# Warmy.io

**Source:** https://www.startuphub.ai/startups/warmy-io
**Profile type:** Startup

> AI-driven email deliverability platform to warm up inboxes and increase email reach.

## About

Warmy.io offers an AI-driven, all-in-one platform focused on revolutionizing email deliverability and the email warm-up process. Its core service ensures emails reach the primary inbox by preparing domains and IPs for outreach campaigns, ultimately boosting open and click rates for businesses, marketers, and entrepreneurs. The platform utilizes sophisticated algorithms and Google Postmaster integration to bypass spam filters, build trust, and improve email channel performance.

## Key facts

- **Slug:** warmy-io
- **Website:** https://warmy.io/
- **Founded:** 2021-05-20
- **Employees:** 113
- **Operating status:** Active
- **Sectors / tags:** Email, Automation, Email Deliverability, MarTech, Sales Enablement
- **Social:**
  - LinkedIn: https://www.linkedin.com/company/warmy/
  - Twitter: https://twitter.com/Warmy_io
  - Facebook: https://www.facebook.com/warmy.io

## StartupHub.ai scores

- **Ahrefs DR:** 75/100
- **Agent Readiness:** C (67/100)
- **Site Speed:** 40/100
- **Data Trust:** 84/100

## Tech stack

Detected on warmy.io, last scanned 2026-10-29.

- **Frontend:** Tailwind CSS
- **Analytics:** Google Tag Manager, Segment, Microsoft Clarity
- **Support:** HubSpot
- **CDN:** AWS CloudFront
- **Hosting:** AWS
- **Email provider:** Google Workspace
- **Email marketing:** Customer.io
- **Affiliate program:** FirstPromoter, Self-hosted affiliate

## JSON-LD

Structured data aligned with this page's `<script type="application/ld+json">` (included when the profile is server-rendered).

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## Community reviews

Community reviews below were gathered from public sources into one place. Each quote is copied word for word and links to where it was posted.

- **Reddit r/Coldemailing** | Emotional-Theory1759 | 2026-06-11 | negative | highlighted criticism
  > "Warmy can't keep themselves out of blacklists. They got blocked by Spamhaus -- if they can't keep themselves out of spam, what makes you think they can keep their clients out of it?"
  > Source: https://www.reddit.com/r/Coldemailing/comments/1u30q5m/warmy_cant_keep_themselves_out_of_blacklists/
- **Reddit r/GMail** | TroyHay6677 | 2026-04-13 | negative
  > "My domains are properly warmed up. I don't use bought lists. My DKIM, SPF, and DMARC records are flawless. If you look at Google Postmaster Tools, my sender reputation is sitting at a pristine, glowing 99%. By all traditional metrics, I am the model citizen of the email ecosystem. But for the last three weeks, my open rates have been absolutely cratering."
  > Source: https://www.reddit.com/r/GMail/comments/1sjxobh/gmail_says_my_email_reputation_is_99_but_im_still/
- **Reddit r/ProtonMail** | MaximumMysterious172 | 2026-02-18 | negative
  > "warmy.io seems to confirm my problems and shows that both Outlook and Yahoo 100 % sort my test mail into spam, it also shows that some of the IPs used are blacklisted (screenshots)."
  > Source: https://www.reddit.com/r/ProtonMail/comments/1r8gpfi/emails_domain_set_up_correctly_go_to_spam_outlook/
- **Reddit r/gohighlevel** | Melodic_Intention_52 | 2025-11-19 | mixed
  > "Which platform works better when you’re managing multiple GHL sub-accounts? Any differences in deliverability, warmup quality, or inbox rotation? Is one more reliable at scale especially when juggling multiple domains and client accounts?"
  > Source: https://www.reddit.com/r/gohighlevel/comments/1p0tfy5/instantlyai_or_warmyio/
- **Reddit r/AiAutomations** | Old_Sherbert1433 | 2025-11-01 | mixed
  > "Is Warmy.io actually accurate for testing email deliverability?"
  > Source: https://www.reddit.com/r/AiAutomations/comments/1ololdf/is_warmyio_actually_accurate_for_testing_email/
- **Reddit r/salestechniques** | Old_Sherbert1433 | 2025-11-01 | mixed
  > "I’ve been using Warmy.io , which shows an 88% deliverability score for my domain. My question is — how accurate are these deliverability scores? Are tools like Warmy.io just estimating based on inbox placement in their own test network, or is it a reliable reflection of real-world inboxing (e.g., Gmail/Outlook filtering)?"
  > Source: https://www.reddit.com/r/salestechniques/comments/1olrjum/does_email_deliverability_actually_work/