# Warmerly

> Warmerly is automated email warmup software for cold outreach. It builds real sender reputation across Gmail and Outlook mailboxes so cold email lands in the inbox instead of the spam folder.

Warmerly runs continuous, human-like warmup conversations between your mailboxes and an aged peer pool, monitors inbox placement against seed accounts, automatically rescues messages from spam, and reports a health score per mailbox. It is warmup-only (no campaign sender) and integrates with whatever outreach tool you already use. Built for SDRs, agencies, and outbound teams. Pricing starts at GBP 9/month with unlimited mailboxes on every plan.

## What is email warmup?

Email warmup is the process of gradually sending and engaging with mail from a new or low-volume sending mailbox so that providers like Gmail and Outlook learn to treat it as a trusted human sender. A warmup tool such as Warmerly connects to your mailbox via OAuth and runs continuous, human-like conversations (sends, replies with quoted history, stars, label, mark important, and spam-folder rescue) against an aged peer pool, building the baseline reputation a mailbox needs before any cold outreach is sent.

## Product
- [Home](https://warmerly.com/): What Warmerly does, who it is for, and how it lands you in the inbox.
- [Features](https://warmerly.com/features): Pool-based warmup, inbox-placement monitoring, spam rescue, health scoring, ramp schedules.
- [How it works](https://warmerly.com/how-it-works): The warmup model: peer pool, human-like sends and replies, daily ramp, and placement tests.
- [Pricing](https://warmerly.com/pricing): Plans: Solo GBP 9, Growth GBP 19, Agency GBP 39 — all with unlimited mailboxes.
- [Deliverability guide](https://warmerly.com/deliverability-guide): A practical guide to cold-email deliverability: authentication, warmup, list hygiene, and monitoring.
- [Glossary](https://warmerly.com/glossary): Plain-English definitions for every term in email warmup, deliverability, and cold outreach.

## Comparisons
- [Warmerly vs Instantly.ai](https://warmerly.com/compare/instantly): An honest comparison of Warmerly and Instantly.ai for email warmup in 2026. Pricing, peer network, spam recovery, feature coverage, and the trade-offs.
- [Warmerly vs Smartlead](https://warmerly.com/compare/smartlead): A side-by-side comparison of Warmerly and Smartlead for email warmup. Pricing, network quality, features, integrations, and the use cases each one wins.
- [Warmerly vs Mailwarm](https://warmerly.com/compare/mailwarm): Both Warmerly and Mailwarm are warmup-only tools. Here is how they compare on price, peer network, features, and modern signals like spam recovery.
- [Warmerly vs Mailreach](https://warmerly.com/compare/mailreach): An honest comparison of Warmerly and Mailreach for email warmup. Pricing model, peer network quality, spam recovery, and which tool fits your setup.
- [Warmerly vs Warmbox](https://warmerly.com/compare/warmbox): Warmerly vs Warmbox: an honest side-by-side on pricing, peer network, spam recovery, auth monitoring, and which tool makes more sense at scale.
- [Warmerly vs Folderly](https://warmerly.com/compare/folderly): An honest comparison of Warmerly and Folderly. Pricing, warmup quality, spam testing, content audits, and which tool fits your deliverability needs.
- [Warmerly vs Lemwarm](https://warmerly.com/compare/lemwarm): Compare Warmerly and Lemwarm on price, peer network, spam recovery, and feature coverage. The honest case for switching.
- [Warmerly vs Mystrika](https://warmerly.com/compare/mystrika): An honest comparison of Warmerly and Mystrika for email warmup. Pricing, network quality, spam recovery, auth monitoring, and which tool fits your workflow.

## Guides & articles
- [Email Warmup Explained: What It Is, Why You Need It, and How It Actually Works in 2026](https://warmerly.com/blog/email-warmup-explained): A complete plain-English guide to email warmup for cold outreach. Learn what warmup is, why Gmail and Outlook care, the signals that move the needle, and how long it takes to warm a mailbox in 2026.
- [How to Get Out of Gmail's Spam Folder (and Stay Out) in 2026](https://warmerly.com/blog/how-to-fix-gmail-spam-folder): If your cold email is landing in Gmail's spam folder, here is exactly what to fix, in order. Authentication, content, ramp, warmup, complaints, and the postmaster tools that actually matter.
- [Instantly vs Smartlead vs Warmerly: Which Email Warmup Tool Is Right in 2026](https://warmerly.com/blog/instantly-vs-smartlead-vs-warmerly): An honest comparison of the three most-asked-about email warmup tools in 2026. Pricing, peer network quality, spam recovery, feature gaps, and the trade-offs nobody else is willing to write about.
- [SPF, DKIM, and DMARC for Cold Email: The Minimum You Must Configure in 2026](https://warmerly.com/blog/spf-dkim-dmarc-cold-email): Step-by-step instructions for configuring SPF, DKIM, and DMARC for a cold-outreach domain in 2026. Includes example DNS records, common mistakes, and how to verify everything is working.
- [How to Warm Up a New Email Domain Without Getting Flagged](https://warmerly.com/blog/warm-up-new-email-domain-without-getting-flagged): A practical guide to warming a brand new sending domain in 2026: authentication checklist, realistic ramp curves, the signals receivers track, and the early warnings that mean you should slow down.
- [Gmail vs Outlook: Why Your Cold Email Lands in Spam and How to Fix It](https://warmerly.com/blog/gmail-vs-outlook-cold-email-spam): Gmail and Outlook filter cold email very differently. Here is what each provider actually checks, how to read Postmaster Tools and SNDS, and what to change when one inboxes but the other does not.
- [SPF, DKIM, DMARC: The Deliverability Stack Explained for Outbound Teams](https://warmerly.com/blog/spf-dkim-dmarc-deliverability-stack-outbound): A practical walkthrough of the three core authentication standards, alignment modes, common configuration mistakes, and how to read DMARC aggregate (RUA) and forensic (RUF) reports.
- [The Honest Math of Email Warmup: How Long Should It Actually Take?](https://warmerly.com/blog/honest-math-of-email-warmup-duration): Domain age, target volume, recipient mix, and provider reputation all change the warmup clock. Here are the realistic curves and the indicators that say a mailbox is genuinely ready.
- [Outlook Emails Going to Junk: How to Fix It](https://warmerly.com/blog/outlook-emails-going-to-junk): Your emails are landing in Outlook's junk folder. Here is what to check and fix, in order: authentication, IP reputation, blocklists, content, and send volume.
- [Why Your Reply Rate Is Lying to You About Deliverability](https://warmerly.com/blog/reply-rate-lying-about-deliverability): Open and reply rates feel like deliverability data, but they only measure what your engaged subset did. Here is how to use seed inbox testing and inbox placement to get the real picture.
- [What Is Sender Reputation? A Plain-English Guide for Cold Email Senders](https://warmerly.com/blog/what-is-sender-reputation): Sender reputation explained: what it is, how Gmail and Outlook score it, which signals move it up or down, and how to check and improve yours before scaling cold email.
- [Cold Email Setup Guide: Everything You Need Before You Send](https://warmerly.com/blog/cold-email-setup-guide): A complete step-by-step guide to cold email infrastructure in 2026. Sending domain, DNS authentication, mailbox setup, warmup, and your first campaign — in the right order.
- [Outlook Email Warmup: How to Warm Up Microsoft 365 and Outlook.com Mailboxes](https://warmerly.com/blog/outlook-email-warmup): How to warm up Outlook and Microsoft 365 mailboxes for cold outreach. Covers EOP signals, SNDS setup, realistic ramp curves, and Outlook inbox placement monitoring.
- [How Many Cold Emails Can I Send Per Day? Safe Volume Limits Explained](https://warmerly.com/blog/how-many-cold-emails-can-i-send-per-day): There is no single answer — it depends on domain age, warmup status, and recipient mix. Here are the realistic daily limits, how to calculate yours, and the warning signs you have gone too far.
- [How to Check If Your Email Domain Is Healthy](https://warmerly.com/blog/how-to-check-email-domain-health): A practical 30-minute audit of your sending domain: authentication, reputation, blocklists, inbox placement, and the tools that show you the real picture.
- [What Is an Email Blacklist? How to Check and Get Removed](https://warmerly.com/blog/what-is-an-email-blacklist): A plain-English guide to email blacklists: what they are, which ones matter, how senders get listed, how to check if you are on one, and the steps to get removed and stay off.
- [Cold Email Infrastructure Setup: The Complete Guide](https://warmerly.com/blog/cold-email-infrastructure-setup): How to set up cold email infrastructure from scratch: sending domains, DNS records, mailboxes, warmup, and testing before you launch.
- [Google Workspace Email Warmup: How to Do It Right Before Cold Outreach](https://warmerly.com/blog/google-workspace-email-warmup): A practical guide to warming up a Google Workspace mailbox before cold outreach. Covers authentication setup, realistic timelines, common mistakes, and how to know when your domain is ready.
- [Cold Email Bounce Rate: What's Normal and How to Fix It](https://warmerly.com/blog/cold-email-bounce-rate): A high cold email bounce rate damages your sender reputation fast. Here is what causes it, what the safe limits are, and how to clean it up before your domain gets flagged.
- [What Is Inbox Placement? A Plain-English Guide for Cold Email Senders](https://warmerly.com/blog/what-is-inbox-placement): Inbox placement is where your email actually lands — primary, promotions, or spam. Here is what it means, why it differs from delivery rate, how to measure it, and how to improve it before your next campaign.
- [How to Improve Email Deliverability in 2026: The Complete Guide](https://warmerly.com/blog/how-to-improve-email-deliverability): A step-by-step guide to improving email deliverability in 2026. Covers domain setup, authentication, warmup, sender reputation, list hygiene, content, and inbox placement testing.
- [Email Warmup Best Practices: How to Do It Right in 2026](https://warmerly.com/blog/email-warmup-best-practices): The practical guide to email warmup done right. Covers setup, schedules, tool selection, running warmup alongside campaigns, and the signals that tell you when you are ready to scale.
- [Why Are My Cold Emails Not Getting Replies? A Practical Diagnosis](https://warmerly.com/blog/cold-emails-not-getting-replies): Cold emails landing but no replies? Work through the five-layer diagnosis: deliverability, targeting, copy, timing, and follow-up. Most problems are fixable in a week.
- [Why Is My Domain Reputation Low? Causes and Fixes](https://warmerly.com/blog/why-is-my-domain-reputation-low): Your domain reputation affects every email you send. Here are the most common reasons it drops, how to diagnose the problem, and how to recover it.

## Company
- [Trust & security](https://warmerly.com/trust): How Warmerly handles mailbox credentials, OAuth, and data security.
- [Founder](https://warmerly.com/founder): Who builds Warmerly and why.
- [Contact](https://warmerly.com/contact): Get in touch with the Warmerly team.

## Legal
- [Privacy policy](https://warmerly.com/privacy)
- [Terms of service](https://warmerly.com/terms)
- [Cookie policy](https://warmerly.com/cookies)
- [Data processing agreement](https://warmerly.com/dpa)
- [Acceptable use policy](https://warmerly.com/acceptable-use)

## Full content
- [llms-full.txt](https://warmerly.com/llms-full.txt): The full text of every guide and comparison in one file.