These aren't manufactured case studies. They're outcomes from real projects across SaaS, FinTech, e-commerce, and agencies.
A SaaS startup was sending 500 cold emails/day from their primary business domain with no SPF, a broken DKIM key, and no DMARC. They were getting 12% open rates and 0 replies. Their domain was on 3 major blacklists.
What I did: Fixed all DNS records, set up 5 dedicated sending domains, implemented warm-up protocol, built multi-mailbox rotation in Instantly, and redesigned sequence timing.
"InboxSpire transformed our outreach. We went from 0 replies a week to booking 12–15 meetings per week within 6 weeks of the fix." — Founder
A 5-person FinTech SDR team was using Apollo with no ICP filters, sending to everyone in their database. Open rates of 11%, reply rates of 0.3%. They'd bought the Enterprise plan but were using it like a mass email tool.
What I did: Rebuilt their ICP filters, built verified contact lists, redesigned 3 sequences with proper personalization, connected to HubSpot, and trained the full team over 4 recorded sessions.
"Naeem's Apollo setup paid for itself in the first month. We went from 2 meetings a week to 10." — Head of Sales
An e-commerce brand with 50K email subscribers was sending one weekly campaign to their full list. No segmentation, no automation flows. Email was generating 8% of revenue despite having one of the brand's highest-intent audiences.
What I did: Built 6 automation flows (welcome, abandoned cart, browse abandon, post-purchase, winback, VIP), segmented the list into 8 engagement-based groups, and redesigned the campaign calendar.
"InboxSpire turned our email list into our highest-converting sales channel. Best ROI of any agency we've hired." — CEO
A UK-based marketing agency had been running cold email for 8 months with a 0.8% reply rate. They'd changed copy a dozen times but never looked at the technical foundation — which was completely broken.
What I did: Full infrastructure rebuild (4 domains, 12 mailboxes), Smartlead reconfiguration, coordinated LinkedIn + email sequences, and copywriting consultation on sequence messaging.
"We wasted 8 months changing copy when the real problem was infrastructure. Naeem fixed it in 3 weeks." — Agency Director
"InboxSpire is a game-changer! Their expertise, personalized campaigns, and excellent support have boosted our email marketing results. Highly recommended!"
"Exceptional service! InboxSpire transformed our outreach strategy. Their targeted approach and creative emails resulted in impressive conversions. Communication was smooth, expertise is unmatched."
"InboxSpire crafted personalized email campaigns that exceeded expectations. The team's expertise, creative designs, and data-driven approach are a winning combination."
"InboxSpire transformed our email campaigns. Creative, data-driven, and superb communication. Highly recommended for effective cold email marketing."
"Kudos to InboxSpire for redefining our email marketing approach! Innovative strategies, compelling content, and tangible results. Highly impressed!"
"If you're serious about elevating your email marketing game, this is the team you need. Their innovative strategies and commitment to real engagement are unmatched."
Start with a free audit — I'll tell you exactly what's wrong before we discuss any paid work.