Definition
Delivery is whether an email arrives in the inbox; rendering is whether it displays correctly. Both matter, and each needs separate testing.
Delivered mail can still render badly, so plan for both outcomes.
Delivery and rendering are separate problems that need separate tests, because delivered mail can still look broken. Seed lists check placement while render tools check appearance. Fixing the right problem saves time and money.
Testing Both
Separate delivery checks from visual QA.
Track both with distinct tooling and metrics.
Why It Matters
Delivery and rendering are separate problems that need separate tests. Understanding the distinction prevents fixing the wrong thing.
Best Practices
- Separate delivery checks from visual QA.
- Track both with distinct tooling and metrics.
- Fix issues in whichever stage they appear.
- Use seed lists for delivery and render tools for appearance.
- Prioritise delivery first, then rendering.
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Related Glossary Terms
Abuse Complaint
An abuse complaint is a report from a recipient who marks an email as spam, which negatively affects sender reputation and deliverability.
Alt Text
Alt text is the written alternative to an image in an email, displayed when images are blocked, slow to load, or consumed by screen readers.
AOL Mail for Email Marketers
AOL Mail is a legacy email provider with specific deliverability requirements and rendering quirks, now operating as part of the Yahoo+AOL network under shared infrastructure.
Email Authentication Protocols
Email authentication protocols are technical standards that verify the identity of an email sender, helping mailbox providers distinguish legitimate mail from spam and phishing.
BIMI
BIMI (Brand Indicators for Message Identification) is an email standard that allows brands to display their logo next to their emails in supported email clients. It requires DMARC enforcement at quarantine or reject policy.
Bounce Management
Bounce management is the process of handling emails that are rejected by mailbox providers, including classification, removal of bad addresses and protection of sender reputation.
Frequently Asked Questions
Delivery is getting mail in; rendering is displaying it well. Delivery and rendering are separate problems that need separate tests, because delivered mail can still look broken.
Each needs different tools and fixes. Seed lists check placement while render tools check appearance.
Both, but in sequence: nothing works if not delivered. Fixing the right problem saves time and money.
Yes, commonly. Delivery and rendering are separate problems that need separate tests, because delivered mail can still look broken.
Seed lists for delivery; render tools for appearance. Seed lists check placement while render tools check appearance.