Fastmail alternatives,
built on Cloudflare.

Yes — Fastmail can be replaced with Cloudflare. Cloudsteading tracks 7 working builds that swap Fastmail for a Cloudflare loadout (R2, Workers, D1, and others). Each entry includes source code, monthly cost estimates, and honest tradeoffs.

See 7 builds ↓

7 builds·6 CF primitives wired·email

Top build

replaces Fastmail

mail2telegram

Receive domain email and read messages and attachments through Telegram.

Open build →

How Cloudflare replaces it

Loadout most often used by the 7 builds replacing Fastmail.

R2files & assets

in 7

Workersrequest handler

Durable Objectsper-tenant state

in 3

Frequently asked

Can you replace Fastmail with Cloudflare?+

Yes. 7 approved Cloudsteading builds replace Fastmail using Cloudflare primitives — most commonly R2, Workers, D1, Workers AI. Each entry ships working code and a monthly cost estimate.

Which Cloudflare primitives replace Fastmail?+

Across 7 builds replacing Fastmail, the most-used Cloudflare primitives are R2, Workers, D1, Workers AI, Email Workers, Durable Objects. Most email workloads need only 3–5 primitives — typically Workers for routing, D1 or KV for state, and R2 for blobs.

What is the best open-source Fastmail alternative on Cloudflare?+

mail2telegram — Receive domain email and read messages and attachments through Telegram.. See the build entry for source code, primitive loadout, and the full cost breakdown.

directory/alternatives to/Fastmail