SMTP Ports: How to Choose the Right One

Written by Julia G

The process of transmitting email messages from the sender to the recipient is carried out by Simple Mail Transfer Protocol (SMTP). Email service providers have their SMTP servers, which deliver emails to the recipients’ servers. The sender just creates an email, fills in their name and email address, and hits “Send”. The email distribution is then managed by the SMTP server maintained by the ESP. 

Debunking 10 Popular Myths about DMARC

Written by Julia G

As the threat landscape changes, more and more organizations are using the DMARC (Domain-based Message Authentication, Reporting, and Conformance) protocol to protect their domains against phishing, spoofing, compromise, and other email threats. DMARC is a very powerful defense against these when used correctly. 

Why DKIM Fails: 5 Steps to Fix DKIM Failure

Written by Julia G

Email is an effective tool for corporate and personal communication in the digital age. But as phishing scams and email fraud increase in frequency, businesses need to ensure that their email correspondence is secure and trustworthy. This is where email authentication techniques are useful.

Best Practices for Bypassing Email Spam Filters

Written by Julia G

Considering different factors that are evaluated by the email spam filters to differentiate between legitimate messages and email spam, email senders must have a complex approach to their email marketing program in order to successfully pass through the toughest spam filters and deliver their messages to the recipient’s inboxes.

[Case Study] How to Achieve Better Inbox Placement

Written by Julia G

While analyzing the clients’ email test reports in GlockApps, sometimes we noticed a difference in the Inbox placement ratios for the same message in the manual and automatic tests. Provided that the message was sent to the seed list from the same email account and mail server, we wondered what could cause different Inbox placement percentages. 

New Report: Email Deliverability Statistics Q2 2024 – Analysis, Changes, and General Trends [+ Free PDF Inside]

Written by Julia G

A lot of different factors determine whether or not an email will reach the targeted recipient and where it will be put: Inbox or Junk folder. These factors include the message copy, sender’s domain reputation, sender’s IP score, prior user interaction, and sending infrastructure. 

Additionally, each ISP uses a set of its rules to identify email spam signals, which make it place the message to the Spam folder. Needles to say, the recipients may configure custom filtering settings in their email clients to keep unwanted messages out of their inboxes.

Effective Tips to Resolving SMTP 501 Error

Written by Julia G

Email delivery can occasionally fail if the SMTP protocol, which is essential for sending email messages, encounters issues. As a result, email stops working and senders may receive bounce-back messages outlining the problem. 

A lot of delivery failures occur because of the errors with the 501 status code. An urgent resolution of the SMTP 501 error ensures efficient email exchanges and successful delivery.

How to Decrease Your Email Spam Score for Better Inbox Placement: Avoiding Spam Signals

Written by Julia G

Email marketing is only effective when your email communications go to the recipient’s Inbox instead of the Spam folder. Therefore, reducing the likelihood of your email to be spam is significant for successful email campaigns. 

In this article, we will examine email spam signals, learn how to recognize these signals in emails and how to avoid them when working on your future mailings. Additionally, you’ll receive insightful advice on how to improve your email campaigns’ deliverability.

What’s Causing the 550 SMTP Error and How to Fix It?

Written by Julia G

It’s always frustrating to see your beautiful email campaigns failing due to email delivery issues. The causes of such failures range from suspicious elements in the email’s content, incorrect DNS records, invalid email addresses to email quotas, recipient’s restrictions, and email server issues. The good news is that the majority of the issues can be fixed by the sender. 

SMTP Error: 554 Email Rejected Due to Security Policies – 7 Steps to Fix It

Written by Julia G

In order to guarantee a successful email delivery, servers engage in a number of exchanges known as the SMTP process, which is essential to email communication. This procedure is interfered with and the email’s trip is stopped when an SMTP error happens. Usually, a bounce message indicating that the email could not be delivered along with a short error description is sent to the sender.