Category: Blog

Spam traps are monitoring addresses used by mailbox providers and blocklist operators to catch senders with poor list hygiene. Learn the three types, how you end up hitting them, and the practical steps that keep your list clean.

Learn how to structure an HTML email with nested tables, modular sections, and a ~600px wrapper so it renders consistently in Gmail, Apple Mail, and Outlook.

An SMTP relay is a third-party service that accepts your outbound mail and handles the actual server-to-server delivery for you, including reputation management, bounce processing, and suppression lists. Here is how it works and when you need one.

A code-first tutorial covering table-based layouts, the fluid/hybrid approach, media queries, Outlook MSO ghost table caveats, and a minimal working responsive HTML snippet.

BIMI (Brand Indicators for Message Identification) is a DNS-based standard that lets you display your company logo directly in the inbox, next to your sender name. Gmail, Yahoo Mail, and Apple Mail show a verified logo when your domain passes strict authentication checks and, in most cases, holds a cryptographic certificate proving logo ownership. The…

Double opt-in requires new subscribers to confirm their email address before joining your list. Here is how it works, when to use it, and what GDPR says.

A practical guide to re-engagement and win-back email campaigns for SaaS: when to trigger, campaign structure, what to send, and when to suppress.

A merge tag is a placeholder in your email template that your ESP replaces with recipient-specific data at the moment each message is sent. Write {{ customer.first_name }} once in your template, and every subscriber gets their actual name in that spot. The placeholder is gone by the time the email hits an inbox; what…

Email webhooks are HTTP POST requests your provider sends to your server each time something happens to a message: it gets delivered, bounced, opened, clicked, reported as spam, or unsubscribed. Rather than polling an API to find out what happened to a send, you register an endpoint once and the provider calls you. Every serious…

Sending an HTML email the right way means setting both an HTML body and a plain-text alternative in a single message. Email clients receive a multipart/alternative structure and pick the richest version they can display. Clients that can show HTML render the styled version; others fall back to plain text. Skipping the text fallback is…

Transactional email and marketing email are not the same thing, and mixing them up causes real problems: broken compliance, damaged sender reputation, and password-reset emails buried under bulk-mail filters. Transactional emails are triggered by a specific action the recipient already took, such as placing an order or resetting a password. Marketing emails are sent to…

A practical guide to trigger emails: how they differ from broadcasts, the event-driven send model, common types (welcome, onboarding, transactional, dunning), and implementation patterns for SaaS teams.