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.
Once you have 2+ sending servers, the AcelleMail dispatcher distributes per-message across them. This guide explains the rotation logic, how to verify it in the admin pool, and how to override for deterministic routing.
Read more →Going from no DMARC to p=reject all at once breaks your own legitimate mail. The 3-stage migration (none → quarantine → reject) is the safe path. This guide walks the 90-day plan, what to monitor at each stage, when to roll back.
Read more →AcelleMail has no in-app "rotate key" button — a sending domain's DKIM keypair is fixed at creation. To rotate, you delete the domain and re-add it (which generates a fresh key), publish the new DKIM record at your DNS host, then click Veri...
Read more →SES starts at 200/day sandbox, scales to 50k+/day in production, $0.10 per 1,000 emails. This guide is the practical cookbook: how to grow from sandbox to scale, region-by-region orchestration, what AcelleMail does at each tier.
Read more →By default your open- and click-tracking links route through the platform's own domain. Point them at your own subdomain (e.g. track.yourdomain.com) so every link recipients hover looks like yours. This guide walks the real Tracking Domains...
Read more →Gmail, Microsoft, Yahoo, and iCloud each react differently to a brand-new IP. A single uniform warmup curve ramps too fast for the strict receivers and too slow for the forgiving ones. This guide shows how to split warmup by recipient ISP u...
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 →Ubuntu 24.04 LTS ("Noble Numbat") is the recommended host for a 2026 AcelleMail install. PHP 8.3 in universe, MySQL 8.0 from the official repo, supported until April 2029. This guide walks the install end-to-end — from a freshly-provisioned...
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 →Your AcelleMail install works the moment the web installer turns green — but two things now live on your server that didn't before: your subscribers' personal data, and your domain's sending reputation. This checklist secures both, in prior...
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...
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