• Email Attachment Size Limits: What Actually Sends in 2026

    Email Attachment Size Limits: What Actually Sends in 2026

    Most email attachment size guides give you a number and call it done. The problem is that the number on the box isn’t the number that actually sends. Encoding adds weight, recipient servers have their own caps, and a 24 MB file can bounce off a 25 MB limit without ever reaching an inbox.

  • Transactional SMS: What It Is, Examples, Rules, and How to Send It (2026 Guide)

    Transactional SMS: What It Is, Examples, Rules, and How to Send It (2026 Guide)

    Transactional SMS is the text your customer gets the second something happens on their account. The shipping label is printed. The login attempt fires. The appointment is 30 minutes out. It’s automated, it’s triggered by an event, and it carries information the recipient actually wants. Marketing? That’s a separate animal with separate rules.

  • What Is SMTP Relay? How It Works, When to Use It, and How to Choose a Provider

    What Is SMTP Relay? How It Works, When to Use It, and How to Choose a Provider

    This guide is the one I wish existed when I started supporting SMTP customers in 2017. It explains what SMTP relay actually is, how it works step by step, when you genuinely need one, how to set it up without breaking your DNS, how to pick a provider without getting burned, and what tends to...

  • Navigating GDPR, CAN-SPAM and CASL

    Navigating GDPR, CAN-SPAM and CASL

    Email marketing remains one of the most effective ways to build customer relationships, but it also comes with serious compliance responsibilities. Between Europe’s GDPR, the United States’ CAN-SPAM Act, and Canada’s CASL legislation, marketers today need to understand far more than just open rates and click-throughs.

  • Storytelling or Storyselling?

    Storytelling or Storyselling?

    There’s a common belief in marketing that if you tell a great story, people will naturally buy. It sounds nice. It feels right. But in practice, it’s only half true. Storytelling captures attention. Storyselling drives action.

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