Postal vs Cendro by Oakbox

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Postal compared with Cendro by Oakbox
Detail	Postal	Cendro by Oakbox
What it does	Open source mail delivery platform for incoming and outgoing email	Private AI that runs on your computer to sort mail, find to-dos and bills, and answer questions across all your email
Stage	Not given	MVP
Founded	Not given	2026
Based in	Not given	US
Pricing model	Open source	Freemium
Pricing	Not given	Not given
Key features	Comprehensive web interface for mail server management and logs Horizontal scalability for mail service Webhooks for delivery notifications Development mode for message testing IP pools for reputation management Spam and antivirus integrations	AI-powered inbox sorting into five categories: Do Now, Needs Decision, Waiting, Information, and Skim later Support for Gmail, Outlook, Microsoft 365, Yahoo, iCloud, Fastmail, and IMAP Encryption with passphrase or computer login Search and read archived PST and MBOX files Local AI model selection based on computer hardware Read-only access with no modifications to mailboxes Project organization with mailboxes, keywords, notes, and pinned emails
What makes it different	Open source alternative to Sendgrid, Mailgun and Postmark Self-hosted on your own infrastructure Full control over mail delivery and data	AI runs entirely on your computer with no data sent to external servers or AI companies Works offline with your existing email providers and archives AI model automatically chosen based on your computer's capabilities Answers with direct citations to specific emails and attachments
Community votes	0	0
DR (Domain Rating by Ahrefs)	52 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	11	0
Citation Flow (Majestic)	37	0
Referring domains (Majestic)	331	0

4 details filled in for both companies.

More alternatives to Postal More alternatives to Cendro by Oakbox