Knowledge Base
Step-by-step tutorials for setup and deliverability, deep references for the REST API, and battle-tested playbooks for SaaS, e-commerce, and high-volume sending.
Blast 500k emails at once and you'll throttle yourself: receiving servers tar-pit you, your IP reputation drops, complaint rate spikes. AcelleMail's per-server sending limit lets you pace. This guide walks the UI + 4 throttling patterns by...
Read more →Microsoft's Smart Network Data Services (SNDS) shows per-IP reputation for outlook.com / hotmail.com / live.com. This guide walks the SNDS signup, wiring AcelleMail's sending IPs in, and daily-checking the panel.
Read more →You've set up a custom tracking domain. Now scale it: multiple tracking domains for reputation isolation, HTTPS enforcement, multi-region routing, programmatic verification. This is the advanced companion to the basic setup guide.
Read more →VMC (Verified Mark Certificate) costs $1,500/yr per domain and takes 4-8 weeks to obtain. This guide walks the cost math, the trademark requirements, the alternative paths, and a decision framework for whether VMC is right for your sending...
Read more →Google Postmaster Tools is free. It shows your Gmail-side spam rate, IP reputation, domain reputation, and authentication pass rates. This guide walks the signup, the daily-check routine, and how to wire findings back into AcelleMail.
Read more →Gmail accepts new IPs faster than Microsoft. Yahoo is slower than both. Apple iCloud is the strictest. A uniform warmup misses these per-receiver curves. This guide segments your warmup by recipient ISP for faster reputation building.
Read more →Debian 12 ("Bookworm") is the lightest-weight production host for AcelleMail — same Linux family tree as Ubuntu, fewer pre-installed surprises, supported through 2028 (and through 2033 with Freexian ELTS). This guide covers the three meanin...
Read more →Rocky Linux 9 is the community RHEL 9 rebuild — the right choice when your operations policy requires a Red Hat-family OS without paying for a RHEL subscription. CentOS Stream 9 and AlmaLinux 9 work identically. The four big differences fro...
Read more →DigitalOcean is one of the friendlier ways to run AcelleMail in production — cheap droplets, simple console, and a managed Cloud Firewall that keeps SMTP exposure honest. This guide walks the DigitalOcean-specific bits end-to-end: droplet s...
Read more →AWS EC2 is the right AcelleMail host when (a) you already operate on AWS and want to consolidate, (b) you want SES on the same network plane for sub-millisecond API latency, or (c) you need a specific region/VPC posture. The trade-off vs Di...
Read more →A fresh AcelleMail install is functionally complete the moment the web installer turns green — but it isn't yet production-grade. The default leaves easy-to-fix exposures: SSH password auth on, no fail2ban, no automated backups, no monitori...
Read more →IP warmup is half the story. Your sending domain also accrues reputation independently — and a fresh domain takes 30-60 days to reach full standing at major ISPs. This guide is about the domain side: separate from but interlocking with IP w...
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