Email testing

Ensure every email your product sends reaches the inbox, displays correctly and delivers the right experience. Explore practical guides on testing sign-up confirmations, notifications and other transactional emails – from SMTP basics to end-to-end testing.

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Why emails look so different in different clients?

Email inconsistency across different clients and devices is a common source of frustration for both senders and recipients. This inconsistency can manifest in several ways, leading to emails not appearing in the inbox, content not fully loading, or images not displaying.

MailosaurOctober 31, 2025|
10 minutes
"What is IMAP?" with emails shown on a desktop and a phone

What is IMAP?

IMAP (Internet Message Access Protocol) – a powerful communication protocol shaping modern email management. Learn how IMAP works and explore the key differences between IMAP and POP3.

MailosaurOctober 1, 2025|
9 minutes
"what is SMTP" with an image of email code besides

What is SMTP?

Most people regularly use email services but know little about how emails are delivered from one destination to another. In fact, there’s a lot going on under the hood. In this article, we’ll cover SMTP, which is the main protocol behind sending emails.

MailosaurSeptember 5, 2023|
7 minutes
"How does email really work" with a flowchart showing compose, to SMTP, to SMTP, to DNS lookup, to inbox, to read email

How does email really work?

This article is intended to explain how email works in basic terms, without sounding too technical. Regardless of whether you are a beginner or someone looking to refresh their knowledge, this has got you covered!

MailosaurAugust 30, 2023|
9 minutes
"The psychology of email anxiety" with 2 windows open besides and thoughts represented such as 'did i miss a typo', 'did the link work' and 'did i use the correct image'

The psychology of email anxiety

Overcome fear, build self-confidence, and reclaim control over your email. Learn practical techniques for a healthier relationship with your inbox.

MailosaurJuly 31, 2023|
4 minutes