Hummingbird
Financial Services
Hummingbird generated roughly 3X ROI from Mailscale-powered cold email
One new client covered roughly two quarters of Mailscale costs
“One client kind of pays for like two quarters, and I think we've gotten like three or four clients.”
Bruno Nicoletti
Founder and CEO, Hummingbird
~3X
ROI based on Mailscale spend
3-4
New clients closed
2 quarters
Mailscale cost covered by one new client
The company
About Hummingbird
Hummingbird helps financial advisors, insurance agents, recruiters, and B2B sales teams generate qualified meetings through prospecting systems. Its website says the company is trusted by more than 2,500 financial professionals.
The challenge
Hummingbird knew cold email worked. Running it reliably was the problem.
Hummingbird had used cold email before, but the team did not have a system it could run consistently without risking important business domains or carrying the operational burden of domains, accounts, and deliverability.
Before Mailscale, the company had used GoHighLevel and tried Instantly, but cold email volume had eventually fallen to zero. Bruno wanted to restart outreach at scale without burning Hummingbird's core domains.
““I knew it worked. I just couldn't figure out the deliverability, not burning my best domains, and just the headache of getting domains and creating accounts.”
Bruno Nicoletti
Founder and CEO, Hummingbird
The solution
A dependable sending and deliverability engine
Hummingbird used Mailscale as the sending and deliverability engine behind its cold-email campaigns. Mailscale also provided ongoing account-management support to review performance and help the team improve campaign execution.
A note on the result: Hummingbird's result came from its own offer, campaign work, and sales process, supported by Mailscale's infrastructure and guidance.
The results
Cold email became a profitable customer acquisition channel
By July 28, 2026, Bruno said Hummingbird had closed approximately 3-4 clients from its Mailscale campaigns. He estimated that one new client covered roughly two quarters of Mailscale costs and agreed that the return was around 3X based on Mailscale spend.
He also said leads from cold email were moving through shorter sales cycles, with some becoming first-call closes.
““We're getting meetings, we're closing a lot of these, and that's been good.”
““The people that are coming in from the emails, it's been shorter sales cycles too. It's like first-call closes.”
What they liked most
Support that stayed close to the campaigns
Mailscale removed an operational problem that had stopped Hummingbird from using a channel Bruno already believed in. Instead of carrying the work of domains, accounts, and deliverability alone, his team could focus on campaigns, meetings, and closing business.
““The team has been great. Omar has guided me every step of the way.”
Bruno Nicoletti
Founder and CEO, Hummingbird
Verified public review
5-star Trustpilot review
4x ROI
Published July 31, 2026
View Mailscale reviews on Trustpilot
“If you don't hear from me, it's good, because it's working.”
Bruno Nicoletti
Founder and CEO, Hummingbird
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