Mailfox vs Postling

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

Mailfox compared with Postling
Detail	Mailfox	Postling
What it does	Get instant notification of failed emails from your transactional email providers	Private email assistant that sorts Gmail, files the noise and briefs you on what matters, entirely on your Mac
Stage	Not given	Not given
Founded	Not given	Not given
Based in	AT	GB
Pricing model	Paid	Paid
Pricing	One-time payment: 99€	Postling: £79 once (one person, up to 2 Macs); Household: £119 once, up to 5 people; Teams: £79 per person (20% off for 5 people or more). Founding licence: £59 for Postling or £89 for Household. Updates included for the first year; after that £29 a year per person or £45 for a household (optional).
Key features	Instant notifications for email failures Support for Mailgun, SendGrid, Mailjet, Brevo, Resend and Postmark No-code setup in one minute Track multiple email event types Connect unlimited providers Unlimited email event tracking Multiple provider support simultaneously Webhook-based architecture	Keeps only what needs you in inbox Dates go in your calendar Reads attached school letters Works with multiple Gmail accounts Shared briefings Works with existing labels and filters Runs entirely on your Mac
What makes it different	One-time payment model with unlimited lifetime use No API tokens or credentials required Real-time webhook notifications from email providers	Email stays entirely on your Mac with no servers Pay once, no subscription AI runs on device using Apple Intelligence Works with Google Workspace and personal Gmail
Community votes	0	0
DR (Domain Rating by Ahrefs)	12 −17 (down) since last check	6 no change since last check
Trust Flow (Majestic)	9	0
Citation Flow (Majestic)	22	12
Referring domains (Majestic)	91	3

6 details filled in for both companies.

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