Real Senders.
Real Infrastructure.
Real Numbers.

"Our promotional emails had been deteriorating for two years. We'd tried everything on the sending side — subject line testing, send time optimization, list cleaning. None of it fixed the underlying problem, which was that we were sharing IP space with senders we had no control over. Moving to dedicated infrastructure and a structured warm-up was the only thing that actually worked. Gmail placement went from 58% to 94% over six weeks."

"We send about 4 million emails per month across promotional, cart abandonment, and post-purchase flows. Before switching to dedicated infrastructure, our cart abandonment emails had a delivery rate of around 78% — acceptable, we thought, until we started measuring what 22% suppression meant in recovered revenue. After switching and warming our own IP pools, delivery hit 96.2% and our revenue per email from abandonment flows jumped 44%. That number pays for the infrastructure many times over."

"Black Friday is our Super Bowl. Last year we had a significant deliverability event the week before — our shared IP pool was flagged by Spamhaus because of another sender on the same infrastructure. We lost three sending days during our most critical window. This year, with dedicated IPs and active blacklist monitoring, we sent 1.2 million emails over Black Friday weekend without a single deliverability incident. Open rates were up 28% year-over-year. The peace of mind alone is worth it."

"We have enterprise clients in HR and payroll — industries where regulatory notifications, payslip distributions, and audit confirmations absolutely cannot miss the inbox. When we were on a shared sending platform, we had months where 8–12% of those critical emails were deferred or filtered. That meant compliance risk for our clients. After moving to Cloud Server for Email with a dedicated transactional IP pool and MTA-STS enforcement, our delivery rate for regulatory notifications is now 99.6%. Support tickets related to email non-delivery dropped 67% in the first quarter. For us, this is a compliance issue resolved, not just a marketing metric."

"Outlook was our nightmare. We have a large enterprise customer base in financial services and professional services — industries heavily using Microsoft 365. Our notification emails were consistently landing in Junk for these users. We tried warming a new domain, adjusting content, working with our ESP's support team. Nothing changed the underlying SNDS score. When we moved to Cloud Server for Email with a dedicated IP pool, a clean sender reputation starting from zero, and their active Microsoft SNDS monitoring, our Outlook delivery rate went from 71% to 98% in five weeks. Enterprise customer satisfaction scores related to notifications improved measurably in the next NPS cycle."

"We manage email for 34 client brands across retail, hospitality, and financial services. The main reason we moved to dedicated infrastructure was isolation — a bad campaign from one client was contaminating the sender reputation for others. With separate IP pools per client risk profile, we now guarantee our clients a deliverability floor that we couldn't offer before. We've also been able to show clients Postmaster Tools data as part of our reporting, which has significantly improved the perceived value of our service. Client retention improved 18% in the year after the switch — not entirely due to email, but email reliability was cited in three of the five renewal conversations that previously would have been lost."

"We publish five newsletters with a combined readership of 280,000 active subscribers. Our business model depends entirely on open rates — advertisers pay for eyeballs, and if our emails land in spam, that's direct revenue loss. We had been growing our list while seeing engagement metrics decline, which is the classic sign of a deliverability problem. After switching to dedicated sending infrastructure with proper DKIM, DMARC enforcement, and Gmail Feedback Loop monitoring, our average open rate went from 28% to 41% in three months. That's not growth from new subscribers — that's the same list, with emails actually reaching people. The revenue impact was immediate."

"Cold email has a different risk profile than marketing email, and you cannot mix the two on the same infrastructure without eventually damaging both. We needed an infrastructure partner who understood that distinction — separate IP pools, separate domains, separate warm-up schedules, and active monitoring so that any reputation event on the cold side doesn't touch our client's warm transactional stream. Cloud Server for Email was the first provider we found who had a documented approach to this separation. Eighteen months in, we've had zero cross-contamination events. That's the metric that matters."

"In payments, a transaction notification that goes to spam is a customer service call, a potential fraud dispute, and a regulatory compliance question. We process over 800,000 payment notifications per month. Before moving to dedicated infrastructure, our delivery rate for payment alerts was approximately 94%. After the migration — and more importantly, after working through the IP warming process with a team that understood the urgency of transactional reliability — our delivery rate for payment notifications is 99.8%. We've measured a direct reduction in inbound support calls related to 'I didn't receive my confirmation email' of about 40%. That's thousands of avoided support interactions per month."

"We operate under strict regulatory requirements in insurance. Our policy documents, renewal notices, and claims correspondence must be delivered, and we need to be able to demonstrate delivery attempts for compliance purposes. We chose Cloud Server for Email specifically because they operate EU-based infrastructure with GDPR-compliant data handling, maintain detailed delivery logs we can access, and provide the kind of uptime SLA documentation that our compliance team requires. The technical quality is excellent, but what actually closed the decision was the fact that they understood our compliance requirements without us having to explain them from scratch."

"The migration from Mailchimp was smoother than I expected. We moved 1.1 million subscribers in segments across a six-week warm-up. The main difference was that we were actually in control — we could see exactly which IPs were used for which segments, and we had real-time data rather than waiting for Mailchimp's next-day reporting. The first campaign after full warm-up had a 34% open rate. That was the number that told us the migration had worked."

"We had been on SendGrid for four years and the platform itself was fine, but we were growing past the point where shared infrastructure made sense. We were sending 12 million emails per month and having no visibility into whose reputation we were sharing. The migration was technically straightforward — our developers had the new SMTP credentials integrated in two days. The IP warming took five weeks. SendGrid's advantage is convenience; dedicated infrastructure's advantage is control. At our volume, control is worth more."

"We chose SES originally for the price, but the tradeoff was that we were completely on our own for deliverability. No monitoring, no warming guidance, no one to call when things went wrong — and things did go wrong. Moving to managed dedicated infrastructure cost more per month but eliminated the invisible cost of deliverability failures. The team at Cloud Server for Email monitored our IP warm-up daily and adjusted our sending schedule three times based on Postmaster Tools signals. That kind of active management is exactly what SES doesn't offer."