When we talk about email sending and testing, we usually pay attention to the message headers. We define and check “to”, “from”, “subject”, and then work with the message body. In this post, we will focus on the message copies - Cc and Bcc. Why does just one letter make such a big difference? And why is it so hard to test Bcc in emails? To get the answers, we will refer to the SMTP mechanics. Also, we will share some email tips and explain how you can test Bcc with Mailtrap.

We have gathered all of the information you need to know about email size and made a list of rules for crafting the perfect email in this post. Also, see how the email size feature in Mailtrap can help you with testing your email deliverability.

Mailtrap introduces a new feature which provides email count per inbox. Read more in this blog post.

In this guide you will find detailed instructions on how to quickly and easily set up Mailtrap. We explain Mailtrap functionality, main use cases, and also give a list of resources that will make your email testing even more efficient.

Our recent product update addresses API. Please review this article to take these changes into account when working with Mailtrap.