# Learning Center

Source: https://wraps.dev/learning

Everything Wraps has on email authentication, deliverability, and infrastructure — glossary terms, deep guides, and the tools that check each one, organized by topic.

## Authentication

The mechanisms a receiver checks to decide whether mail claiming to be from your domain actually is.

-   [SPF (Sender Policy Framework)](https://wraps.dev/glossary/spf)
-   [DKIM (DomainKeys Identified Mail)](https://wraps.dev/glossary/dkim)
-   [DMARC (Domain-based Message Authentication, Reporting & Conformance)](https://wraps.dev/glossary/dmarc)
-   [BIMI (Brand Indicators for Message Identification)](https://wraps.dev/glossary/bimi)
-   [MTA-STS (SMTP MTA Strict Transport Security)](https://wraps.dev/glossary/mta-sts)
-   [TLS-RPT (SMTP TLS Reporting)](https://wraps.dev/glossary/tls-rpt)
-   [DKIM selector](https://wraps.dev/glossary/dkim-selector)
-   [DMARC alignment](https://wraps.dev/glossary/dmarc-alignment)
-   [Return-path](https://wraps.dev/glossary/return-path)

### Further reading

-   [SPF record guide](https://wraps.dev/blog/spf-guide)
-   [What changes under DMARCbis](https://wraps.dev/blog/dmarcbis-what-changes)
-   [Why your DMARC policy might be useless](https://wraps.dev/blog/your-dmarc-policy-is-useless)
-   [SPF record builder (tool)](https://wraps.dev/tools/spf-builder)

## Deliverability

What happens to a message after it authenticates — whether it bounces, gets reported, or actually lands.

-   [Soft bounce](https://wraps.dev/glossary/soft-bounce)
-   [Hard bounce](https://wraps.dev/glossary/hard-bounce)
-   [Complaint rate](https://wraps.dev/glossary/complaint-rate)
-   [Spam trap](https://wraps.dev/glossary/spam-trap)
-   [Blocklist (DNSBL)](https://wraps.dev/glossary/blocklist)
-   [IP warming](https://wraps.dev/glossary/ip-warming)
-   [Dedicated IP](https://wraps.dev/glossary/dedicated-ip)
-   [Shared IP](https://wraps.dev/glossary/shared-ip)
-   [Inbox placement](https://wraps.dev/glossary/inbox-placement)
-   [Feedback loop (FBL)](https://wraps.dev/glossary/feedback-loop)
-   [List-Unsubscribe](https://wraps.dev/glossary/list-unsubscribe)

### Further reading

-   [SES bounce rate: thresholds and fixes](https://wraps.dev/ses/bounce-rate)
-   [SES complaint rate](https://wraps.dev/ses/complaint-rate)
-   [Landing in the spam folder](https://wraps.dev/ses/spam-folder)
-   [Account under review](https://wraps.dev/ses/account-under-review)
-   [How email actually works](https://wraps.dev/blog/how-email-works)

## Infrastructure

The AWS SES resources and protocols that carry a send from an application to a recipient's mail server.

-   [SMTP relay](https://wraps.dev/glossary/smtp-relay)
-   [MX record](https://wraps.dev/glossary/mx-record)
-   [Configuration set](https://wraps.dev/glossary/configuration-set)
-   [Suppression list](https://wraps.dev/glossary/suppression-list)
-   [Sending quota](https://wraps.dev/glossary/sending-quota)
-   [Message-ID](https://wraps.dev/glossary/message-id)

### Further reading

-   [SES sending limits](https://wraps.dev/ses/limits)
-   [SES sandbox guide](https://wraps.dev/blog/ses-sandbox-guide)
-   [SES production architecture](https://wraps.dev/blog/ses-production-architecture)
-   [AWS account setup](https://wraps.dev/docs/guides/aws-setup)
-   [SES pricing calculator (tool)](https://wraps.dev/tools/ses-calculator)
-   [SES error reference](https://wraps.dev/ses/errors)

## Compliance

The consent and disclosure rules that decide whether you were allowed to send the message at all.

-   [Double opt-in](https://wraps.dev/glossary/double-opt-in)
-   [CAN-SPAM Act](https://wraps.dev/glossary/can-spam)
-   [GDPR consent](https://wraps.dev/glossary/gdpr-consent)

## Metrics

The numbers senders watch, and where they quietly stop meaning what they used to.

-   [Open rate](https://wraps.dev/glossary/open-rate)