Category: Blog

A breakdown of Brevo’s pricing tiers, email-volume limits, and the contact-based vs. volume-based billing distinction, verified against the official pricing page as of July 2026.

A noreply@ sending address blocks replies, invites spam complaints, and gives up the engagement signals mailbox providers reward. Here is what the data says, the narrow cases where it still holds up, and what to use instead.

A breakdown of Mailgun’s Free, Basic, Foundation, and Scale plans, overage rates, dedicated IP and validation add-ons, and Mailgun Optimize’s separate pricing, verified against the official pricing page as of July 2026.

Twilio SendGrid actually sells two separate products with two separate price lists: Email API (transactional and programmatic sending) and Marketing Campaigns (contact-based email marketing). As of July 2026, Email API runs from a free 100 emails/day tier up through Essentials ($19.95/mo for 50,000 emails), Pro ($89.95/mo for 100,000 emails), and custom-priced Premier. Marketing Campaigns bills…

A breakdown of Resend’s pricing tiers, free tier limits, overage rates, and a worked cost example, verified against the official pricing page as of July 2026.

Postmark prices by monthly email volume, not prepaid credits: four plans from free to $18/mo, overage rates that drop as you grow, and a shared quota across transactional and broadcast streams. Here is the full structure with a worked cost example.

Email bounce rate measures the percentage of sent messages that failed to deliver. Learn the formula, what the thresholds mean for your sender reputation, and the concrete steps that keep your bounce rate below 2%.

Postmark is the top pick for inbox placement on critical transactional sends. Amazon SES wins on raw cost at volume. Brevo and Loops handle the transactional-plus-lifecycle combination. Mailtrap adds a testing sandbox alongside production sending. This guide covers seven verified alternatives with real pricing and a use-case decision matrix.

A secure password reset email combines a single-use, time-limited token with a clear one-button message that matches your product identity. This guide covers the full flow for developers and the email mechanics for product teams, with a ready-to-adapt template.

The email preheader (preview text) is the short line shown after your subject in the inbox. Learn what it is, how to write one that lifts open rates, how to implement the hidden preheader span in HTML, and see before/after examples.

The List-Unsubscribe header is an email header field that lets mailbox providers render a native “Unsubscribe” button at the top of a message, separate from any unsubscribe link in the body. When paired with the List-Unsubscribe-Post header defined in RFC 8058, that button triggers a true one-click unsubscribe: the mail client sends an HTTP POST…

Email warmup is the practice of gradually increasing sending volume from a new domain or IP address so that Gmail, Outlook, Yahoo, and other mailbox providers build a positive reputation for you before you send at full scale. The method: start with tens or low hundreds of emails per day to your most engaged recipients,…