Warmup runs 1:1 conversations between your mailboxes and a trusted peer pool, builds reputation with every major ESP, and surfaces the deliverability insights you actually need — so your real campaigns land in the inbox, not the spam folder.
No credit card · 14-day free trial · GDPR-native · EU-hosted
Every screen, every metric, every connector exists to answer one question: are your messages reaching the inbox? We turn that question into actions you can take today.
One-click OAuth into Google Workspace and Microsoft 365. SMTP + IMAP fallback for everything else, with envelope-encrypted credentials at rest.
Separate scores for Gmail, Microsoft, Yahoo, Apple and Other. Spot divergence early — before one bucket tanks while the others stay green.
Multilingual content, validated against a deliverability rubric. Real replies and folder moves — not template stuffing that ESPs catch in seconds.
Real mailboxes we operate on Gmail, Outlook, Yahoo, Apple, Yandex, Mail.ru, Zoho, ProtonMail and more. Placement tests in 60 seconds.
Pick a ramp curve, lock in business hours, choose languages and topics. The schedule respects your timezone and dares to slow down on weekends.
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.
Connect a mailbox, optionally drop in a template, and the warmup loop runs the rest. The donut fills as reputation accumulates and seed-list placement is verified.
Gmail, Microsoft 365, or any SMTP+IMAP provider. OAuth or app password — your call. Detection by domain pre-fills SMTP host and port.
Standard ramp (5 → 50 over 9 days) covers 90% of accounts. Custom ramp lets you draw the curve yourself if you've already started warming elsewhere.
First placements verify within ~24 hours. The reputation donut + per-ESP score grid populate from there. Drift gets flagged before it costs you sends.
Connect a mailbox in two minutes. Watch the donut fill as reputation builds. No credit card required.
play_arrow Start free trial