CASE STUDY

When this team started paying attention to data quality, email engagement increased to 78%. See how BarCups and marketing expert Elizabeth Jacobi use ZeroBounce's email validator to drive higher email open rates – and sales.
It's easy to get comfortable when things are just "okay." We've all been there: maybe your emails get decent open rates, click-throughs aren't terrible, and overall, things aren't bad. So, why bother changing anything?
But what if you could do better – way better? That's exactly why Elizabeth Jacobi, founder of MochaBear Marketing, recommended ZeroBounce to her client BarCups, a branded drinkware company.
For Elizabeth, "okay" wasn't enough. Before migrating to a new email service provider (ESP), she decided to dig deeper into BarCups' email data. By focusing on improving list quality, they didn't just tweak their email marketing – they transformed it.
In just a few weeks after the ESP migration, BarCups boosted email engagement to a whopping 78%. Let's break down how ZeroBounce helped turn things around and what this could mean for your business.

BarCups was founded in 2022 as a sister company to Beach House Logos, a full-service promotional products company known in the vacation rental industry. BarCups' mission is to better serve the restaurant, bar, and golf course industry with the best in personalized drinkware.

MochaBear Marketing is an email marketing consultancy founded by Elizabeth Jacobi. With over 20 years of experience in email marketing and marketing automation, Elizabeth offers her clients everything from strategy to full-service email marketing, emphasizing the customer journey.
Eighty-eight percent of people check their inboxes daily, and 40% do it in search of brand coupons and discounts. The team at BarCups knew their email marketing could drive even more sales – but it needed a revamp.
When BarCups wanted to transition to Mailchimp, Elizabeth Jacobi, a certified Mailchimp Pro Partner who's worked with brands like Toyota and Harry & David, knew that using a solid sending platform was only the first step to increasing email engagement. She also brought up the importance of using a healthy email list, especially during an ESP migration.
"BarCups had been sending emails through another platform and relying solely on opens and replies. When we started working on migrating to Mailchimp, I knew it was vital to make sure the data was clean," Jacobi told ZeroBounce.
"One of the significant benefits of using Mailchimp is that email deliverabilityⓘ is essential to them, and brands with high abuse complaints run into issues," she added.
Mailchimp sends over 600 million emails daily. To maintain high email deliverability rates for its 11+ million users, it enforces strict data hygiene rules for senders. Mailchimp Omnivore, the company's abuse prevention algorithm, monitors for suspicious and abusive email addresses.
Whenever a user imports a new list of contacts, Omnivore checks them to determine potential risk levels relating to data quality. Getting an Omnivore warning means you can't send emails to anyone on that list – until you make sure it's valid and healthy.
That's right: this means your email marketing program will come to a halt.

Mailchimp's Omnivore warning prevents senders from reaching out to an unsafe email list.

"We also knew that BarCups desired to send to the maximum number of subscribers to increase revenue for this business," Elizabeth Jacobi told us. "However, to do this, we knew that data hygiene was a must to essentially relaunch the email program for this brand."
- Elizabeth Jacobi, MochaBear Marketing
All aspects are important in an email marketing program, but the email list? That's vital. It's also the most fragile part of the puzzle: more than a quarter of the average database decays yearly.
To ensure BarCups was in great shape ahead of the migration to Mailchimp, Elizabeth Jacobi suggested running the company email list through ZeroBounce.
"I've been a fan of ZeroBounce for a long time and recommend it often. I work with a lot of Mailchimp customers, and the integration between Mailchimp and ZeroBounce is streamlined, so it is an easy recommendation to make, especially when migrating to a new platform," said the marketing pro, who has 20 years of experience.
Check 100 email addresses for free
Cleaning the BarCups email list was a breeze, and it gave the team a clear picture of the health of their data. "We were able to get rid of 13% of bad data before loading anything to Mailchimp."
Email marketing platforms charge based on the number of contacts on an email list. By removing those obsolete email addresses, BarCups saw an immediate reduction in costs. But that's not all: after the team validated a good chunk of that list, email engagement went up.

"We saw a 78% engagement rate on an onboarding journey.By loading only 87% of the initial list, we saw a 78% engagement rate on an onboarding journey. However, we did have a group that we did not initially run through ZeroBounce. That group only saw 22% engagement on the same journey, which shows the importance of utilizing a data hygiene service."
- Elizabeth Jacobi, MochaBear Marketing
The founder of MochaBear Marketing also pointed out that companies often think changing email service providers is enough to boost metrics. "I always run into this issue where clients think moving to a new platform will solve the issue." But oftentimes, poor click rates are because of "a data issue," Jacobi adds, emphasizing how important email hygiene is during an ESP migration.
"Brands invest a lot of resources in developing email programs and growing their subscriber lists. However, they often end up wasting funds by sending emails to invalid addresses, inactive email accounts, or accidentally including spam traps in their lists. ZeroBounce solves this and is an essential tool that brands should add to their tech stack," the email marketing expert added.
Validate 100 email addresses monthly at no cost
Our customer Gene Massey, knows how risky an outdated email list can be. His company, MediaShares, got blocked by its email service provider because of a 12% bounce rate.
See how ZeroBounce helped fix the problem.

"I wouldn't dream of sending a mass email without running my list through ZeroBounce."
- Gene Massey, MediaShares
Using a reliable ESP and a healthy, validated database is a great way to increase your overall email engagement. But if you're ready to take things up a notch, here are some extra tips – follow these rules, and your click rates will be boosted.
If you're curious about the quality of your list, you can get a free evaluation – no account needed. Simply upload your contacts to our free email list evaluator, and it'll instantly reveal what percentage of your data has decayed.
Get a free evaluationGet 100 free monthly credits - business or premium domain required
