Warmup Inbox is unclaimed —

Warmup Inbox

Land in Primary. Not in Spam.·warmupinbox.com

Warmup Inbox is an email warmup and deliverability service that connects to a user's sending inbox and exchanges natural-looking email with a network of 30,000+ real inboxes to build sender reputation. It gradually increases sending volume and engagement (opens, replies, mark-as-important) so cold email campaigns land in the primary inbox instead of spam. It also monitors deliverability, spam placement, and blacklist status, and offers related tools like language warmup, ESP warmup, and IP warmup.

What it's for

Warming up cold email domains before outreachImproving inbox placement for cold email campaignsKeeping newsletters out of the Promotions tabWarming multiple client inboxes from one dashboard for agenciesReaching recruiting candidates instead of landing in spamWarming a dedicated IP before scaling sending volumeEngaging prospects in their own language via language warmupRescuing emails from blacklists and spam foldersTesting where emails land (Primary/Promotions/Spam) via a placement test

Features 19

API access for developers
Automated opens, replies, and mark-as-important engagement
Blacklist monitoring (100+ blacklists) and automatic rescue
Cold email sequence automation
Custom warmup templates and topics
Dashboards for tracking inbox, spam, and bounce rates
DMARC and SPF generators
Email health checker and deliverability audit
Email warmup via network of 30,000+ real inboxes
ESP-specific warmup
Free inbox placement test
Instant alerts on reputation drops
IP warmup for dedicated IPs
Language warmup
Scheduled warmup
Sender reputation monitoring and scoring
SMTP test tool
Spam checker and spam words checker
Spam folder avoidance / primary inbox placement

At a glance

free trialAPI

TypeWeb app

DeploymentCloud

PlatformsWeb

ForMarketers, SDR teams, Agencies, Recruiters, Sales teams

CompanyCyberPanda s. r. o.

Integrations

GmailGoogle WorkspaceOutlookMicrosoft 365YahooZohoAmazon SESSendGridMailgunProtonMailFastmailiCloudSendinblue (Brevo)reply.iolemlistInstantlyCloseApolloOutreachSmartlead

Resources

Docs

Pricing

Plans priced per inbox per month. Page displays a 'SAVE 20%' annual billing badge, but the stated annual totals ($180, $588, $948) equal exactly 12x the monthly per-inbox rates, so no distinct discounted monthly-equivalent figure is evident in the text. Custom/agency plans (15+ inboxes) are quote-based via demo request.

Basic$15/mo

Billed $180 yearly if paid annually.

75 warmup messages/day; replies up to 25%

Pro$49/mo

Billed $588 yearly if paid annually. Labeled 'Best Value'.

250 warmup messages/day; replies up to 45%

Max$79/mo

Billed $948 yearly if paid annually.

1,000 warmup messages/day; replies up to 50%

Custom (agencies & teams)Quote

Quote-based; requires booking a demo.

Custom plans starting at 15 inboxes; larger volume discounts past 50

Annual billing labeled 'SAVE 20%', though stated annual totals ($180/$588/$948) equal 12x the monthly rate with no visible per-month reduction.