Knowledge Base

Everything you need to run AcelleMail in production.

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.

Latest articles

Troubleshooting

My Campaign Is Stuck in "Sending" — What to Check

A campaign that still shows "Sending" hours after you hit send. Walk through the three UI signals that tell you what's actually happening — then the two-click fix that resolves it for most teams.

May 19, 2026 5 min read Beginner Acellemail 7 27

Troubleshooting

Decoding Bounce Messages — Read the Tracking Log Like a Pro

Hard bounces, soft bounces, deferred — what AcelleMail's bounce log is actually telling you, and which bounces you can ignore vs. which need action. Read the UI first, dive into the SMTP codes only when needed.

May 19, 2026 2 min read Beginner Acellemail 6 23

Migration & Comparison

ActiveCampaign → AcelleMail Migration — Visual Walkthrough

Export contacts from ActiveCampaign, import into AcelleMail in 6 clicks. UI walkthrough plus optional API migration for large accounts.

May 19, 2026 2 min read Beginner Acellemail 3 9

Migration & Comparison

Klaviyo → AcelleMail Migration — Visual Walkthrough

Export your Klaviyo profiles as CSV, import into AcelleMail via the 6-click wizard. Visual walkthrough plus power-user API path for large Klaviyo accounts.

May 19, 2026 2 min read Beginner Acellemail 2 9

Troubleshooting

My Emails Are Landing in Spam — UI-First Diagnostic

Spam-folder placement happens for measurable reasons. Walk the Insights page, the Sending Server config, and the Test diagnostic — three UI checks isolate the cause before anyone has to look at headers.

May 19, 2026 5 min read Intermediate Acellemail 5 18

Email Infrastructure

Choosing the Queue Driver: Database vs Redis vs SQS for AcelleMail

AcelleMail ships with `QUEUE_CONNECTION=database` as the default — and that's the right choice for installations up to ~500k emails per day. Past that threshold, database-queue contention starts to dominate worker time, and switching to Red...

May 19, 2026 12 min read Advanced Acellemail 8 15

Developer Guide

AcelleMail Webhook Signature Verification and Replay Protection

When you receive a webhook from AcelleMail (or AcelleMail receives one from a third-party event source like Meta), the receiver has no built-in trust that the request came from where it claims. This guide walks the HMAC-SHA256 signature ver...

May 19, 2026 11 min read Advanced Acellemail 5 15

Migration & Comparison

MailerLite → AcelleMail Migration — Visual Walkthrough

Export subscribers from MailerLite, import into AcelleMail in 6 clicks. Visual walkthrough on both sides with API-driven option for large lists.

May 19, 2026 1 min read Beginner Acellemail 2 8

Email Design & Content

Email Accessibility: WCAG Best Practices for Bulk Email

Roughly 15% of your subscribers have a permanent or situational disability that affects how they read email — screen reader users, low-vision readers, color-blind users, motor-impaired clickers, cognitive-load-sensitive readers. The Europea...

May 19, 2026 14 min read Intermediate Acellemail 2 7

Migration & Comparison

ConvertKit (Kit) → AcelleMail Migration — Visual Walkthrough

Export subscribers from ConvertKit (now Kit), import into AcelleMail in 6 clicks. Visual walkthrough on both sides with API-driven option.

May 19, 2026 1 min read Beginner Acellemail 3 10

Migration & Comparison

Brevo (Sendinblue) → AcelleMail Migration — Visual Walkthrough

Export contacts from Brevo, upload to AcelleMail in 6 clicks. UI walkthrough on both sides plus optional API-driven migration for large lists.

May 19, 2026 2 min read Beginner Acellemail 3 7

Troubleshooting

My Automation Isn't Triggering — How to Diagnose from the UI

A welcome series or drip that won't fire on new subscribers. The Automations dashboard shows you whether the workflow is active, what trigger it's listening for, and which subscribers are eligible — three checks resolve most cases.

May 19, 2026 4 min read Beginner Acellemail 2 10

Everything you need to run AcelleMail in production.

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Latest articles

My Campaign Is Stuck in "Sending" — What to Check

Decoding Bounce Messages — Read the Tracking Log Like a Pro

ActiveCampaign → AcelleMail Migration — Visual Walkthrough

Klaviyo → AcelleMail Migration — Visual Walkthrough

My Emails Are Landing in Spam — UI-First Diagnostic

Choosing the Queue Driver: Database vs Redis vs SQS for AcelleMail

AcelleMail Webhook Signature Verification and Replay Protection

MailerLite → AcelleMail Migration — Visual Walkthrough

Email Accessibility: WCAG Best Practices for Bulk Email

ConvertKit (Kit) → AcelleMail Migration — Visual Walkthrough

Brevo (Sendinblue) → AcelleMail Migration — Visual Walkthrough

My Automation Isn't Triggering — How to Diagnose from the UI

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Run your email marketing on your own server, your own terms

Most read

Latest articles

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Run your email marketing on your own server, your own terms

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