CASE
STUDIES
Review detailed case study dossiers showing how SaaS teams, lead generation agencies, and transactional platforms use MailBurn to scale outbound volume, configure authentications, and bypass spam filters.
98.4%
Average Inbox Placement
0.02%
Average Spam Complaint Rate
99.99%
SMTP Routing Uptime
ScaleOps Lead Generation Recovery
42% → 91%
Inbox placement rate
Technical Diagnosis
ScaleOps was using a single primary domain to send 400 cold outbound sales emails per day using Google Workspace. Lacking SPF alignment and DKIM validation on subdomains, the sudden volume spike triggered Gmail spam filters. Within 10 days, domain reputation fell to “Low” in Google Postmaster Tools, resulting in a 42% inbox placement rate.
MailBurn Solution Plan
1. Provisioned 5 shadow domains (e.g., `scaleopshub.com`) to isolate the primary domain.
2. Set up MailBurn Hosted SMTP mailboxes with pre-warmed dedicated IP addresses.
3. Configured 2048-bit DKIM keys and custom aligned Return-Paths.
4. Automated warmup at a 30% ratio to balance outreach sending limits.
30-Day Recovery Timeline Statistics
| Timeline | Warmup Mails | Outbound Mails | Spam Placement |
|---|---|---|---|
| Day 1 - 5 | 15 / day | 0 / day | 58.0% |
| Day 6 - 15 | 30 / day | 10 / day | 32.4% |
| Day 16 - 25 | 35 / day | 25 / day | 14.1% |
| Day 26 - 30 | 20 / day | 45 / day | 8.9% |
Outbound.io Billing Consolidation
$2.4k → $79
Monthly software spend
Technical Diagnosis
Outbound.io is a lead generation agency managing 80 client mailboxes across 15 domains. Under legacy per-mailbox warming plans, they paid $29/mailbox per month. This resulted in an monthly bill of $2,320 just to maintain sending reputations, making scale unprofitable.
MailBurn Solution Plan
1. Migrated all 80 mailboxes to MailBurn's flat-rate Agency plan at $79/mo flat.
2. Set up automated multi-domain rotation routing to balance outbound volume.
3. Utilized MailBurn's API to manage DNS checks programmatically.
4. Consolidated reply tracking into a single client IMAP catch-all.
Cost & Performance Impact Summary
HealthPing Transactional Email Delivery
30% → 2%
Spam routing bounce rate
Technical Diagnosis
HealthPing is a healthcare SaaS platform routing patient reminders. Lacking DMARC alignment, 30% of transactional emails were routed to the spam folder by Gmail and Yahoo. This caused patient appointment miss rates to rise, affecting operational efficiency.
MailBurn Solution Plan
1. Configured complete DMARC alignment using MailBurn's custom Return-Path values.
2. Migrated transactional email templates to MailBurn Hosted SMTP servers.
3. Set up pre-send seed placement testing to audit templates for spam triggers.
4. Monitored postmaster spam rates to maintain under 0.1% complaint levels.
Deliverability Audit Metrics
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Consolidate your outbound portfolios, configure pre-send placement testing, and start hitting the primary inbox folders natively.