MailFix case studies and deliverability results
Case studies
Verified deliverability outcomes
B2B SaaS (transactional)
Before
40% critical transactional emails were routed to spam.
After
95% inbox delivery after auth alignment and sender trust fixes.
2 days to first stable recovery window
SPF alignment corrected
DKIM selectors rotated
DMARC policy tightened
Regional e-commerce
Before
Campaigns were inconsistent across Gmail and Outlook during high-volume periods.
After
Inbox consistency recovered and bounce pressure reduced after monitored remediation.
14 days including DNS propagation and verification checks
Blacklist recovery runbook
Provider-specific retests
Monitoring alerts enabled
Digital agency (multi-client)
Before
No standardized way to prove progress to clients after technical changes.
After
Shareable repair reports and weekly trend digest improved client sign-off speed.
3 business days to first shareable evidence report
Per-domain notes and assignees
Shareable report links
Weekly email summaries
Evidence-first approach
Every case in MailFix is built around measurable checkpoints: baseline health, change log, verification snapshots, and trend follow-up.
Verification methodology
- Baseline and post-fix snapshots are compared using the same domain and window.
- Provider outcomes are logged with timestamped trend checkpoints.
- Only outcomes with full before/after evidence are published in this section.