MTA (Mail Transfer Agent)

Software that sends and routes email between servers. It handles the transfer of outgoing messages across the internet until delivery.

Many ESPs are built on top of popular MTAs like SendGrid or Postmark.

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A

A/B testing

A

AMP for Email

A

API

A

Alt Text

A

Analytics

A

Audience

A

Automations

B

Best practices

B

Blacklist / Blocklist

B

Bounce rate

B

Bounces

C

CAN-SPAM

C

CCPA (California Consumer Privacy Act)

C

CPC (Cost Per Click)

C

CPM (Cost Per Mille)

C

Call to action (CTA)

C

Campaign

C

Campaign editor

C

Churn rate

C

Click rate

C

Click through rate (CTR)

C

Contacts

C

Content

C

Conversion rate (CVR)

C

Custom fields

D

DKIM

D

DMARC

D

Deliverability

D

Delivery rate

D

Double opt-in

D

Drip Campaign

D

Dynamic content

E

ESP

E

Email authentication

E

Email client

E

Engagement

E

Engagement score

E

Export

F

Feedback loop (FBL)

F

Footer

G

GDPR (General Data Protection Regulation)

G

Growth

H

Header

H

Hero image

I

IP address

I

ISP

I

Import

I

Inactive subscriber

I

Inbox placement

I

Integrations

K

Knowledge Base

L

List fatigue

L

List hygiene

M

MTA (Mail Transfer Agent)

M

MX record

M

Manage preferences

M

Migration

M

Monetization

N

Newsletter

O

Open rate

O

Opt in

O

Opt out

P

PTR record (Reverse DNS lookup)

P

Partner Program

P

Permission-based sending

P

Personalization

P

Plain text version

P

Preference center

P

Preheader text

P

Publication

R

RSS feed

R

Re-engagement campaign

R

Rendering

R

Responsive design

R

Retargeting

R

Revenue Per Recipient (RPR)

R

Revenue per email (RPE)

S

SMTP (Simple Mail Transfer Protocol)

S

SPF

S

Safelist

S

Seed list

S

Segments

S

Senders

S

Spam trap

S

Subject line

S

Subscribe forms

S

Subscribers

T

TLS (Transport Layer Security)

T

Template

T

Throttling

T

Transactional email

T

Triggered email

U

URL

U

Unsubscribe

W

Webhooks

W

Welcome email

W

Whitelist