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Top Email Sending and Testing Resources

How to Embed HTML5 Video in Email
On June 23, 2022
8min read
Viktoriia Ivanenko Technical Content Writer @ Mailtrap

Email deliverability: Everything you need to know
On September 07, 2022
17min read
Many factors have an impact on whether an email will be delivered or not. Check out what to do and what to avoid to always be on the winning side!
Piotr Malek Technical Content Writer @ Mailtrap

SPF Record Explained
On February 07, 2022
9min read
SPF (Sender Policy Framework) record is a DNS record to protect your emails from being forged. Find out more about the SPF to increase the credibility of your product.
Zakhar Yung Technical Content Writer @Mailtrap
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Email authentication: pass, flag, reject

An Ultimate Guide to Email Authentication
On December 19, 2022
14min read
In this ultimate guide, we cover all available email authentication methods and share detailed examples for each.
Piotr Malek Technical Content Writer @ Mailtrap

Everything You Need to Know About SMTP Security
On August 14, 2019
10min read
SMTP by its nature is not secured in any way, surprisingly. Luckily there are ways to keep your emails safe with no or little effort.
Piotr Malek Technical Content Writer @ Mailtrap

STARTTLS vs SSL vs TLS
On October 08, 2019
6min read
With so many similar names, it's not hard to get confused. Check out our latest guide to email encryption.
Piotr Malek Technical Content Writer @ Mailtrap
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How to Test Emails in PHP
On May 28, 2020
6min read
Let’s discuss how to test and preview emails in your PHP app or website during development!
Diana Lepilkina Content Specialist @Mailtrap

SMTP Server for Testing: Cloud-based or Local?
On September 27, 2018
4min read
How would you approach choosing an SMTP server for testing? Find the key factors to consider in this blog post.
Diana Lepilkina Content Specialist @Mailtrap

How to Test Emails in Mandrill, Sendgrid, and Mailgun
On May 21, 2019
6min read
Learn about the options for quality email testing proposed by each of listed sending providers and decide whether a third-party dedicated testing service will be the right choice.
Yevgen Tsvetukhin Product Manager @Mailtrap
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Sendgrid vs Mandrill vs Mailgun – How to Choose?
On April 29, 2019
10min read
Which features of the email service provider matter the most? Let’s review and compare Sendgrid, Mandrill, and Mailgun, the most popular email services.
Yevgen Tsvetukhin Product Manager @Mailtrap

11 Tips to Improve Your Email Marketing in 2021
On November 30, 2020
9min read
The new year can be an excellent opportinity for improving your email marketing. Our friends from HubSpot share what to focus on in 2021.
Irina Nica Senior Marketing Manager @Hubspot

Intro to Transactional Emails
On August 28, 2019
11min read
Transactional emails are an inseparable part of any customer experience, for a reason! Learn what they’re used for and how to make yours better in no time.
Piotr Malek Technical Content Writer @ Mailtrap
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Private: What Makes Mailtrap a Unique Email Testing Tool?
On January 28, 2020
4min read
Test Bcc, preview messages, inspect HTML errors right away, and conduct other crucial email checks in one tool. Yes, that’s all about Mailtrap, a simple but super powerful tool for safe email testing.
Diana Lepilkina Content Specialist @Mailtrap

Share Your Email Testing Results with Team Members
On July 03, 2019
3min read
Learn how Mailtrap can help you increase the efficiency of your email testing process. Features for organizing your test data and sharing results with your colleagues and clients are explained in this post.
Yevgen Tsvetukhin Product Manager @Mailtrap

Using and Testing Cc and Bcc in SMTP Protocol
On August 28, 2019
5min read
Referring to the SMTP mechanics, we define the main email headers and the Bcc specific in this post. We also share a few email tips and explain how you can test Bcc with Mailtrap.
Yevgen Tsvetukhin Product Manager @Mailtrap
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The Latest Posts

Cold Email Personalization: How to Do It Right [2023]
On May 31, 2023
8min read
Find out the impact of cold email personalization and how to master it so that you can increase your email response rates and build meaningful connections with your recipients.
Antonio Gabrić Outreach Manager @ Hunter
Telnet send email

How to Send Emails with Telnet 
On May 24, 2023
10min read
In today’s tutorial, we explain how to send emails with Telnet from Windows and Linux machines. Read more.
Ketevan Bostoganashvili Technical Content Writer @Mailtrap

What Is Mail Merge?
On May 24, 2023
11min read
In today’s guide, we explain mail merge in detail. We discuss its use cases and provide a step-by-step tutorial on Microsoft 365 and Google Editors.
Piotr Malek Technical Content Writer @ Mailtrap

Sending emails from Google Sheets
On May 17, 2023
18min read
Learn how to send emails from Google Sheets in our comprehensive guide: manually, automatically, in bulk, with attachments, HTML, by trigger and more!
Piotr Malek Technical Content Writer @ Mailtrap

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