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Mailwarm

Email warmup tool to avoid the spam folder·mailwarm.com

Mailwarm is an email warmup and deliverability platform that automatically sends warm-up emails and generates positive engagement signals (opens, replies, non-spam marks) to build sender reputation. It supports Gmail, Outlook, Microsoft 365, Yahoo, Zoho and SMTP-based providers, and offers live inbox-vs-spam placement tracking, infrastructure checks (SPF, DKIM, DMARC), and dashboard analytics. It is aimed at founders, sales teams, marketers, agencies, and developers running cold outbound or campaign email.

What it's for

Warming up new or damaged email domains before cold outreachImproving inbox placement and avoiding the spam folderBuilding and protecting sender/IP reputation over timeMonitoring live inbox vs spam placement per mailbox/SMTPChecking SPF, DKIM, DMARC and blacklist statusManaging warmup across multiple inboxes/domains for agenciesWarming up email infrastructure for applications (developers)Preventing bounces via built-in email verification

Features 15

Automated email warmup across Gmail, Outlook, Microsoft 365, Yahoo, and SMTP
Blacklist detection across major databases
Bounce prevention & built-in email verification
Custom email templates used during warmup
Deliverability dashboard & analytics
Expert deliverability guidance included in every plan
Live inbox vs spam placement tracking (24/7)
Multi-inbox and team/agency management
One-click integrations with Gmail and Outlook/Office 365 via secure OAuth
Progressive volume ramp-up to avoid spam filters
Real Engagement Network of 50,000+ real inboxes
Smart Reply & human-like engagement simulation
Spam score & inbox placement monitoring per provider
SPF, DKIM, and DMARC validation
Support for custom SMTP servers

At a glance

TypeWeb app

DeploymentCloud

PlatformsWeb

Forfounders, sales teams, marketers, agencies, developers, cold outbound teams, newsletter creators

CompanyMailwarm

Integrations

GmailOutlookMicrosoft 365YahooZohoSendGridMailgunAWSSMTP

Resources

Docs

Pricing

Promotional discount codes are available (PH30OFF). Custom/enterprise pricing available via contact.

Starter Plan$69/mo

Up to 50 emails/day, 1 account

Growth Plan$159/mo

Up to 200 emails/day, 3 accounts

Scale Plan$479/mo

Up to 500 emails/day, 10 accounts

Pricing page URL includes promo code 'PH30OFF' suggesting a 30% off promotion