Category: Blog

The welcome email is the single highest-performing message in your entire email program. According to GetResponse’s 2024 Email Marketing Benchmarks report, which analyzed 4.4 billion messages, welcome emails achieve an average open rate of 83.63% and a click-through rate of 16.60%, far above any campaign type they track. That window closes fast: subscriber attention is…

The subject line is the only part of your email that competes for attention before anyone opens it. If it fails, the rest of your work, the copy, the design, the personalized offer, goes unread. Getting it right is less about tricks and more about a short list of reliable patterns, applied with discipline. This…

Whether you need an email API or SMTP relay depends on what you want to do after a message leaves your application. If you only need to send, SMTP is fine. If you need delivery receipts, bounce handling, click tracking, and template rendering in one request, you want an HTTP email API. Most SaaS teams…

Practical guide to email deliverability for SaaS teams: authentication, list hygiene, sender reputation, Gmail/Yahoo requirements, and monitoring.

Pick SendGrid if your team needs built-in marketing automation alongside transactional email, or if you want a single platform that handles both API sends and campaign management. Pick Mailgun if you want a leaner developer-focused API, EU data residency without a plan upgrade, or built-in email validation without buying an add-on. Neither is universally better.…

If you’re reconsidering Mailgun, the reason usually falls into one of three buckets: pricing increases after the Sinch acquisition, shared-IP deliverability that has measurably declined, or support that degrades at lower plan tiers. The best replacement depends on which of those is your primary pain point. For raw deliverability on transactional email, Postmark is the…

The right Brevo alternative depends on what is driving you to look elsewhere. For pure transactional sending with top inbox placement, Postmark or Resend are the clearest upgrades. For SaaS lifecycle automation, Loops or Customer.io handle event-triggered workflows that Brevo handles inconsistently. For developer teams wanting a single platform that covers templating, automation, and API…

The react-email library by Resend lets you write email templates as React components, preview them in a local browser, and render them to battle-tested HTML with a single render() call. No more wrangling hand-coded table layouts or context-switching to a MJML file: your templates live next to your app code, accept TypeScript props, and get…

Understand the difference between soft and hard email bounces, the SMTP reply codes that signal each type, and the correct programmatic handling: retry soft bounces, suppress hard bounces immediately.

SPF, DKIM, and DMARC are the three DNS records that determine whether a receiver trusts your email. Here is what each one does, what each one does NOT do, and how they work together to protect your domain and keep your mail out of spam.

SMTP is the 40-year-old protocol behind every email you send. This guide explains the full journey from your app to the inbox, including the SMTP conversation, ports, relay services, and when a sending API beats SMTP.

A dunning email is an automated message sent to a subscriber after a payment fails, asking them to update their billing information or take action to recover the charge. For SaaS companies, these emails are the primary tool for fighting involuntary churn: the revenue lost not because customers chose to leave, but because a card…