GrapheneOS
The private and secure mobile OS
FactScore™ 0
lockrMail
Protect your inbox and optimize your browsing
Updated February 2026
| GrapheneOS | lockrMail | |
|---|---|---|
| Rating | N/A | 5.0★ |
| Reviews | 0 | 8 |
| Pros | 0 | 13 |
| FactScore™ | 0 | 47.7 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in GrapheneOS — Pros
No unique pros listedBoth tools — Pros
—Only in lockrMail — Pros
Chrome extension Control over inbox Discount code notifications Easy to use Email management Automated filters Coupon code integration Loyalty program management Newsletter management No new inbox Online registration management Productivity improvement Site registration managementOnly in GrapheneOS — Cons
—Both tools — Cons
—Only in lockrMail — Cons
—Details
| GrapheneOS | lockrMail | |
|---|---|---|
| Categories | Safety and Privacy platforms, Security software | Email clients, Safety and Privacy platforms, Chrome Extensions |
| Platforms | Web | Web |
| Became Popular | September 28, 2019 | May 25, 2021 |
| Website | grapheneos.org | lockrmail.com |
Who Should Pick Which?
Choose GrapheneOS if...
- No unique pros listed
Choose lockrMail if...
- Chrome extension
- Control over inbox
- Discount code notifications
With a FactScore™ of 0 vs 47.7, lockrMail leads in community reception. GrapheneOS uniquely offers No unique pros listed, while lockrMail stands out for Chrome extension and Control over inbox.
What Users Say
GrapheneOS
No reviews yet
lockrMail
5 Stars! I first used Lockr to filter out all the unwanted promotional emails, but the chrome extension takes the product to a whole new level. The extension conveniently populates the coupon codes...
LockrMail is a 5-star product and solution to a daily problem growing onus consumers like kudzu. There are moments I consider a) not buying from a merchant or b) stopping my browsing journey becaus...
I’ve been a supporter and user of lockrMail since day 1. I do like that it’s not necessarily a new inbox but also very excited to be able to read emails directly in the extension. Love the approach...
Related Comparisons
Frequently Asked Questions
Which is better, GrapheneOS or lockrMail?
Based on FactScore™, lockrMail leads with a score of 47.7 vs 0. lockrMail has a higher rating of 5.0★ compared to N/A★.
What are the pros of GrapheneOS compared to lockrMail?
GrapheneOS uniquely offers: No unique pros listed.
What are the pros of lockrMail compared to GrapheneOS?
lockrMail uniquely offers: Chrome extension, Control over inbox, Discount code notifications, Easy to use, Email management.
Is GrapheneOS better rated than lockrMail?
GrapheneOS is rated N/A★ from 0 reviews. lockrMail is rated 5.0★ from 8 reviews.
What is the FactScore™ of GrapheneOS and lockrMail?
FactScore™ weighs rating and review volume together. GrapheneOS scores 0 and lockrMail scores 47.7.
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