Case Studies

Real results from real businesses 

See how businesses catch blacklistings early, recover inbox placement, and protect email deliverability with continuous monitoring.

Case Study 01

E-commerce

15 employees

The challenge

Email open rates dropped 40% overnight. After 3 days of investigation, the team discovered their sending IP was listed on 3 major blacklists including Spamhaus SBL. By then, thousands of abandoned cart emails had gone undelivered — and the damage to their revenue was already done.

The solution

They set up IsMyEmailBlacklisted monitoring on their sending domain and IP. Used the built-in Spamhaus delisting playbook to navigate removal. Migrated to a dedicated IP and set up email alerts for instant notification of any future issues.

The result

0

Relistings in 6 months

26%

Email open rate (up from 23%)

$8,400

Monthly cart email revenue recovered

“We had no idea we were blacklisted until sales started dropping. Now we know within minutes.”

— E-commerce

Case Study 02

SaaS / Transactional Email

8 employees

The challenge

A new product launch was approaching. Onboarding emails weren't reaching trial users — 35% were never delivered. Root cause: no DKIM, a weak SPF policy, no DMARC, and MX records pointing to a previously-shared IP with a history of spam. The team discovered this only when reviewing trial-to-paid conversion rates.

The solution

The team used the free SPF, DKIM, and DMARC checker tools to identify every issue before launch. Fixed all configuration problems using the remediation playbooks. Set up Pro plan monitoring to catch any future regressions automatically.

The result

99.1%

Email deliverability on launch day

0

Support tickets about missing emails

30 days

Clean inbox record post-launch

“We caught every deliverability issue before launch. The DMARC playbook alone saved us days of debugging.”

— SaaS / Transactional Email

Case Study 03

Digital Marketing Agency

22 employees, 30+ clients

The challenge

Managing email deliverability across 30+ client domains was entirely manual. The team was checking MXToolbox for each client weekly. Two clients got blacklisted and blamed the agency before the team even knew there was a problem — a significant trust and relationship risk.

The solution

Moved to the Agency plan and added all 30+ client domains in bulk. Set up Slack alerts routed to the account management channel. Generated white-label PDF monthly reports for each client showing deliverability scores — turning monitoring into a visible, client-facing service.

The result

11

Blacklistings caught before clients noticed

18

Clients on billable monitoring add-on

$150

Monthly upsell per client for the service

“We went from reactive to proactive. Now clients pay us to protect something they didn't know needed protecting.”

— Digital Marketing Agency

Common questions

How long does it take to recover from an email blacklisting?
Recovery time varies by blacklist. Spamhaus typically processes delisting requests within 24-48 hours once you address the root cause. Barracuda usually takes 12-24 hours. The fastest recoveries happen when the root cause is fixed before submitting the delisting request. With monitoring in place, many businesses catch and resolve blacklistings within a few hours.
How much revenue can a blacklisting cost?
The cost depends heavily on your email volume and the nature of those emails. For e-commerce businesses, blacklistings that affect transactional emails (order confirmations, abandoned cart, shipping notifications) can cost thousands per day. One of our case studies estimated $8,400/month in recovered abandoned cart email revenue after resolving a blacklisting.
Can email deliverability issues be prevented?
Most blacklistings and deliverability issues can be prevented with proper authentication setup (SPF, DKIM, DMARC), a clean sending reputation, and continuous monitoring. Our case studies show that businesses that set up monitoring and fix authentication issues before launch or before a critical campaign have dramatically better outcomes than those who react after problems appear.

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