and legal policies.

The worst part? Your IPs could get backlisted if you keep sending emails without fixing technical records.

What was the best part that I liked? You don’t need to install any software on your device.

However, it only has free tools that help you to know MX lookup, backlists, DMARC, email health, DNS lookup, and diagnostics, as well as analyze headers.

To access advanced features like inbox placement analysis and email configuration analysis, you’ll need a paid MxToolbox plan.

Here is a quick overview of all the key features of MxToolbox that you must know.

Key Features of MxToolbox

• SPF, DKIM, and DMARC lookup: Instantly check if authentication records are correctly configured.
• Blacklist monitoring: Detect if your domain or IP is blacklisted and get guidance on removal.
• SMTP diagnostics: Analyze email server health to troubleshoot delivery issues.
• DNS & MX record checks: Verify that your domain’s email setup is optimized for deliverability.
• DMARC reporting: Get insights into how ISPs treat your emails and identify potential threats.

Pricing

• Free plan
• Delivery Center: $129/month
• Delivery Center Plus: $399/month

What Do Users Have to Say About MxToolbox?

Not sure about it? Please read here MxToolbox Alternatives to find the best for your requirements.

5. Folderly

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What’s most disappointing in cold email marketing campaigns? Not able to land in the inbox. Right?

Folderly helps to solve this issue. As you know, landing in spam instead of the inbox makes all your efforts in vain.

Even if you’re sending relevant and properly written emails, they won’t work if they don’t reach your audience’s inbox.

Folderly helps you improve inbox placement by identifying and fixing deliverability issues that you face.

How Folderly Improves My Email Deliverability

When I used Folderly, its spam testing and email warm-up features were useful.

The spam test showed where my emails are landing, whether in the primary inbox, promotions, or spam.

It also flags potential issues, like poor domain reputation. The email warm-up feature then helped gradually improve my sender reputation, so more emails reached the inbox on time.

Here are the key features of Folderly.

Key Features of Folderly

• Inbox placement monitoring: Track where your emails land, whether in the inbox, spam, or promotional tabs, to detect and resolve core issues.
• Real-time spam alerts: Get instant notifications via email, Slack, SMS, or other channels when your emails are flagged as spam.
• Spam trigger analysis: Identify specific factors causing your emails to be marked as spam by different ESPs.
• Domain and mailbox health monitoring: Check your mailbox and domain reputation, check blacklist status, and verify DNS settings to maintain a strong sender reputation.

Pricing

• Folderly pricing: $96/month/annually

What Do Users Say About Folderly?

6. Everest by Validity

Try Everest by Validity →

Everest is an email deliverability platform by Validity that helps ensure your emails reach inboxes, not spam.

It combines tools for monitoring sender reputation, testing inbox placement, and analyzing campaign performance.

One of the interesting things about this tool is that it was built from Validity’s acquisitions of Return Path, 250ok, and BriteVerify.

How Everest by Validity Improves My Email Deliverability

Everest tracks where your emails land (inbox, spam, or promotions) using a global seed list covering 100+ mailbox providers.

It monitors sender reputation via Sender Score, blacklist status, and spam trap hits, alerting you to issues in real time. Users report inbox placement rates climbing from 80% to 95%+ after fixes based on its data.

It supports DMARC, DKIM, and SPF setup to pass authentication checks, which is critical for avoiding spam filters.

An interesting feature: Inbox placement testing shows detailed breakdowns by ISP (Gmail, Outlook), region, and mailbox type.

Compared to Postmark’s transactional focus, Everest offers broader campaign insights, including competitor benchmarking (send volumes, subject lines).

What’s its downside? It’s complex to set up, taking up to 30-60 minutes with DNS tweaks, and it isn’t cheap. It’s also overkill for small-scale senders.

Let’s now learn the features that Everest by Validity offers.

Key Features of Everest by Validity

• Track inbox placement: Test emails against a massive seed list (100+ providers) to measure inbox, spam, or promotions delivery.
• Monitor sender reputation: Check Sender Score, blacklist status, and spam trap hits with real-time updates and alerts.
• Analyze competitors: Compare your email metrics (volume, subject lines) to industry peers for strategic insights.
• Validate email lists: Use BriteVerify integration to clean invalid addresses before sending, boosting deliverability.

Pricing

• Elements: $15,000/annually
• Professional: custom pricing
• Enterprise: custom pricing

What Do Users Say About Everest?

7. Google Postmaster Tools

Try Google Postmaster Tools →

Google Postmaster Tools is a simple platform that helps you understand email performance.

It helps bulk email senders troubleshoot email delivery issues and understand how Gmail handles their email campaigns, whether about cold emailing or email marketing. 

The Google Postmaster Tool lets you know about spam rate, IP, and domain reputation, and message authentication like SPF, DKIM, and DMARC records. 

What’s the process for accessing the Google Postmaster Tool? 

You need to have a Google account or a Google Workspace account to access it. (It’s that easy!)

How Google Postmaster Improves My Email Deliverability

With your Gmail account, log in to Postmaster Tool by creating a new Gmail account, which can be easily shared among multiple users (who are in your team, whether marketing or sales professionals)

After getting started, add your domain and select Next, and it’s time to verify the ownership of your domain. Now, you can access the DNS record and add the TXT record provided by Google. 

Once done, go back to Google Postmaster and select Verify. 

If the TXT record isn’t found, you need to verify whether the TXT record was added properly or not. If you encounter a problem with the TXT record, then you can verify it using another method, which is CNAME. 

Overall, if you ask me, the Google Postmaster Tool helps analyze email performance, identify and resolve email deliverability issues, troubleshoot complaints, and improve reputation. 

Here is a quick features overview of the Google Postmaster Tool.

Key Features of Google Postmaster Tool

• Monitor Gmail performance: Track your domain’s spam rate, IP reputation, and delivery errors for Gmail recipients.
• Check authentication status: Verify SPF, DKIM, and DMARC alignment to ensure Gmail trusts your emails.
• Analyze user feedback: See spam complaint rates from Gmail users to adjust content or list hygiene.
• Set up with DNS: Add a TXT record to your domain to start collecting free Gmail-specific deliverability data.

Pricing

• Free to use

8. Postmark

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Postmark is an email delivery service that allows you to send transaction emails like password resets, order confirmations, or welcome messages fast and via reliable SMTP or API. 

You might think, Why Postmark here? 

Postmark delivers email in seconds; yes, it is damn faster than Mailgun or SendGrid. 

I’ve tested it, and my order confirmations went from a 5 to 20 second delay to under 1 second. 

The point here is to use Postmark to keep your transaction emails separate from your marketing emails or different streams. 

So, your important emails are safe (always), and most importantly, they land in the inbox instead of spam. 

How Postmark Improves My Email Deliverability

If your app or site depends on emails hitting inboxes instantly, Postmark’s speed and reliability save you from angry customers and lost sales. 

With Postmark, you get 45 days of email history (content, events, and stats) included in all plans, which is rare. On the other hand, SendGrid, for example, charges extra beyond 7 days.

This helps you track bounces or spam reports and fix issues like bad recipient lists. Their bounce API and webhooks give real-time failure alerts (like 550 Mailbox unavailable) so you can act fast.

What I love about Postmark is its setup and user experience. With its setup tutorial and documentation, I started running it in 10 to 20 minutes.

Key Features of Postmark

• Deliver emails fast: Send transactional emails (receipts, alerts) via API or SMTP with sub-2-second delivery to inboxes.
• Track delivery outcomes: Access 45 days of logs (bounces, opens, clicks) to troubleshoot issues without extra cost.
• Secure with authentication: Set up DMARC, DKIM, and SPF automatically to pass spam filters and hit inboxes.
• Get bounce alerts: Receive real-time webhook notifications for hard or soft bounces to refine your recipient list.

Pricing

• Free trial
• Basic: $15/month
• Pro: $16.50/month
• Platform: $18/month

What Do Users Say About Postmark?

9. InboxAlly

Try InboxAlly →

InboxAlly is an email deliverability tool that helps your emails land in the inbox instead of spam. It warms up your email setup and improves your sender reputation so that more people (your prospects) see your messages. 

InboxAlly tricks email providers (like Gmail) into trusting you by moving emails out of spam, making them land in your inbox, and even without clicking links. 

If you’re already using a cold email tool but struggling with spam, this tool pairs up perfectly to improve your deliverability rate. 

How InboxAlly Improves My Email Deliverability

One of its useful features is that it tracks where your emails land (inbox, spam, or promotions) in real time. Most tools available in the market don’t do that so clearly. 

Drawback? It’s not affordable, and setup is a bit technical and takes up to 20 minutes to connect your email system. 

Let me now draw your attention to its powerful features that could save your life (of course, your money too!)

Key features of InboxAlly

• Warm up domains/IPs: Improve engagement (opens, replies) with seed emails to train providers like Gmail to prioritize your messages.
• Monitor placement live: Watch real-time stats on where emails land (inbox, spam, promotions) as your reputation improves via a progress dashboard.
• Repair sender reputation: Use preset profiles (Reputation Repair) to fix damaged domains or IPs, which allows you to move emails out of spam over weeks.
• Customize engagement: Adjust warm-up settings (100 daily actions for $149/month) to match your sending volume and goals.

Pricing

• Starter: $149/month
• Plus: $645/month
• Premium: $1,190/month
• Enterprise: custom pricing

What Do Users Have to Say About InboxAlly?

10. Mailtrap

Try Mailtrap →

Mailtrap is an email deliverability platform built mainly for product and developer teams. I see it working best when companies send high volumes of transactional or product emails.

Unlike warm-up or testing-only tools, Mailtrap handles sending, monitoring, and analysis. It supports both SMTP and API-based sending without heavy setup or maintenance work.

Mailtrap also works well during development and staging environments. Teams can test emails safely before sending anything to real users.

How Mailtrap Improves Email Deliverability

Mailtrap focuses on controlled sending and visibility across mailbox providers. It helps teams understand how emails perform after they leave the server.

Here’s where it adds value:

• High inbox placement: Mailtrap maintains stable inbox rates across Gmail, Outlook, and Yahoo.
• Mailbox-level analytics: I can see opens, clicks, bounces, and spam complaints per provider.
• Dedicated bulk stream: Marketing and transactional emails stay separate without harming reputation.
• Email logs: I can trace delivery issues using detailed logs instead of guessing.
• Expert support: Deliverability experts help review sender setup and Postmaster data.

Mailtrap suits teams that want fewer surprises at scale.

Key Features of Mailtrap

• Email API and SMTP relay: Send transactional and promotional emails reliably.
• Inbox placement stability: Designed to maintain inboxing across plans and volumes.
• Advanced analytics dashboards: Track deliverability, opens, clicks, bounces, and complaints.
• Auto warm-up: Gradually ramps up sending volume on new IPs.
• Email logs: Access up to 30 days of logs for debugging delivery issues.

What Do Users Have to Say About Mailtrap?

Pick the Best Email Deliverability Tool, Leave the Rest!

You’ve now seen a few great email deliverability tools and how each one helps improve your inbox placement.

There’s a lot to choose from, better pricing, easier setup, real human-like warm-ups, and accurate inbox placement tests.

Still not sure which one to start with?

Here’s what I recommend:

➜ Try Inbox Radar by Saleshandy (you get 2 free tests to try it out!)

Check it out and see how it compares to others, and how it can help your emails land where they should: the inbox.

FAQs About Email Deliverability Tools

1. What is the difference between email delivery and email deliverability?

Email delivery means your email reaches the recipient’s mail server and doesn’t bounce. Deliverability is whether the email lands in the inbox, spam, or other folders. Even if an email is delivered, poor deliverability means it may never be seen.

2. How do email providers decide whether to send an email to spam?

Email providers look at sender reputation, authentication (SPF, DKIM, DMARC), spam complaints, content, and user engagement (opens, clicks, replies). If your emails are frequently ignored, reported as spam, or have missing authentication, they’re more likely to land in spam.

3. Do I need multiple tools, or is there an all-in-one solution?

It depends on your needs:

• For authentication checks: MxToolbox
• For warmup, spam testing, and inbox placement: TrulyInbox
• For sender reputation improvement: InboxAlly
• For an all-in-one solution: Everest by Validity (includes monitoring, analytics, spam testing, and reputation tracking, but it is costly).

4. How do I check my SPF, DKIM, and DMARC records?

Use tools like MxToolbox, GlockApps, or Google Postmaster Tools.

• SPF ensures only authorized servers send emails from your domain.
• DKIM signs emails to prevent tampering.
• DMARC monitors SPF/DKIM alignment and tells email providers how to handle failures.

5. How do I know if my domain or IP is blacklisted?

Use MxToolbox or GlockApps to check if your domain or IP is blacklisted. If it is, request removal from the blacklist provider and improve email practices to avoid spam traps, authenticate emails, and reduce complaints by sending relevant emails to engaged users.

6. How can I fix authentication issues affecting my email deliverability?

You can check the SPF, DKIM, and DMARC setups using MxToolbox or Google Postmaster Tools. Make sure SPF includes all authorized senders and doesn’t exceed lookup limits. Enable DKIM signing so recipients can verify your emails. Configure DMARC to monitor and enforce authentication policies to protect against spoofing and phishing.