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Gmail and Yahoo rolled out their new sender rules in early 2024. Microsoft’s Outlook gave people more time but as of May 5, 2025, they’re enforcing hard. If you send 5,000+ emails/day for mailboxes of these providers, these aren’t “nice-to-have” best practices anymore and they’re non-negotiable...

The Good Part First: Setting up Lemwarm was super straightforward. Within a few clicks, I was up and running. What really impressed me early was the customization options. Their team seemed to understand the difference between B2B and B2C outreach. They even went as far as tailoring the warmup...

When you're setting up email tools or integrating your mailbox into a platform, you’ll often see something like: “Connect via OAuth / App Password / SMTP Credentials.” Sounds technical, right? It did for me when I first started. But what do these actually mean, and which one should you use...

What is Apple Mail Privacy Protection (MPP)? Apple introduced Mail Privacy Protection (MPP) in September 2021 with iOS 15, iPadOS 15, and macOS Monterey. This feature is available to users of the Apple Mail app (not just iCloud users) and applies when accounts (like Gmail, Outlook, Yahoo, etc.)...

As cold emailers scale outreach, a common tactic many platforms offer is: “Rotate IPs to bypass ESP sending limits.” Sounds great in theory. But do real humans change IPs every 5 minutes while sending emails? Human behaviour is the Gold standard for ESPs. When someone sends emails manually...

We all know how tough it is to stand out in a cluttered inbox. The idea of emails landing exactly when someone's most likely to open and click sounds like a dream. But is it really? What's the Big Idea Behind STO? Think of it like this: Instead of sending your email to everyone on your list at...

Whether you're launching a cold outreach campaign, onboarding a new domain, or switching email platforms, email warm-up is the critical first step in achieving high inbox placement. This post breaks down everything you need to know about warming up your email infrastructure and scaling cold...

What are spam filters? At their core, spam filters are software systems designed to detect and block unwanted, unsolicited, or malicious emails. They scan emails for signs with spam, including anything from suspicious sender details to spammy language, malicious links, or attachments. Outbound...

SMTP(Simple Mail Transfer Protocol) relay is a method of sending email through a third-party mail server (like SendGrid, Amazon SES, Mailgun, etc.) rather than your mail server. Your server/app passes the email to the SMTP relay, which forwards (relays) it to the recipient. When and why use...

Domain Name System (DNS) Records Setting up DNS records is essential to ensure your domain can send and receive authenticated emails, improve email deliverability, and prevent your emails from landing in spam. What You'll Need: Access to your domain registrar’s DNS panel (e.g., Namecheap) or...

DMARC is an open email authentication protocol designed to protect email senders and recipients from malicious activities, such as phishing, spoofing, and email impersonation. It enables domain owners to specify how email messages that claim to be sent from their domain should be handled if they...

DKIM (DomainKeys Identified Mail) is an email authentication method/protocol used to verify that an email message was sent by the domain it claims to be from. It ensures that the message has not been tampered with during transit. DKIM allows a sender's email server to digitally sign outgoing...

In the world of email marketing, the terms delivery and deliverability are often used interchangeably, but they refer to very different concepts altogether. Delivery refers to whether an email is successfully received by the recipient’s mail server. If the message doesn’t bounce (i.e., it isn't...

What is a SPF Record and How to Set It Up? SPF (Sender Policy Framework) is an email authentication protocol that tells receiving email servers whether an email is sent from a trusted source authorized by the sender. It is implemented by adding a TXT record to a domain's DNS records. The TXT...

Setting up your email infrastructure is the most important step before diving into cold emailing. A well-planned infrastructure ensures that your emails are delivered to the inbox, not flagged as spam, and that your sender reputation remains strong. Here's what I practice and recommend...