SMTP Retries and Deferrals: Understanding Email Delays & How to Fix Them
The main protocol for sending email is the Simple Mail Transfer Protocol (SMTP), which manages both the sending and routing of messages between networked devices. But the journey from sender to recipient can sometimes be rocky. This may also result in SMTP retries/deferred by the senders. Though these mechanisms are supposed to be able to deal with […]
Fixing Reverse DNS Lookup Failures Best Practices for Email Server Configuration
Email is an instrumental communication tool that finds its advantages in areas such as marketing, customer support, and other internal communication processes. Email marketing is considered as the “king of all marketing channels”, while email communication for both customer support and internal communication offers a non-time sensitive system allowing everyone without rushing too much of […]
SMTP AUTH Mechanisms Explained Choosing the Right Authentication for Secure Email Sending
Phishing attacks, and spam emails remain a continuous problem for many email users. One of the most notorious forms of email security issue is the unauthorized access or usage of a bad actor or a spammer towards an email. If this ever happened to you then that means that you probably have an issue with […]
Reverse DNS Lookup Failures How They Impact Email Deliverability and Sender Trust
Email is a valuable communication channel, especially for many businesses and email marketers. It is known to develop the highest ROI, which should make inbox placement and email deliverability a priority. The capability to ensure that your emails are delivered to the intended recipient is a simple idea, yet there are still some email users […]
Why SSL & TLS Certificate Errors Are Hurting Your Email Deliverability
If you are an email marketer, you probably understand that having the best email and domain setup are one of the fundamentals to ensure that you have a functioning email. However, one factor that can still affect your email deliverability and overall reputation are errors caused by SSL (Secure Sockets Layer) and TLS (Transport Layer […]
Maximizing Email Deliverability: Grouped vs. Randomized Sending
Many organizations suffer the pain of emails ending up in spam folders or being throttled—often because sending practices are widely inconsistent with Outlook 365’s spam filters. At Warmy, our research team continues to do more by figuring out how to get more of your emails delivered, straight to your intended inbox. Our ongoing testing and analysis […]
SSL and TLS Certificate Errors in Email Servers: How They Impact Deliverability
What if you were to send an important email—a client proposal, let’s say, or a security update, or internal memo—and it was rejected, marked as spam, or even intercepted? That’s where SSL/TLS encryption comes in. These protocols secure email traffic through data encryption and confirmation of the authenticity of mail servers. But SSL/TLS encryption doesn’t work […]
The Challenges of SMTP over IPv6: What You Need to Know Before Transitioning
SMTP (Simple Mail Transfer Protocol) has been the staple of email communication for the last couple of decades—forwarding messages over networks via the Internet Protocol, which has, until recently, been IPv4. But exhaustion of IPv4 addresses is gradually pushing businesses and email service providers to think about moving to SMTP over IPv6. It provides a nearly infinite […]
SMTP over IPv6: The Future of Email Servers and What It Means for Deliverability
The Simple Mail Transfer Protocol (SMTP)’s primary role is to make sure messages take the right path from senders to recipients. But with the world reeling with the internet boom, the traditional IPv4 system reached a point where it could no longer keep up. IPv4, the internet’s original addressing method, only has a limited number of […]
How to Boost Brand Recognition and Email Deliverability
While email marketing plays a key role in brand building, it has become more challenging than ever. Emails may go unnoticed among the others in the inboxes. Then there are phishing and spoofing attempts. And yes, the infamous spam folder and a thousand other challenges that businesses tackle every day. BIMI (Brand Indicators for Message Identification) […]
