Tutorial
6 min readHow to send transactional email from your Cloudflare custom domain
Why most transactional-email providers are overkill for a Cloudflare-native team, and how Cloudflare Email Services + a Worker gets you there in a day.
Self-hosted · CFFlowmails
Runtime v0.1
Journal
Operator notes on Cloudflare-native email.
Long-form writing about self-hosted email in D1, Workers-native routing, the REST API, and the parts of the platform that show up in the security review.
Categories
Tags
alternativeamazon-sesapiauditautomationcatch-allcloudflarecloudflare-apicloudflare-email-routingcloudflare-workerscompliancecostcustom-domaincutoverd1data-residencydata-sovereigntydeep-divedeliverabilitydkimdmarcemail-routingemail-servicesemail-webhookhelpdeskhmacinboundleast-privilegelimitationsliteral-matchersmail-servermailgunmigrationmulti-tenantpostfixpostmarkpricingproduct-overviewr2resendrest-apiretryroute-tablesruntimescoped-tokenssecurityself-hostedsendsendgridspfsupportsupport-inboxtcotickettransactional-emailtutorialvendor-lock-inwebhookwebhooks
4 of 22 posts match
Comparison
9 min readResend vs Flowmails — when hosted API wins and when self-hosted wins
Resend is the fastest possible first-send. Flowmails is the same primitive with your D1, no per-email pricing, and a Cloudflare account under your control. Pick Resend or Flowmails based on which of those you actually want.
Comparison
10 min readPostmark alternative on Cloudflare — transactional-only, self-hosted
If your team only used Postmark for transactional mail, switching to Flowmails keeps the same shape and removes the per-email fee. Newsletter / broadcast stays on whatever tool you have.
Deep Dive
13 min readTransactional email pricing on Cloudflare — the full TCO picture
Transactional-email pricing splits into per-email fees (Resend, SendGrid, Mailgun, SES), bundled tiers (Postmark Pro), and flat platform fees (Cloudflare-native stacks like Flowmails). Here's the same-volume comparison.