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You’re an email provider, marketing platform, or brand with multiple business units.
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smtp or imap

SMTP or IMAP: What’s the Difference? [Bonus: What is POP3?]

Today you’re going to learn exactly whether you should be using SMTP or IMAP. In fact, there is a major difference between the two protocols. In this article, we’ll help you understand the differences between SMTP and IMAP. We’ll also briefly touch on POP3. Let’s get started. What is SMTP? What is IMAP? What Is […]
What’s An SMTP Relay? [A Brief Crash Course]

What Is an SMTP Relay [A Brief Crash Course]

Wondering what is an SMTP Relay? In this article, you’ll get a brief crash course on SMTP. So what does SMTP stand for? It means Simple Mail Transfer Protocol and it is…

by SocketLabs Team - February 15, 2021
smtp response codes

21 SMTP Response Codes That You Need To Know

Use these 21 Common SMTP Response Codes to determine why an email bounced, or why you’re receiving an SMTP error when sending email…

by SocketLabs Team - January 26, 2021
Transactional email CAN-SPAM

Transactional Email & CAN-SPAM: Is Transactional Email Exempt?

The CAN-SPAM Act is a US law which establishes standards for sending commercial email. But what about Transactional Email & CAN SPAM? In this post you’ll…

by SocketLabs Team - January 16, 2021
SMTP Monitoring

SMTP Monitoring: How to Monitor Delivery Errors with Email Monitoring Tools

What is SMTP Monitoring? Learn all you need to know about how to specifically monitor your email delivery errors and message failures.

by SocketLabs Team - April 29, 2019
smtp email delivery

SMTP Email Delivery 101: When Is An Email Actually Considered Delivered?

Today you’re going to learn about SMTP and email delivery — exactly when an email is actually considered delivered. Ready? Let’s go…

by SocketLabs Team - April 11, 2019

Effective Transactional Email Design: The Anatomy of a Receipt Email

What does an effective transactional email design look like? In this post, you’ll learn how to create an an effective transactional receipt email that…

by SocketLabs Team - April 4, 2019
setup smtp gmail

How to Set up SMTP in Gmail: Do You Know the Limits?

Looking to setup SMTP in Gmail? For most small senders, Gmail SMTP is a quick setup. However, Gmail’s SMTP server comes with serious limitations…

by SocketLabs Team - March 28, 2019
what is telnet

How to Test SMTP Relay Server Connection Issues With This Powerful Telnet Alternative

Get step by step instructions on how to test your SMTP relay connection with SocketLabs’ telnet alternative.

by SocketLabs Team - March 28, 2019
transactional email GDPR

Transactional Email GDPR Rules: Can You Send Transactional Email Without Consent?

Under GDPR do you need consent to deliver transactional emails to EU citizens? Find out in this post about Transactional Email and GDPR…

by SocketLabs Team - March 15, 2019