- Preis
- 5,17 €/Monat
- Bauzeit
- ein Abend
A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Fastmail, build a clean client for an existing mailbox without running public mail infrastructure. The hard boundary is mail hosting, spam filtering, domains, calendars, contacts, deliverability, and support, plus mail infrastructure, integrations, and client polish.
Der Moat
Ein Moat ist der Burggraben um ein Produkt: alles, was ein Nachbau nicht einfach mitkopieren kann, etwa Nutzer, Daten, Verträge oder Vertrauen. Je tiefer der Graben, desto eher lohnt sich das Abo trotz KI-Agent.Was Fastmail schwer vollständig ersetzbar macht
Infrastruktur
Globaler Betrieb und hohe Verfügbarkeit sind schwer selbst zu tragen.
Produktreife
Zuverlässigkeit und sauberer Feinschliff sparen dauerhaft Arbeit.
Der Prompt
Build a closest honest personal substitute for Fastmail in an empty repository. Use Tauri 2, React, TypeScript, SQLite, IMAP, SMTP, and OAuth where available; do not offer alternative stacks. The core loop is: connect an existing mailbox, index messages locally, provide a fast focused inbox, and send through the account's normal SMTP service without running public mail infrastructure. Make the first run work locally with one documented command. Store all user data locally by default and make export straightforward. Put secrets in .env, ship .env.example, and never commit credentials. Support one IMAP and SMTP account with credentials stored only in the OS keychain. Index headers and message bodies locally with resumable sync and a visible status page. Implement standards-based threading, folders, labels, archive, snooze, drafts, and search. Render HTML email in a locked-down sandbox and block remote images by default. Send multipart messages with attachments and preserve a local copy of every draft. Add export, local cache reset, account reconnect, diagnostics, and safe logging. Include clear empty, loading, success, and recoverable error states. Add input validation, safe filenames, and graceful handling of unavailable APIs. Write focused tests for the core transformation and one end-to-end happy path. Create a README with setup, architecture, permissions, data location, and backup steps. Do not add accounts, billing, telemetry, analytics, or a hosted control plane. Do not claim to reproduce proprietary data, network liquidity, regulated access, or frontier infrastructure. Deliberately leave out running a public mail server. Deliberately leave out shared team inboxes and sales workflows. Deliberately leave out mobile push services and provider-scale spam filtering. Finish by running the tests and listing the exact commands used.
Lies, was Entscheider lesen.
Jeden Sonntag das Wichtigste aus der KI-Welt. Kompakt, verständlich, praxisnah. Schließe dich über 4.500 Lesern an.
100 % kostenlos. Jederzeit mit einem Klick abmeldbar.
Was du verlierst
- mail hosting, spam filtering, domains, calendars, contacts, deliverability, and support
- mail hosting and deliverability
- push on every platform
- advanced team collaboration
- provider-specific AI and search
Warum Leute trotzdem zahlen
People still pay for Fastmail because an email client can be rebuilt; operating a trusted mail service with excellent deliverability cannot. The recurring cost buys IMAP quirks, OAuth, MIME, threading, search, attachments, offline sync, notifications, secure storage, and provider changes, not just the visible interface.
Die Zahlen
| Plan | Monatlich | Jährlich (pro Monat) | Enthalten |
|---|---|---|---|
| Individual | 5,17 € / user | 4,31 € | 1 user; 60 GB total storage (50 GB mail/calendar/contacts + 10 GB files). |
| Duo | 8,62 € / flat | 6,90 € | 2 users; 120 GB total storage (60 GB per person). |
| Family | 12,07 € / flat | 9,49 € | Up to 6 users; up to 360 GB total storage (60 GB per person). |
| Basic (business) | 3,45 € / user | n. a. | 6 GB per user (5 GB mail/calendar/contacts + 1 GB files). |
| Standard (business) | 5,17 € / user | n. a. | 60 GB per user (50 GB mail/calendar/contacts + 10 GB files). |
| Professional (business) | 8,62 € / user | n. a. | 150 GB per user (100 GB mail/calendar/contacts + 50 GB files). |
- Gratis-Version
- no free tier; up to 30-day free trial
- Abrechnung
- monthly, annual, 24-month and 36-month prepayment; personal annual rates shown above; cancel/change anytime, but unused prepaid time is not refunded
- Versteckte Kosten
- Taxes are extra; paid storage upgrades are available up to 300 GB per user but public add-on prices were not shown; registering a custom domain costs extra if you do not already own one.
Geprüft am 31.07.2026 · Quelle · aus USD umgerechnet, der EUR-Preis beim Anbieter kann abweichen
Häufige Fragen
Preis, Nachbau und Ersparnis von Fastmail auf einen Blick.
Was kostet Fastmail?
Fastmail kostet im Plan „Individual" 5,17 € pro Monat (geprüft am 31.07.2026). Gratis-Version: no free tier; up to 30-day free trial
Kann ich Fastmail mit KI selbst nachbauen?
Nein, lieber zahlen: A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Fastmail, build a clean client for an existing mailbox without running public mail infrastructure. The hard boundary is mail hosting, spam filtering, domains, calendars, contacts, deliverability, and support, plus mail infrastructure, integrations, and client polish.
Was verliere ich, wenn ich Fastmail ersetze?
Beim Eigenbau verzichtest du auf: mail hosting, spam filtering, domains, calendars, contacts, deliverability, and support, mail hosting and deliverability, push on every platform, advanced team collaboration, provider-specific AI and search.
