Mcaster1MailCaster
Cross-platform desktop email client built around 15 AI personas, native PGP, FIDO2 hardware-key auth, and OAuth2 for Gmail / Microsoft 365 / Zoho. Postbox & Thunderbird replacement with first-class local-LLM integration.
What MailCaster Will Do
15 AI Personas
Terse-engineer, warm-customer-service, legal-counsel, NPR-host, and 11 more. Each with tuned tone, formality, vocabulary.
Inline Drafts
Hotkey-driven draft generation. Local Ollama writes in your chosen persona. You edit and send.
Smart Triage
Auto-classify inbox into Reply Now / Read Later / Archive / Newsletter using a local model.
FIDO2 + PGP
Hardware-key login (YubiKey, Hirsch uTrust) plus native PGP/GPG message signing & encryption.
Modern OAuth2
Native OAuth2 flows for Gmail, Microsoft 365, Zoho. Plus legacy IMAP/SMTP for everything else.
Local-First Privacy
All AI runs through your local Ollama. Your inbox never touches a cloud LLM.
Part of the Mcaster1 Ecosystem
MailCaster shares the FIDO2 stack with Mcaster1KeySmith, the SMTP integration with Mcaster1BackDraft alert delivery, and the AI persona engine with Mcaster1Studio.