Custom Tracking Domain for Click URLs
Replace AcelleMail's default tracking domain with your own branded domain using a CNAME record and an SSL certificate.
#Tls
Articles tagged with "Tls"
Articles tagged #Tls
How Email Delivery Actually Works
Follow a single email from your "Send" button to the recipient's inbox — covering MTA handoff, SMTP conversation, DNS MX lookup, and TLS negotiation.
More from the Knowledge Base
Discover more tutorials, guides, and references.
Zapier Integration Guide
Connect AcelleMail to 5,000+ apps via Zapier — set up triggers, actions, and common automation use cases.
Understanding Email Bounce Types
Hard bounces and soft bounces behave very differently. Learn the SMTP codes behind each type and how AcelleMail handles them to protect your sender reputation.
Understanding Email Open Rates in the Age of Apple MPP
Apple Mail Privacy Protection inflates open rates by pre-fetching images. Learn what MPP is, how it affects your data, and which metrics to focus on instead.
Return-Path and Envelope Sender Explained
The Return-Path header controls where bounce notifications go. Learn how it differs from the From address and why alignment matters for DMARC.
Bulletproof CTA Buttons for Outlook
Create CTA buttons that render in every email client including Outlook, using VML and hybrid CSS.
GDPR Compliance Guide for Email Marketing
Everything you need to know about GDPR compliance when using AcelleMail for email marketing in the EU.
Email Template Design Best Practices
Design responsive, accessible email templates that look great across all devices and email clients.
DNS Propagation Explained
DNS changes don't take effect immediately. Understand TTL, caching, and how to verify propagation has completed worldwide.
How to Set Up SPF, DKIM, and DMARC Records
Complete guide to configuring email authentication DNS records for maximum deliverability.
Email Queue Architecture in AcelleMail
Understand how AcelleMail breaks campaigns into queue jobs, processes them with workers, handles retries, and tracks delivery status.
Server Requirements and Hosting Options
What you need to run AcelleMail — from shared hosting to cloud VPS, with detailed specifications.
Configuring Multiple Sending Servers
Use a pool of sending servers to distribute campaign load, achieve IP rotation, and set up automatic failover when one server goes down.