Warmy review

AI-driven email warm-up and deliverability platform for marketers and sales teams sending cold or bulk email.

By Noahlast updated October 24, 2026pricing verified September 23, 2026

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Warmy in 20 seconds

Best for: Cold email and marketing teams warming up a new sending domain or recovering from a spam-folder reputation problem.

Pricing: Warmy uses volume-based pricing that is not published on the site; a 7-day free trial with no credit card is available, and paid plans require a demo or signup to see exact costs.

Warmy warms up sending domains and IPs using a network of over 1 million real mailboxes.
Warmy includes a 500,000+ mailbox US seed list that rotates automatically every month.
Warmy's pricing is volume-based and not published publicly; buyers must book a demo or start the trial to see plan costs.
Warmy offers a 7-day free trial with no credit card required.
Warmy integrates with 70+ B2B tools (Outreach, ZoomInfo, Apollo.io) and 140+ B2C ESPs (Mailchimp, HubSpot, Shopify, Klaviyo).
Warmy has been used by more than 7,000 businesses according to the vendor's pricing page.

Limitations: No public price list, which complicates upfront cost comparison against competitors.; No permanent free plan, only a time-limited trial.; Web-only dashboard with no native mobile apps.; Volume-based billing means costs scale with sending volume rather than a flat per-seat fee.

Top alternatives: Mailreach, Mailwarm, Warmup Inbox, Lemwarm, Folderly, Instantly — full list

What is Warmy?

Warmy is a SaaS tool that improves email deliverability by automatically warming up sending domains and IPs, testing inbox placement, and flagging DNS or reputation problems before a sender's real campaigns go out. It is used by marketers, sales development teams, agencies, and e-commerce brands that send cold outreach or high-volume marketing email and need messages to land in the primary inbox instead of spam.

Warmy is an email deliverability platform that warms up domains and IPs by exchanging test emails with a network of over 1 million real mailboxes, then monitors reputation, DNS records, and inbox placement over time. It combines an AI co-pilot (called Adeline), a 500,000+ mailbox US seed list, Google Postmaster integration, DMARC/SPF monitoring, and an email verification tool in one subscription. It targets B2B senders using Google Workspace and Microsoft 365 and B2C senders sending through consumer providers like Gmail, Yahoo, and Outlook, and connects to ESPs such as Klaviyo, HubSpot, SendGrid, Mailgun, and Amazon SES via API or native integrations.

Standout feature: A 500,000+ real US mailbox seed list combined with an AI co-pilot (Adeline) that reads DNS, warm-up, and Google Postmaster data and tells the sender exactly what to fix.

Biggest weakness: Pricing is not published on the site; it is volume-based and only disclosed after booking a demo or starting the 7-day trial, which makes it hard to compare costs against competitors upfront.

Warmy: pros and cons

Pros

Warm-up network of over 1 million real mailboxes across Google Workspace, Microsoft 365, and consumer providers
Bundles warm-up, email verification, DMARC/SPF monitoring, reputation tracking, and a template spam-score optimizer in one subscription instead of separate tools
Works with more than 70 ESPs and outreach platforms including Klaviyo, HubSpot, SendGrid, Mailgun, and Amazon SES, plus a documented API and n8n/Zapier automation
Every plan includes a named deliverability expert and 24/7 human support rather than ticket-only support

Cons

No published price list; buyers must talk to sales or start a trial to learn actual costs
No permanent free tier, only a 7-day free trial
Volume-based pricing model makes month-to-month cost forecasting harder than flat per-seat pricing
No native mobile apps; it is a web dashboard only

Warmy pricing

Custom pricing · verified September 23, 2026 from the vendor's pricing page

Plan	Price	Notes
B2B / B2C plans	Custom	Volume-based pricing billed on the number of warm-up emails generated and interacted with; exact tier prices are not published and require signing up or booking a demo.
Custom plan	Custom	Custom deliverability program sized to a sender's volume, ESPs, and goals, arranged with a Warmy deliverability expert.

What reviewers say

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