Mozilla Thunderbird vs. Becky!: eine gute Linux-Alternative?

Mozilla Thunderbird als Linux-Alternative zu Becky!

Aktualisiert am 18. Oktober 2026

Unser Fazit

Mozilla Thunderbird is a solid replacement for Becky! for most users, especially those needing POP3/IMAP support, multiple identities, and local mail storage. It runs well on Linux, handles filtering, search, and HTML rendering competently, and supports address book import/export. While heavier than Becky! in resource use, its open-source nature, active development, and extensibility make it a reliable long-term choice. Users prioritizing minimal resource usage or nostalgic for Becky!'s interface may find Thunderbird less ideal, but functionality-wise, it covers the core needs effectively.

Funktionsabdeckung90%

Lizenz: MPL-2.0
Preis: Kostenlos
Aktuelle Version: —
Bewertung: —

Mozilla Thunderbird installieren Website ↗

Was gleich funktioniert

Supports POP3 and IMAP with multiple accounts and identities
Stores mail locally using mbox and Maildir formats
Offers message filtering and tagging rules
Includes a built-in address book with import/export capabilities
Provides full-text search and basic HTML email rendering

Was anders ist

Thunderbird uses more memory and CPU than Becky! due to its XUL-based interface
Lacks native Exchange/ActiveSync without add-ons like TBSync
No built-in support for some legacy mail formats Becky! handles
Calendar is integrated via Lightning, whereas Becky! has simpler scheduling
Thunderbird has a more complex interface compared to Becky!'s streamlined design

Ihre Becky!-Dateien öffnen

Thunderbird does not directly open Becky!'s proprietary mailbox files. However, Becky! can export mail in standard .eml or mbox formats, which Thunderbird can import using built-in tools or extensions like ImportExportTools NG. Address books from Becky! can typically be exported as CSV or LDIF and imported into Thunderbird. Direct migration may require manual steps or third-party scripts, but interoperability is achievable with effort.

Von Becky! zu Mozilla Thunderbird wechseln – Schritt für Schritt

Export Becky! mailboxes to .eml or mbox format
Export Becky! address book as CSV or LDIF
Install Thunderbird on Linux and set up email accounts
Use ImportExportTools NG to import saved messages
Import the address book CSV into Thunderbird's Contacts
Configure filters and identities manually

Wichtige Funktionen von Mozilla Thunderbird

Integrierter Kalender via Lightning
Unterstützung für IMAP, POP3, Exchange via Add‑ons
Erweiterbar mit Erweiterungen (Themes, Add‑ons)
Integrierter RSS‑ und News‑Reader
Chat‑Client (IRC/XMPP/Matrix)
Open‑source, plattformübergreifend

Häufige Fragen

Can Thunderbird run on low-end Linux systems like Becky! does on Windows?

Thunderbird runs on most Linux systems but uses more RAM and CPU than Becky!. Lightweight setups (e.g., XFCE with Thunderbird in low-memory mode) help, but it’s not as frugal as Becky!.

Does Thunderbird support the same level of message filtering as Becky!?

Yes, Thunderbird supports robust message filtering by sender, subject, size, and custom headers, with actions like move, tag, and delete. Rules are slightly less granular than Becky!'s but sufficient for most users.

Can I use Thunderbird with Japanese email formats and encodings?

Yes, Thunderbird handles ISO-2022-JP and other Japanese encodings correctly. It supports JIS and Shift_JIS text, and users in Japan commonly use it without issues.