Product

Infrastructure for every message you send.

Validation, warm-up, diversified routing and a self-serve testing interface — the parts of email infrastructure most teams don't want to build themselves.

Validation & Warm-up

Nothing reaches your sending flow unchecked.

Every address is validated before it enters your list, cutting bounces and complaints before they start. New domains and IPs are warmed up on a schedule built specifically to protect reputation from day one — not a generic ramp.

Most ESPs treat bad addresses and complaints as your problem — often an account-suspension warning if you don't catch it fast enough. We treat it as ours: validation happens before anything reaches your sending flow, so that warning never reaches your inbox.

Launching a new domain keeps getting harder — one anomalous spike in spam complaints early on can drop it straight into a low reputation tier before it's had a real chance. We treat every launch as a live experiment, constantly testing and adjusting the ramp, so it lands on real email marketing performance for your product — not just a domain that technically survived.

  • Real-time email address validation via API
  • Domain warm-up scheduled over up to 3 months
  • Additional domains and IPs added without resetting reputation
Domain warm-upWeek 6 of 12
98.2%
Valid
1.1%
Risky
0.7%
Invalid
Sending routesLive
Provider A
Primary MTA
Active
Provider B
Secondary MTA
Active
Provider C
Failover MTA
Standby

Risk & Infrastructure

Risk-based sending on diversified infrastructure.

Sending decisions adjust to the real risk profile of each email and domain, not a flat, one-size-fits-all ruleset. Underneath it, Mailkeeper runs on multiple providers and MTAs — so no single vendor outage or blacklist takes your sending down with it.

  • Multiple MTAs and providers, routed automatically
  • Reputation issues resolved as a dedicated one-time engagement when needed
  • Multiple sending domains and dedicated IPs, by plan

Analytics & Reputation Strategy

A dashboard, backed by a decade of judgment.

Opens, bounces, complaints and inbox placement, reported on a cadence that matches your plan — weekly, bi-weekly or monthly. But the numbers are only half of it: a team with 10+ years in email builds and runs the strategy behind your sender score, not just the dashboard that shows it to you.

  • Reporting cadence from monthly to weekly, by plan
  • Regular check-in meetings with your dedicated strategist
  • Sender score monitored continuously, issues flagged before they cost inbox placement
This weekUpdated daily
96/100
Sender score
98.4%
Inbox placement
Next report
Weekly cadence
In 3 days

Control

Test anything, ship changes yourself.

Launch a test on sending logic, email content, or any part of a message — and push infrastructure changes — from one interface. No waiting on a ticket queue to try something new.

Every test and every change is visible to your dedicated Mailkeeper strategist, so infrastructure moves stay aligned with your reputation goals.

Active tests
Subject line — A/B
Variant B, 50% split
Live
Sending logic
Advanced, 3x/week cadence
Live
Content block — hero image
Awaiting review
Draft
Infrastructure — MTA routing
Secondary provider added
Live

See it running on your own domain.

A 20-minute call — we'll hear where your product's email is struggling and figure out, together, whether we're the right fit.

Book a call