Glossary

A
A/B Testing Signatures
Accessibility
Alias
Alt Text
Analytics
Anchor Text
Animated GIFs
API
Apple Mail
ARC (Authenticated Received Chain)
Archive
Archiving
Assignment
Attachments
Authentication
Auto-Responder
Automatic Insertion
B
Background Images
Backscatter
Banner Image
Base64 Encoding
Bayesian Filtering
BIMI (Brand Indicators for Message Identification)
Blacklist (or Blocklist)
Block
Bounce
Brand Consistency
Bulk Updates
C
Caching
Calendar
Call-to-Action
Catch-All Email Address
Categories (Outlook)
Centralized Deployment
Centralized Signature Deployment
Centralized Signature Management
Change Logs
Click Tracking
Color Psychology
Compliance
Compose
Confidential Mode (Gmail)
Contact Information
Contacts
Content Insertion
Conversation View
CRM Integration
Cross-Border Compliance
CTA
D
DANE (DNS-based Authentication of Named Entities)
Dark Mode
Dark Mode Compatibility
Delegation
Delimiter
Deliverability
Deployment
Device-Specific Analytics
Digital Business Card Regulations
Disclaimer
DKIM (DomainKeys Identified Mail)
DMARC (Domain-based Message Authentication, Reporting & Conformance)
DNS (Domain Name System)
Dynamic Content Insertion
Dynamic Email Signature
E
Editor
Email Client
Email Client Link Rendering
Email Client Rendering Differences
Email Disclaimer
Email Encryption
Email Header
Email Link Validation
Email Marketing Platform Compatibility
Email Recall
Email Retention Policy
Email Scheduling
Email Signature
Email Signature Management
Email Spoofing
Email Threading
Engagement Rate
Envelope Sender
F
File Attachment Signature
Filters
Focused Inbox (Outlook)
Folders
Font Fallbacks
Forward
G
GDPR Compliance
Generator
Gmail
Greylisting
Group Policy
Group Policy Deployment
H
Header: BCC (Blind Carbon Copy)
Header: CC (Carbon Copy)
Header: Content-Transfer-Encoding
Header: Content-Type
Header: Date
Header: From
Header: List-Unsubscribe
Header: Message-ID
Header: MIME-Version
Header: Precedence
Header: Received
Header: Reply-To
Header: Return-Path
Header: Subject
Header: To
Header: X-Headers
Heat Mapping
Hierarchy
HTML Signature
HTML Support
Hyperlink
I
Image Blocking
Image Caching
Image Compression
Image Fallback
Image Hosting
Image Maps
Image-to-Text Ratio
IMAP
Importance Markers
Inbox
Industry-Specific Certifications
Industry-Specific Regulations
Inline CSS
Inline Image Insertion
Interactive Elements
L
Labels (Gmail)
Link Accessibility
Link Attribution
Link Expiration
Link Preview
Link Shortening
Link Visibility
List Hygiene
Load Time
Localization
M
Mail Exchanger (MX) Record
Mail Queue
Mailbox
MDA (Mail Delivery Agent)
Microsoft Outlook
MIME Type
Mobile-Friendly Signature
Mozilla Thunderbird
MTA (Mail Transfer Agent)
MTA-STS (SMTP MTA Strict Transport Security)
MUA (Mail User Agent)
Multiple Signatures
O
Open Relay
Opt-Out Link
Out of Office
Outlook
Outlook Email Client
P
Performance Metrics
Phishing
Phishing Links
Plain Text Signature
POP3 (Post Office Protocol version 3)
Q
Quick Parts (Outlook)
R
Read Receipts
Redirect Links
Remote User Signature Management
Reply
Responsive Signature
Responsiveness
Retina Display Optimization
Retina Images
Reverse DNS
Rich Text Formatting
Rotation
S
S/MIME (Secure/Multipurpose Internet Mail Extensions)
Scheduling
Search
Security Warning
Separator
Signature
Signature Etiquette
Signature Fields
Signature Length
Signature Settings
Size Limit
Smart Compose
SMTP
SMTP (Simple Mail Transfer Protocol)
SMTP AUTH
Snooze
Social Media Icons
Spam Filter
SPF (Sender Policy Framework)
Sweep (Outlook)
T
Tagging
Tasks
Template Library
Templates
Thunderbird
TLS (Transport Layer Security)
Tracking Links
U
Undo Send
URL (Uniform Resource Locator)
User Permission Levels
V
vCard
Versioning
Visibility
W
White Space Management
Whitelist (or Allowlist)
SHIFTSIG logo (black)

Made and hosted in the EU 🇪🇺
Built with ❤️ in Munich

Solely funded by our subscribers.

Legalese

Support

Policies & Compliance

Sign up