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Instantly vs Warmy.io

Deliverability Testing Without the Paywall

Run Email Deliverability Tests— Free and Unlimited, Always.

Plus, you gain powerful automation and expert support to not only detect deliverability issues, but actually solve them.

Start your Free Test Now

We’re Focused on One Thing:

Email Deliverability That Works.

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Instantly is a powerful tool for managing cold email campaigns at scale. It offers outreach automation, inbox rotation, and contact management—all very useful for sales teams and lead generation.
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At Warmy.io, our focus is more specific: we help you check and improve your email deliverability, starting with a free inbox placement test you can run in seconds—no sign-up or subscription required.

Why Warmy.io Is The #1 Choice For Email Deliverability

Beyond Testing: A Fully Automated Warm-Up Process
  • GlockApps is a testing tool—it tells you what’s wrong but doesn’t actively improve deliverability.

  • Warmy.io fixes your issues automatically by simulating real email interactions to increase sender reputation.

  • No manual adjustments needed—Warmy.io adapts dynamically to your email provider’s algorithms.
  • Warmy.io uses artificial intelligence to detect and prevent emails from landing in spam.
  • GlockApps provides reports, but Warmy.io actively enhances email performance by warming up your email domains and improving engagement signals.
  • Unlike GlockApps, Warmy.io offers one-on-one consultations with email deliverability experts.
  • Our team proactively monitors your account and guides you on best practices to improve long-term email success.
  • Real human support, tailored to your business needs.
  • GlockApps pricing starts at $59/month, whereas Warmy.io offers more features for just $49/month.
  • With Warmy.io, you don’t need additional tools—it’s an all-in-one email deliverability solution.
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We’re Not Just a Tool—We’re the Leaders in Email Deliverability

Use the Email Spam Tester for free with Warmy.io
  Monitor & optimize your email performance
Get 1-on-1 expert deliverability support

Not Just Customer Service -
A Personalized Expert Consultation

We’re not just another support team. We’re your email deliverability consultants.
When you choose Warmy.io, you get direct, one-on-one guidance from the best experts in the industry.
Always available.
Always personalized.
Tailored solutions to fit your unique email needs.
Proactive monitoring & expert insights — so you’re always ahead.
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Over 7,000 businesses trust Warmy

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Loved by thousands of marketers around the world

Warmy has given us the means we need to make smarter decisions with cold emails and got rid of the stress. With the warmup process making sure that every single one of our emails actually makes it into someone’s inbox. Very efficient and very effective, exactly what we needed.

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Cristina Miller
Director of Content Marketing
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Warmy’s support is fast and helpful. They go above and beyond to assist with any situation. The interface is simple and intuitive. Joining the platform is easy. Also, the AI integration for warmup is revolutionary and saves time.

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Thomas Petersen
Senior Product Manager
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The platform’s warmup processes make sure that our cold emails don’t bounce into spam filters. It also makes use of AI behavior tracking as we’re sending which is great for campaigns scaling. It’s also really valuable to be able to track open rates and responses.

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Allan Black
Senior Affiliate & Strategic Partnerships Manager
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2.3x

Higher open rates

3x

Higher Click Rates

35%

Reduction in Bounce Rates

25-Second Setup Vs Weeks Of frustration
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