# 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 $19/month (Starter), with every plan including email, LinkedIn, and WhatsApp warmup and unlimited mailboxes.

## 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): Three tiers, email + LinkedIn included on every plan: Starter from $19/mo, Growth from $49/mo, Agency from $179/mo.
- [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): Instantly bills $37+ per mailbox slot. Warmerly warms unlimited mailboxes for $19/mo flat. 10-min spam rescue, 30-day refund. Free 7-day trial, no charge until day 8.
- [Warmerly vs Warmly.ai](https://warmerly.com/compare/warmly): Warmly.ai is website visitor ID and AI outbound from $700+/mo. Warmerly is flat-rate email warmup from $19/mo. Different jobs — here's which one you actually need.
- [Warmerly vs Smartlead](https://warmerly.com/compare/smartlead): Smartlead charges $39/mo for 10 mailboxes. Warmerly covers unlimited mailboxes for $19 flat — with 5-provider placement testing and 10-min spam rescue. 7-day free trial.
- [Warmerly vs Mailwarm](https://warmerly.com/compare/mailwarm): Mailwarm charges $69 per mailbox. Warmerly covers unlimited mailboxes for $19/mo — with daily SPF/DKIM/DMARC checks and faster spam rescue. No card for 7-day trial.
- [Warmerly vs Mailreach](https://warmerly.com/compare/mailreach): Mailreach charges per mailbox. Warmerly covers unlimited mailboxes for $19/mo — with 5-provider placement seeds and daily SPF/DKIM/DMARC checks. Free 7-day trial.
- [Warmerly vs Warmbox](https://warmerly.com/compare/warmbox): Warmbox charges per inbox. Warmerly covers unlimited Gmail and Microsoft mailboxes for $19/mo flat — with 10-min spam rescue and daily DNS checks. 7-day trial.
- [Warmerly vs Folderly](https://warmerly.com/compare/folderly): Folderly starts at $120+/mo for a full suite. If you need warmup only, Warmerly covers unlimited mailboxes for $19/mo with daily auth checks. 7-day free trial.
- [Warmerly vs Lemwarm](https://warmerly.com/compare/lemwarm): Lemwarm charges per mailbox. Warmerly covers unlimited mailboxes for $19/mo — with 5-provider inbox placement and daily auth monitoring. Free 7-day trial.
- [Warmerly vs Mystrika](https://warmerly.com/compare/mystrika): Mystrika's free tier limits mailbox count. Warmerly covers unlimited mailboxes for $19/mo with daily auth monitoring and 10-min spam rescue. Free 7-day trial.
- [Warmerly vs Expandi](https://warmerly.com/compare/expandi): Expandi is LinkedIn-only at $99/seat. Warmerly runs LinkedIn and email together from $19/mo — with account warmup and deliverability built in. 7-day free trial.
- [Warmerly vs Waalaxy](https://warmerly.com/compare/waalaxy): Waalaxy sells email as a paid add-on with no warmup. Warmerly includes LinkedIn, email, and deliverability from $19/mo. Free 7-day trial, no charge until day 8.
- [Warmerly vs Dripify](https://warmerly.com/compare/dripify): Dripify is LinkedIn-only at $59/seat. Warmerly adds email outreach and warmup in the same tool from $19/mo. 7-day free trial, no charge until day 8.
- [Warmerly vs HeyReach](https://warmerly.com/compare/heyreach): HeyReach is LinkedIn-only at $79/seat. Warmerly runs LinkedIn and email with deliverability built in from $19/mo. Free 7-day trial, no charge until day 8.
- [Warmerly vs lemlist](https://warmerly.com/compare/lemlist): LinkedIn steps in lemlist need the $99 multichannel tier. Warmerly includes LinkedIn, email, and account warmup from $19/mo. Free 7-day trial.
- [Warmerly vs La Growth Machine](https://warmerly.com/compare/la-growth-machine): La Growth Machine doesn't warm your LinkedIn account or mailboxes. Warmerly does both from $19/mo with daily auth monitoring. Free 7-day trial.
- [Warmerly vs Skylead](https://warmerly.com/compare/skylead): Skylead charges $100/seat for its all-in-one plan. Warmerly starts at $19/mo and includes LinkedIn account warmup, email, and daily auth monitoring. 7-day free trial.
- [Warmerly vs Dux-Soup](https://warmerly.com/compare/dux-soup): Dux-Soup runs from your browser for LinkedIn only. Warmerly is cloud-based LinkedIn and email with warmup built in from $19/mo. 7-day free trial.
- [Warmerly vs Octopus CRM](https://warmerly.com/compare/octopus-crm): Octopus CRM runs from a Chrome extension. Warmerly is cloud-based LinkedIn and email outreach with warmup built in from $19/mo. Free 7-day trial.
- [Warmerly vs Meet Alfred](https://warmerly.com/compare/meet-alfred): Meet Alfred doesn't warm your LinkedIn account or mailboxes. Warmerly does both from $19/mo — human-paced LinkedIn, email, and SPF/DKIM/DMARC monitoring.
- [Warmerly vs Closely](https://warmerly.com/compare/closely): Closely is LinkedIn-focused at $49/seat. Warmerly runs LinkedIn and email with deliverability built in from $19/mo. 7-day free trial, no charge until day 8.
- [Warmerly vs LinkedIn Helper](https://warmerly.com/compare/linkedin-helper): An honest comparison of Warmerly and LinkedIn Helper for LinkedIn outreach: automation depth, account warmup, cloud vs desktop sending, multichannel email, and deliverability.

## Guides & articles
- [Why Are My Emails Going to Junk? The 2026 Fix Guide](https://warmerly.com/blog/why-are-my-emails-going-to-junk): Emails going to junk? The six real causes — authentication, sender reputation, volume spikes, content, list hygiene, low engagement — with how to diagnose and fix each, and how to prevent it.
- [Reply.io vs Instantly (2026): Which Cold Email Tool Fits?](https://warmerly.com/blog/reply-io-vs-instantly): Reply.io vs Instantly compared for 2026: pricing, sending scale, multichannel, integrations, and warmup — which cold email platform fits your team, plus the deliverability layer both assume.
- [Instantly vs Clay (2026): Competitors or Complements?](https://warmerly.com/blog/instantly-vs-clay): Instantly vs Clay for 2026: they are not really competitors. Clay finds and enriches leads; Instantly sends to them. Here is how they fit together — and the deliverability piece both need.
- [Dripify vs Meet Alfred (2026): Which LinkedIn Tool Wins?](https://warmerly.com/blog/dripify-vs-meet-alfred): Dripify vs Meet Alfred compared for 2026: pricing, LinkedIn automation depth, multichannel reach, team features — which fits your outreach, plus the account-warmup gap both share.
- [Lemlist vs Waalaxy (2026): Which One Should You Use?](https://warmerly.com/blog/lemlist-vs-waalaxy): Lemlist vs Waalaxy compared honestly for 2026: pricing, LinkedIn vs email strength, deliverability, and who each tool is genuinely best for — plus the gap both leave open.
- [Expandi vs Meet Alfred (2026): Honest LinkedIn Tool Comparison](https://warmerly.com/blog/expandi-vs-meet-alfred): Expandi vs Meet Alfred compared for 2026: pricing, personalization, multichannel reach, agency features, and which LinkedIn automation tool fits your team — plus the warmup gap both share.
- [Instantly vs Lemlist (2026): Which Cold Email Tool Wins?](https://warmerly.com/blog/instantly-vs-lemlist): Instantly vs lemlist compared for 2026: pricing, warmup, sending scale, personalization, and multichannel — which cold email platform fits you, plus the warmup economics both get wrong at scale.
- [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.
- [7 Best Instantly.ai Alternatives in 2026 (Free & Paid, Tested)](https://warmerly.com/blog/instantly-ai-alternatives): Looking to leave Instantly.ai? Here are the 7 best alternatives for cold email warmup and outreach in 2026 — with honest pricing, feature breakdowns, and who each tool is best for.
- [Gmail Spam Folder? Here's the 7-Step Fix (2026)](https://warmerly.com/blog/how-to-fix-gmail-spam-folder): Cold email landing in Gmail's spam folder? Fix it in this order: authentication, Postmaster Tools, volume, warmup, content, list hygiene. Step-by-step.
- [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.
- [Inbox in Gmail, Spam in Outlook? Here's Why](https://warmerly.com/blog/gmail-vs-outlook-cold-email-spam): Gmail and Outlook filter cold email differently. Learn what each checks, how to read Postmaster Tools and SNDS, and how to fix the gap between them.
- [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.
- [Emails Going to Junk in Outlook? Fix It in 7 Steps](https://warmerly.com/blog/outlook-emails-going-to-junk): Outlook emails keep landing in junk? Fix order: DKIM, SNDS, blocklists, content, send volume. Covers Outlook.com, Hotmail, and Microsoft 365.
- [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 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.
- [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.
- [How to warm up a new LinkedIn account before you start outreach](https://warmerly.com/blog/warming-up-a-linkedin-account-before-outreach): A new LinkedIn account that fires off 50 connection requests on day one gets restricted fast. Here is how to warm up an account over 3-4 weeks so it looks human, builds trust signals, and can actually run outreach without tripping a review.
- [LinkedIn outreach mistakes that quietly kill your reply rate](https://warmerly.com/blog/linkedin-outreach-mistakes): Most LinkedIn outreach fails from an accumulation of small, invisible mistakes — not one obvious blunder. Here are the patterns that drain reply rate, and how to fix each one.
- [What is the LinkedIn SSI score, and does it matter for outreach?](https://warmerly.com/blog/what-is-linkedin-ssi-score): LinkedIn's Social Selling Index scores your profile 0-100 across four behaviors. Here is what it actually measures, where to find it, and whether it should change how you run outreach.
- [The best time to send LinkedIn messages (and why timing is overrated)](https://warmerly.com/blog/best-time-to-send-linkedin-messages): There is a defensible "best time" to send LinkedIn messages, but it moves the needle far less than who you message and what you say. Here is what the timing data actually supports, and where to spend your attention instead.
- [Your LinkedIn account got restricted: how to recover and avoid it next time](https://warmerly.com/blog/linkedin-account-restricted-recovery): A restricted LinkedIn account is recoverable if you act in the right order. Here is what each restriction type means, how to get reinstated, and the sending behavior that keeps it from happening again.
- [The LinkedIn outreach metrics worth tracking (and the vanity ones to ignore)](https://warmerly.com/blog/linkedin-outreach-metrics-to-track): A practical guide to the LinkedIn outreach metrics that predict pipeline — acceptance rate, positive reply rate, meeting conversion, account health — and the vanity numbers (profile views, impressions, SSI) safe to ignore.
- [How to research a prospect on LinkedIn before you reach out](https://warmerly.com/blog/linkedin-prospect-research): A repeatable LinkedIn prospect research workflow: what to read on a profile, which signals actually predict a reply, and how to turn five minutes of research into a first line nobody else could write.
- [Using LinkedIn groups and events for warmer outreach](https://warmerly.com/blog/linkedin-group-and-event-outreach): LinkedIn groups and events give you a shared context before you ever send a connection request. Here's how to use that membership signal to make cold outreach read as warm.
- [The Ideal Follow-Up Cadence for Email and LinkedIn Outreach](https://warmerly.com/blog/ideal-follow-up-cadence-email-linkedin): A data-informed follow-up cadence for cold email and LinkedIn outreach: how many touches, how many days apart, when to switch channel, and when to stop.

## Docs & API reference
- [API overview](https://docs.warmerly.com/): Introduction to the Warmerly REST API.
- [Authentication](https://docs.warmerly.com/authentication): How to authenticate API requests with an API key.
- [Accounts](https://docs.warmerly.com/accounts): Manage connected mailboxes via the API.
- [Campaigns](https://docs.warmerly.com/campaigns): Create and manage outreach campaigns via the API.
- [Warmup](https://docs.warmerly.com/warmup): Warmup job and health-score endpoints.
- [Verify](https://docs.warmerly.com/verify): Email verification endpoints.
- [Email Finder](https://docs.warmerly.com/email-finder): Find and enrich email addresses via the API.
- [Inbox](https://docs.warmerly.com/inbox): Read and manage inbox messages via the API.
- [Workspaces & Projects](https://docs.warmerly.com/workspaces): Workspace and project management endpoints.
- [API Keys](https://docs.warmerly.com/keys): Create, list, and revoke API keys.
- [Guides: all guides](https://docs.warmerly.com/guides): Plain-English, click-by-click setup guides for non-developers.
- [Guides: What is DKIM?](https://docs.warmerly.com/guides/dkim): What DKIM is and how to fix a 'DKIM not found' warning.
- [Guides: DKIM on Namecheap](https://docs.warmerly.com/guides/dkim/namecheap): Click-by-click DKIM setup for domains on Namecheap.
- [Guides: DKIM on IONOS](https://docs.warmerly.com/guides/dkim/ionos): Click-by-click DKIM setup for domains on IONOS.
- [Guides: DKIM on GoDaddy](https://docs.warmerly.com/guides/dkim/godaddy): Click-by-click DKIM setup for domains on GoDaddy.
- [Guides: DKIM on Cloudflare](https://docs.warmerly.com/guides/dkim/cloudflare): Click-by-click DKIM setup for domains on Cloudflare.
- [Guides: SPF & DMARC](https://docs.warmerly.com/guides/spf-dmarc): What SPF and DMARC are and how to set them up.
- [Guides: Custom tracking domain](https://docs.warmerly.com/guides/custom-tracking-domain): How to use your own domain for email open/click tracking links.
- [Guides: Connecting a mailbox](https://docs.warmerly.com/guides/mailbox-connection): One-click and manual (IMAP/SMTP) mailbox connection steps.

## 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.