Dive into the technical aspects that determine whether your emails reach the inbox. Learn about deliverability, SPF/DKIM/DMARC authentication, IP management, SMTP configuration, and best practices to avoid spam. Technical guides and practical tips to improve the reputation of your email marketing sends.
Spamtraps, or spam traps, are email addresses created for the specific purpose of catching and fighting unwanted email, or spam. These email addresses are used by Internet service providers (ISPs), email filtering companies and anti-spam organizations to identify and penalize senders of unwanted email. They aren’t used for regular communication, so any email received at […]
Sometimes, when you send a mailing, some of the emails addressed to your subscribers may remain as queued emails for a while. That’s what we’ll explain in this article, so you know the possible causes of queued emails and when you’ll need to contact our support team. We’ve already introduced the concept of queued emails […]
This is a very common problem that many users report to us. It happens because many mail servers and anti-spam systems let you set up a rule so that any email arriving from the corporate domain is rejected if the sender’s IP is not that of the organization’s mail server or servers. It is similar […]
This time we want to approach the topic from a perspective closer to marketing and sales teams. In more down-to-earth language, we’ll go through the reasons behind each bounce and, perhaps more importantly, what we can do (if anything can be done, which isn’t always possible) to rescue that subscriber from their failed bounced status […]
Many of you have asked us why emails sent to some online email providers sometimes seem to arrive late. Outlook/Hotmail and other ISPs limit the number of messages a given IP can send within a period of time, based on the IP’s reputation. When an IP exceeds its sending limit, every SMTP command will receive […]
Just a few days ago Return Path published a very interesting PDF for all of us who do email marketing: “Marketer’s Field Guide to Gmail, Outlook.com, and Yahoo!”. In the PDF you’ll find a very interesting analysis of the main ISPs — Gmail, Outlook.com (Hotmail) and Yahoo! Mail — their main features and the main […]
