Cold-email infrastructure, watched like vitals.
See the decay before the crater.
Continuous placement testing, blacklist probes across 11 DNSBLs, warmup vitals every four hours. Risk scores rise before deliverability collapses — so you act on the warning, not the wreckage.
Replace a burned domain in zero clicks.
Spaceship → Cloudflare → Workspace → Instantly → warmup. The ten-hour playbook, run end-to-end by Mailnurse while you sleep.
Pull burning accounts off the line.
Eight codified rules with severity tiers from warn to pause to replace. When bounce velocity climbs or a DNSBL hits, Mailnurse stops the sends before the campaign goes wider.
Swap dead mailboxes in seconds.
When an individual mailbox loses engagement or burns its reputation, Mailnurse retires it and assigns a fresh persona from the pre-warmed pool — name, photo, identity, all coherent.
Hold inbox placement above 90%.
Mailnurse manages the warmup schedule, adjusts send volume to engagement, and re-tests placement nightly. The score stays high without you tuning the dials.
Two hundred accounts, twelve clients, one dashboard.
Multi-tenant isolation, per-sub credentials, agency-grade roll-up reporting. Know which client's deliverability is worst right now without opening twelve tabs.
Fleet health
14-day trace · 4h refresh- pelmark.com inbox 94% 14d
- novamere.com inbox 92% 11d
- turovix.com inbox 91% 8d
- brixvolt.com inbox 89% 3d
- drovexal.com inbox 87% 2d
- kelthorn.com inbox — live
kelthorn.com → drovexal.com
Step 3 of 5 · ~6m remaining- 01 doneSpaceshipDomain purchased
- 02 doneCloudflareDNS zone live
- 03 runningWorkspaceTenant provisioning…
- 04 queuedInstantlyMailboxes pending
- 05 queuedWarmupSchedule queued
Rules engine
8 active · Last evaluation 09:24- pauseBounce velocity7-day climb vs baseline
- pausePlacement drop< 85% inbox placement
- warnBlacklist hits2+ DNSBL listings
- pauseAuthentication regressionSPF/DKIM/DMARC fail rate > 5%
- warnWarmup driftengagement slope < expected
- replaceEngagement collapseopen rate -25% over 7d
- warnAge mismatchsend volume > age-banded threshold
- warnFleet anomalycross-account signal
Persona pool
24 ready · 6 in pipelineWarmup placement curves
14-day trace · 85% target- nimrack.com Day 12 / 14 92%
- briskorn.com Day 9 / 14 78%
- cleavest.com Day 4 / 14 58%
Agency roll-up
12 workspaces · 4h refreshFive problems that quietly burn down cold-email programs.
Every page, every blog post, every feature maps to one of these. This is the spine.
Health monitoring
Continuous placement testing, 11-DNSBL probes, warmup vitals every four hours. A composite risk score per account so decay is visible before deliverability collapses.
Learn more 02Auto-rotate domains
When a domain burns, replace it end-to-end: Spaceship → Cloudflare → Workspace → Instantly → warmup. The ten-hour playbook, run while you sleep.
Learn more 03Auto-pause spam
When bounce velocity climbs, DNSBLs hit, or placement drops, the rules engine pauses sends before the campaign goes wider. Eight codified rules with severity tiers.
Learn more 04Auto-replace mailbox
When a mailbox loses engagement or burns its reputation, Mailnurse retires it and assigns a fresh persona — name, photo, identity included — from the pre-warmed pool.
Learn more 05Auto-placement
Warmup schedules locked to the deliverability literature. Send volume auto-adjusts to engagement. Placement re-tested nightly. The score stays high without manual tuning.
Learn more 06Multi-tenant fleet
One dashboard for 200+ accounts across 12 clients. Multi-tenant isolation, per-sub credentials, agency-grade roll-up reporting, white-label option.
Learn moreThree steps. Then it runs without you.
- 01
Connect.
Bring your Instantly, Workspace, and Cloudflare credentials. Two minutes. Once.
- 02
Monitor.
Mailnurse watches every sending account around the clock — placement, authentication, blacklists, warmup vitals.
- 03
Heal.
When an account decays, Mailnurse pauses it. When a domain burns, Mailnurse replaces it end-to-end.
Simple pricing that scales with your fleet.
Public pricing, no sales call required. Fourteen-day free trial, no credit card.
Starter
Solo agency
- Up to 25 sending accounts
- Monitoring + rules
- 1 workspace
Pro
Most popularEstablished agency
- Up to 150 sending accounts
- Auto-rotate domains
- Unlimited workspaces
Agency
Multi-client scale
- Up to 500 sending accounts
- Multi-tenant client portal
- White-label option
Need 500+ accounts? Enterprise pricing
Built for the agencies running cold email at scale
- NORTHWIND
- STARTRAIL
- CARTERSCALE
- BERGMAN & CO
- OUTFLEET
- COLDLABS
Care, expressed as precision.
Cold-email infrastructure that watches itself — so you can focus on the campaign, not the chassis.
14-day free trial · No credit card · Instant setup