Mailtrap Blog: The Best Content About Emails

Top Email Sending and Testing Resources

Email Deliverability Audit: A Step-by-Step Guide

On July 14, 2025

10min read

Your go-to guide for performing an email deliverability audit. Learn why, when, and how to perform one.

Ivan Djuric

Technical Content Writer @Mailtrap

+1 more author

Microsoft SNDS: Learn How to Improve Outlook Email Deliverability

On July 14, 2025

7min read

Learn everything you need to know about Microsoft SNDS: from setting it up to using its dashboard to improve your email deliverability.

Ivan Djuric

Technical Content Writer @Mailtrap

+1 more author

EmailJS React: How to Send Emails From a Contact Form Without a Backend

On July 07, 2025

11min read

In this EmailJS React tutorial, I will show you how to send emails from your React contact form or app […]

Artem Litvinenko

Software Engineer

+1 more author

ESP Migration Guide for SaaS and Product-Based Companies

On July 07, 2025

9min read

A step-by-step tutorial on ESP migration: learn how to change an email service provider without hurting email deliverability.

Daria Roshchyna

Technical Content Writer @Mailtrap

Email marketing strategy displayed as a map

How to Creat Email Marketing Strategy & An Overview of Ready-to-Use Strategies

On July 03, 2025

19min read

Learn how to create an email marketing strategy and find a list of proven ready-to-use email marketing strategies.

Ketevan Bostoganashvili

Technical Content Writer @Mailtrap

+1 more author

Google Postmaster Tools: Learn How To Improve Gmail Email Deliverability

On July 03, 2025

11min read

Learn how to set up Google Postmaster Tools and find out how to use its different dashboards.

Ivan Djuric

Technical Content Writer @Mailtrap

+1 more author

Load More Posts

EmailJS React: How to Send Emails From a Contact Form Without a Backend

On July 07, 2025

11min read

In this EmailJS React tutorial, I will show you how to send emails from your React contact form or app […]

Artem Litvinenko

Software Engineer

+1 more author

How to Send Emails Client-Side: A Developer’s Tutorial to EmailJS

On July 02, 2025

11min read

Learn how to send emails from your contact form or app via EmailJS or by using other reliable alternatives!

Artem Litvinenko

Software Engineer

+1 more author

This image is a symbolic graphic representation of email list growth for an article that covers the topic in detail.

Email List Growth Explained: Here’s 10 Steps You Have to Take

On May 21, 2025

12min read

Learn how to grow your email list: an overview of the most effective strategies with step-by-step implementation guide.

Oleksii Ianchuk

Product Lead @ Mailtrap

How to Send Emails in a Lovable React App Using EmailJS

On May 20, 2025

13min read

In this step-by-step guide, we’ll prompt Lovable to create a React app and send emails from it using EmailJS and Mailtrap SMTP. Sending cases we’ll be covering include plain-text and HTML emails, multiple recipients, and emails with attachments.

Artem Litvinenko

Software Engineer

+1 more author

How to Send Emails in a Replit App

On May 18, 2025

14min read

In this step-by-step guide, we’ll prompt Replit to create a React app and send emails from it using EmailJS and Mailtrap SMTP. Sending cases we’ll be covering include plain-text and HTML emails, multiple recipients, and emails with attachments.

Artem Litvinenko

Software Engineer

+1 more author

How to Send Emails in Next.js using Client & Server-Side Methods: A Complete Guide

On May 08, 2025

20min read

Follow along and set up a Next.js project, then send emails either via client-side or server-side!

Artem Litvinenko

Software Engineer

+1 more author

Load More Posts

This is a featured image for blog post on subject line testers

6 Subject Line Testers Tried & Compared: Here’s What I Found

On May 30, 2025

9min read

I’ve compared 5 subject line testers based on quality of results, ease of use, price, features, and more - find out what works best for you.

Yevhenii Odyntsov

Content @Mailtrap

How to Test Email Deliverability: Process & Toolkit Explained

On March 24, 2025

12min read

Poor deliverability can cause some serious problems. Luckily, there are various free and paid tools for testing emails.

Piotr Malek

Technical Content Writer @ Mailtrap

+1 more author

This is a graphic representation of an email blacklist, for an article that covers the topic in detail.

Email Blacklists Explained: Causes, Solutions, Prevention

On January 24, 2025

9min read

Find out what an email blacklist is, how it works, what are the reasons to get blacklisted, and how to get off the blacklist and avoid it in the future.

Dzenana Kajtaz

Technical Content Writer @Mailtrap

Email Client Testing Explained

On September 02, 2024

11min read

Learn how to test emails in different email clients using Mailtrap, Litmus, Email on Acid, and more.

Diana Lepilkina

Content Specialist @Mailtrap

+1 more author

SMTP Server for Testing: Cloud-based or Local?

On August 27, 2024

5min read

How would you approach choosing an SMTP server for testing? Find the key factors to consider in this blog post.

Yevhenii Odyntsov

Content @Mailtrap

How to Automate Email Verification in Selenium

On August 09, 2024

9min read

Selenium can be a great tool for testing your email verification process. We describe how to set everything up in a few simple steps.

Aleksandr Varnin

Full Stack Developer @ Railsware

Load More Posts

ESP Migration Guide for SaaS and Product-Based Companies

On July 07, 2025

9min read

A step-by-step tutorial on ESP migration: learn how to change an email service provider without hurting email deliverability.

Daria Roshchyna

Technical Content Writer @Mailtrap

This is a featured image for an article on IP pools

What Are Email IP Pools and Why Should You Use Them for Higher Email Deliverability

On June 20, 2025

10min read

Find out what email IP pools are, and master why, when, and how to use them to improve your email deliverability.

Dzenana Kajtaz

Technical Content Writer @Mailtrap

+1 more author

How to Choose Email Service Provider: Actionable Q&A Guide

On May 15, 2025

13min read

Learn how to choose an email service provider: breakdown of choosing criteria and tutorial on how to approach the selection. Click here.

Yevhenii Odyntsov

Content @Mailtrap

SMTP Providers Compared: Choose the Best One for Sending Transactional and Marketing Emails

On April 30, 2025

12min read

We compared 7 SMTP providers to find the best option for sending transactional and marketing emails. You can see the results here.

Denys Velykozhon

Marketing Lead @Railsware

+1 more author

This is a symbolic graphic representation of AI email personalization for an article that covers the topic indetail.

AI Email Personalization: Examples, Benefits, and Best Practices

On March 11, 2025

7min read

AI email personalization helps you to send tailored messages at scale, increasing conversions and generating customer insights. Here's how to use it.

Cohere

What is an ESP or Email Service Provider? A Beginner’s Guide

On March 05, 2025

8min read

Find out what is an ESP or email service provider, how it differs from an email provider, get a list of popular ESPs, and learn how to choose a suitable provider.

Daria Roshchyna

Technical Content Writer @Mailtrap

Load More Posts

HTML Character Entities: NBSP and HTML Spaces Explained

On February 04, 2025

10min read

&nbsp, or non-breaking space, is an HTML character used to create a space. We analyze when to use it and when to opt for other solutions.

Ivan Djuric

Technical Content Writer @Mailtrap

+1 more author

This image is a symbolic graphic representation of building HTML email template for an article that covers it in detail.

Responsive HTML Email Template Development: A Step-by-Step Guide for Email Developers

On December 20, 2024

10min read

Learn how to develop a custom responsive HTML email template from scratch that renders perfectly in every email client.

Veljko Ristić

Content Manager @Mailtrap

This image is a graphic representation of html vs plain text emails for an article that covers the topic in detail.

HTML vs Plain Text Email: What to Choose For Your Next Email Campaign?

On July 30, 2024

8min read

HTML vs plain text emails compared on performance, deliverability, ROI, and more! Click here to learn the details and decide on your next email campaign.

Veljko Ristić

Content Manager @Mailtrap

This image is a graphic representation of HTML email for an article that covers the topic in detail

HTML Email: A Complete Tutorial for Email Marketers, Designers, and Developers

On July 10, 2024

20min read

Learn what HTML email is, how to create HTML email from scratch or using templates and builders, best practices, and role of HTML in email deliverability.

Veljko Ristić

Content Manager @Mailtrap

Complete Tutorial on Mailto Links: What They Are & How to Use Them

On June 13, 2024

7min read

You can customize mailto links in many ways. We describe them all, give examples, and discuss whether mailto is the right approach.

Yevhenii Odyntsov

Content @Mailtrap

Here’s How You Add an Animated GIF to Your Email Signature

On May 25, 2024

7min read

Looking for ways to make your emails pop? This guide will show you how to add an animated GIF to your email signature.

Yevhenii Odyntsov

Content @Mailtrap

Load More Posts

How to Creat Email Marketing Strategy & An Overview of Ready-to-Use Strategies

On July 03, 2025

19min read

Learn how to create an email marketing strategy and find a list of proven ready-to-use email marketing strategies.

Ketevan Bostoganashvili

Technical Content Writer @Mailtrap

+1 more author

This graphic is a symbolic representation of B2B email marketing for an article that covers the topic in detail.

B2B Email Marketing: A Go-to Guide for Businesses

On June 12, 2025

17min read

Your go-to guide for B2B email marketing: what it is, benefits, how to do it the right way, and send your first campaign!

Ivan Djuric

Technical Content Writer @Mailtrap

This image is a symbolic graphic representation of email list building tools for an article that covers the topic in detail.

I’ve Tested 6 Email List Building Tools And Here’s What I Found

On June 06, 2025

15min read

I’ve tested 6 best email list building tools on pricing, features, customer feedback, and more. Find out the best solution to grow your email list.

Yevhenii Odyntsov

Content @Mailtrap

What Is an Email List and How to Build One Right

On June 04, 2025

16min read

Your step-by-step guide on email lists: what they are, how to build one, best practices, and more!

Ivan Djuric

Technical Content Writer @Mailtrap

This image is a symbolic graphic representation of a email list cleaning for an article that covers the topic in detail.

Email List Cleaning: Personal Insights On Ensuring High Email Deliverability

On June 03, 2025

12min read

Learn what email list cleaning is and how to keep a clean email list: approaches, a step-by-step guide, and best practices

Oleksii Ianchuk

Product Lead @ Mailtrap

7 Mass Email Services Reviewed & Compared: Here’s What I Found

On May 23, 2025

27min read

We reviewed 7 mass email service providers based on features, pricing, and other criteria to find out which one is the best. Check the results here.

Ketevan Bostoganashvili

Technical Content Writer @Mailtrap

Load More Posts

Let Your AI Agent Send Emails: Mailtrap MCP Server is Now Live!

On April 26, 2025

1min read

Find out what Mailtrap's very own MCP server can do if you leverage it with your AI IDE or personal AI assistant!

Ivan Djuric

Technical Content Writer @Mailtrap

Now You Can Send Targeted Campaigns with Mailtrap Contacts

On October 21, 2024

1min read

You can now use Mailtrap Contacts & Lists to organize your contacts into lists and send targeted campaigns. Learn more here.

Ketevan Bostoganashvili

Technical Content Writer @Mailtrap

New email templates with drag and drop builder

Improved Templates with Drag-and-Drop Editor, Simplified Integration Flow, and More

On July 03, 2024

2min read

Mailtrap extends Templates features with a new visual builder, easier integrations, and more. Learn what’s new here.

Ketevan Bostoganashvili

Technical Content Writer @Mailtrap

Mailtrap robot holds a certificate to indicate Mailtrap acquiring ISO certification

Mailtrap Is Now ISO Certified

On April 10, 2024

2min read

Mailtrap can now certify that we handle all the development processes in accordance with ISO standards. Learn what this means in this article.

Ketevan Bostoganashvili

Technical Content Writer @Mailtrap

Now Mailtrap Customers Can Test Email Templates via API

On March 26, 2024

2min read

We’ve introduced Email Testing API for Email Templates. Learn what this means and get all the information about its benefits here.

Ketevan Bostoganashvili

Technical Content Writer @Mailtrap

Using Handlebars with Mailtrap Email Templates | Quick Guide with Examples

On February 14, 2023

6min read

Need to add some helpers to your email templates? Learn how to use Handlebars with Mailtrap to customize your emails.

Veljko Ristić

Content Manager @Mailtrap

Load More Posts

Blog

Email Deliverability Audit: A Step-by-Step Guide

Microsoft SNDS: Learn How to Improve Outlook Email Deliverability

EmailJS React: How to Send Emails From a Contact Form Without a Backend

ESP Migration Guide for SaaS and Product-Based Companies

How to Creat Email Marketing Strategy & An Overview of Ready-to-Use Strategies

Google Postmaster Tools: Learn How To Improve Gmail Email Deliverability

EmailJS React: How to Send Emails From a Contact Form Without a Backend

How to Send Emails Client-Side: A Developer’s Tutorial to EmailJS

Email List Growth Explained: Here’s 10 Steps You Have to Take

How to Send Emails in a Lovable React App Using EmailJS

How to Send Emails in a Replit App

How to Send Emails in Next.js using Client & Server-Side Methods: A Complete Guide

6 Subject Line Testers Tried & Compared: Here’s What I Found

How to Test Email Deliverability: Process & Toolkit Explained

Email Blacklists Explained: Causes, Solutions, Prevention

Email Client Testing Explained

SMTP Server for Testing: Cloud-based or Local?

How to Automate Email Verification in Selenium

ESP Migration Guide for SaaS and Product-Based Companies

What Are Email IP Pools and Why Should You Use Them for Higher Email Deliverability

How to Choose Email Service Provider: Actionable Q&A Guide

SMTP Providers Compared: Choose the Best One for Sending Transactional and Marketing Emails

AI Email Personalization: Examples, Benefits, and Best Practices

What is an ESP or Email Service Provider? A Beginner’s Guide

HTML Character Entities: NBSP and HTML Spaces Explained

Responsive HTML Email Template Development: A Step-by-Step Guide for Email Developers

HTML vs Plain Text Email: What to Choose For Your Next Email Campaign?

HTML Email: A Complete Tutorial for Email Marketers, Designers, and Developers

Complete Tutorial on Mailto Links: What They Are & How to Use Them

Here’s How You Add an Animated GIF to Your Email Signature

How to Creat Email Marketing Strategy & An Overview of Ready-to-Use Strategies

B2B Email Marketing: A Go-to Guide for Businesses

I’ve Tested 6 Email List Building Tools And Here’s What I Found

What Is an Email List and How to Build One Right

Email List Cleaning: Personal Insights On Ensuring High Email Deliverability

7 Mass Email Services Reviewed & Compared: Here’s What I Found

Let Your AI Agent Send Emails: Mailtrap MCP Server is Now Live!

Now You Can Send Targeted Campaigns with Mailtrap Contacts

Improved Templates with Drag-and-Drop Editor, Simplified Integration Flow, and More

Mailtrap Is Now ISO Certified

Now Mailtrap Customers Can Test Email Templates via API

Using Handlebars with Mailtrap Email Templates | Quick Guide with Examples

Your email workflows deserve more love