Warmup automates 1:1 conversations between your mailboxes and a trusted peer pool, builds reputation with every major ESP, and surfaces actionable deliverability insights — so your real campaigns land in the inbox, not the spam folder.
No credit card required · GDPR-native · EU-hosted on Hetzner
Every screen, every metric, every connector exists to answer one question: are your messages landing where they should?
OAuth into Google Workspace and Microsoft 365 in one click. SMTP+IMAP fallback for everything else, with envelope-encrypted credentials at rest.
Separate scores for Gmail, Microsoft, Yahoo, Apple, and Other. Spot a divergence early — before it tanks one bucket while the others stay green.
Multilingual content from Claude Haiku and GPT-4o-mini, validated against a deliverability rubric. Real replies, not template stuffing.
Hetzner Cloud in Falkenstein with our own /29 IP block. Audit log replicated WORM. Right-to-export and right-to-delete out of the box.
Real mailboxes we operate on Gmail, Outlook, Hotmail, Yahoo, Apple, Yandex, Mail.ru, Zoho, ProtonMail, and more. Run a placement test in 60 seconds.
Twelve action-oriented lessons covering SPF, DKIM, DMARC, ramp curves, blacklist remediation, and ESP-specific tips. Free even on the trial.
Connect a mailbox in two minutes. Watch the donut fill as reputation builds.
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