We're launching toolbox.smtp.ai, the mySMTP Deliverability Toolkit - a free, unified suite of tools built for email senders, deliverability engineers, and technical marketers who need fast, reliable answers without the tab-switching.

DKIM is one of the three pillars of email authentication - and one of the easiest things to get silently wrong. A missing record, a weak key, or a mismatched selector can quietly tank your deliverability without a single bounce or error message.

Every email you send exits your application or mail server through a TCP port - a numbered "door" in the network through which data flows. For email specifically, there are four ports that matter: 25, 465, 587, and 2525.

Transactional email is the engine behind every modern digital service. Whether your platform handles subscriptions, payments, logins, workflow updates, or user-requested content, your customers rely on these messages to arrive instantly and without fail.

Recently, it was revealed that Microsoft deleted a user’s Outlook.com account and all associated emails - solely for political reasons, raising an alarming question.

Email marketing is one of the best ways to connect with your audience. But with all the tools out there, it’s easy to feel overwhelmed trying to find the right setup. That’s where MailWizz and mySMTP dedicated servers come in.

In the world of email marketing and communication, ensuring that your messages reach the recipient's inbox is crucial. Tree key authentication protocols, SPF, DKIM and DMARC play a significant role in enhancing email deliverability.

If you’re looking to buy an SMTP server in 2026, this guide will walk you through the necessary steps. Whether you’re sending bulk emails, newsletters, transactional emails, or more, understanding how to purchase and set up an SMTP server is essential.