Insights, tips, and best practices for cold email infrastructure and deliverability
Two changes: lower entry point for zero-warmup, higher ceiling for scale. Azure ACS now available on Scale plan, plus add-on accounts for Alpha.
RassamComplete backend rewrite with automated domain setup, spintax support, agency features, and massive scalability improvements. Here's what we've been building and why we had to start over.
RassamWe tested providers claiming 'zero warmup.' Most were reselling Gmail or lying about enterprise infrastructure. Here are the 6 that actually let you send today.
RassamWe spent the last year reverse-engineering how cold email infrastructure actually works. Here's a technical breakdown of architectures, Reddit sentiment analysis, and honest assessment of what it takes to send at 1000+ inbox scale.
RassamRun one campaign for ColdSend inside ColdSend. Get 3 people to subscribe. Keep 30% off forever. Here's how it works.
RassamHow to vet 'no-warmup' cold email providers: four questions that expose marketing lies, plus what we learned automating Azure infrastructure that others charge $2000 to set up manually.
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