MailOnce vs Quartz
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
MailOnce compared with Quartz
| Detail | 
MailOnce | 
Quartz |
|---|
| What it does | Temporary email for verification messages and OTP codes in a browser-scoped, auto-expiring inbox
| AI-native email for Mac that prioritizes important messages and drafts replies in your voice
|
|---|
| Stage | Not given
| MVP
|
|---|
| Founded | Not given
| Not given
|
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| Based in | Not given
| CA
|
|---|
| Pricing model | Free
| Free
|
|---|
| Pricing | Not given
| Free during public beta
|
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| Key features | - Instant temporary email creation without signup
- Auto-expiring inbox after one hour, extendable to three hours
- Automatic OTP code detection and copying
- Verification link detection and opening
- Custom email address selection
- Secure device linking with QR code approval
- Real-time message delivery without manual refresh
- Multiple domain options for custom addresses
- Safe email change with confirmation step
| - Local AI processing on Apple Silicon
- Automatic message categorization by importance
- AI-generated email drafts in your voice
- Smart inbox organization with collapsible categories
- Gmail integration
|
|---|
| What makes it different | - No account creation required to use the service
- Privacy-focused design with clear lifecycle boundaries
- Security claims tied to implemented controls, not empty promises
- Designed for practical utility rather than unnecessary features
| - Runs AI models locally on your device, not on company servers
- Email drafts match your personal writing style and tone
- Mail never uploaded to external AI providers
|
|---|
| Community votes | 0 | 0 |
|---|
| DR (Domain Rating by Ahrefs) | 2 ▼ −1 (down) since last check | 6 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 4 | 4 |
|---|
| Citation Flow (Majestic) | 22 | 23 |
|---|
| Referring domains (Majestic) | 10 | 64 |
|---|
4 details filled in for both companies.
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