The MailFlash blog

Better email, explained simply

Guides on deliverability, SMTP, APIs and everything else that happens between “send” and “inbox”.

Easy Way to Send Emails in a Next.js Application with MailFlashGuides
Featured · Guides

Easy Way to Send Emails in a Next.js Application with MailFlash

Learn the easy way to send emails in a Next.js application with MailFlash: verify your domain, use Server Actions and Route Handlers, build a contact form and handle webhooks.

Nov 8, 2026 · 12 min read · MailFlash Team

How to Land Your Emails in the Inbox, Not Spam: A Practical Deliverability ChecklistDeliverability

Nov 7, 2026 · 5 min read

How to Land Your Emails in the Inbox, Not Spam: A Practical Deliverability Checklist

Emails land in spam because of weak authentication and poor sender reputation, not bad copy. Here is a step-by-step checklist covering SPF, DKIM, DMARC, warm-up and list hygiene.

SPF, DKIM and DMARC Setup Guide: How to Authenticate Your Email DomainDeliverability

Nov 6, 2026 · 7 min read

SPF, DKIM and DMARC Setup Guide: How to Authenticate Your Email Domain

Learn how SPF, DKIM and DMARC work together, the right order to set them up, and the DNS mistakes that quietly send your transactional email to spam.

Top 3 Resend Alternatives for Transactional Email in 2026 (Plus MailFlash)Guides

Nov 4, 2026 · 5 min read

Top 3 Resend Alternatives for Transactional Email in 2026 (Plus MailFlash)

Compare Postmark, Amazon SES, and Mailgun as Resend alternatives for transactional email in 2026, and see where MailFlash fits.