Gridinsoft Logo

Letteropener.app Review: Unverified Social Links

September 11, 2026 at 2:23 PM
Suspicious Website
Checked by Website Reputation Checker
Table of Contents
Danger Zone
Risky Territory
Caution Advised
Trusted but Verify
Safe & Secure

Letteropener โ†’ Safety Check

First checked September 11, 2026 at 2:23 PM
Website content and technical signals analyzed
Method: automated checks.
Suspicious Website Gridinsoft currently classifies this site as Suspicious Website. The report highlights no established public user-review history.
Trust signal radar Normalized trust signals for letteropener.app Domain Maturity: 3050 days Domain Maturity Warning Cleanliness: 0 detections Warning Cleanliness Safety Level: 1 negative tags Safety Level Positive Signals: 2 positive signals Positive Signals Popularity: Estimated low traffic without Tranco or social profile data Popularity Trust Zone: .app Trust Zone Operational Signals: 1 detected services Operational Signals Location Credibility: Hosting country US Location Credibility
Figure 1. Trust signal radar for letteropener.app. Larger shaded area indicates stronger trust signals.

How we scored letteropener.app

On-page mentions:
Microsoft Software
Tech signals:
React Platform, Next.js Framework
Positive signals:
  • a long-term domain history (8.4 years)
  • an active SSL certificate (3 months)
  • multi-language support
Negative signals:
  • unclear social-profile authenticity
  • limited independent reputation data
Context signals:
  • content related to software products and downloads
Final destination:
https[:]//web.letteropener.app/
Last checked September 11, 2026 at 2:23 PM by Gridinsoft Trust Model v2.5.4

What is Letteropener?

According to its current page title, letteropener.app presents itself as โ€œLetter Opener โ€“ Open ๐Ÿ“Ž Winmail.dat, MSG and EML files onlineโ€. The sections below evaluate the site-specific reputation and technical findings.

Figure 2. Website screenshot for Letteropener.app. 2026-09-11 17:23:18
This domain was registered May 5, 2018 at 4:00 PM through the company Porkbun LLC and had the owner Gridinsoft privacy protected.

Is letteropener.app safe?

Use caution with letteropener.app. Its current Gridinsoft trust score is 35/100; review the site-specific findings below before use.

Why is letteropener.app marked "Suspicious Website"?

Gridinsoft's current assessment of letteropener.app is based on unverified social-link signals. Context considered alongside those findings includes limited public traffic history. None of the 25 publicly displayed security sources report a warning.

Letteropener Digital Footprints

A structured view of the site's detected themes, page signals, and related online footprint elements.

Microsoft Software
React Platform

This website is built using React, a popular JavaScript library for creating interactive user interfaces.

Multilanguage

The website provides multi-language support, demonstrating international accessibility and commitment to diverse user populations. Multi-language implementation typically indicates professional development standards and global operational scope, representing a positive trust indicator.

Next.js Framework
Established Domain

letteropener.app has maintained active domain presence over time, indicating operational continuity.

Fake Social Media Links - Risk

This site: Automated analysis found social media icons or links that did not lead to recognizable public profiles. This can result from outdated, incomplete, or template-based content. Check the links directly before relying on them to confirm the site's public presence.

Color Guide
  • Requires special attention Marks high-risk findings that should be reviewed first.
  • Exercise caution Highlights areas involving user data, payments, or permissions.
  • Positive indicators Shows trust signals that support the site's reliability.
  • Neutral General context that does not increase or reduce risk on its own.

Domain Information

Created May 5, 2018 at 4:00 PM Updated: May 17, 2024 at 7:30 AM ยท Expires: May 5, 2025 at 4:00 PM
Domain Age 8.4 years
Registrant Gridinsoft privacy protected US (United States)
Registrar Porkbun LLC IANA ID: 1861
Abuse Email [email protected]
Domain Status Client: Delete ยท Transfer Prohibited DNSSEC: UNSIGNED
Top Level Domain .app Generic TLD

Technical Details

HTTP status 308
IP Address 76.76.21.21
Hosting Provider AS16509 Amazon.com, Inc. Walnut, California, US
SSL Certificate YR1 TLS 1.3 ยท Valid for: 3 months ยท from August 14, 2026 at 10:30 PM ยท to November 12, 2026 at 10:30 PM
Name Servers curitiba.ns.porkbun.com
fortaleza.ns.porkbun.com
maceio.ns.porkbun.com
salvador.ns.porkbun.com

Content Analysis

Website title Letter Opener โ€“ Open ๐Ÿ“Ž Winmail.dat, MSG and EML files online
Website description The best solution for opening e-mail files comes on the web. A new way to seamlessly view e-mail files without requiring an App download.
Available languages
Mentioned hosts (4)
analytics.letteropener.com winmail.help web.letteropener.app letteropener.app

Security Analysis

Detection Signatures These signatures are used to generate the security fingerprint below.
Microsoft Software React Platform Next.js Framework Fake Social Media Links - Risk
Verified Services This domain has been verified by the following legitimate services and organizations, confirming authentic ownership and proper email security configuration.
Google Verification Domain ownership verified by Google.
Security Fingerprint Unique identifier based on site analysis

How to block Letteropener.app?

Our Anti-Malware can automatically block access to letteropener.app if it is flagged as malicious.

  1. Install and run the protection.
  2. The program will block flagged domains and remove related threats.

Exclusion

If you believe letteropener.app is safe, you can add it to the exclusion list:

  1. Open Gridinsoft Anti-Malware โ†’ Tools โ†’ Ignore List.
  2. Go to the Internet tab and add letteropener.app.

See detailed instructions for more options.

Are You the Owner?

If you own Letteropener.app and want to challenge the trust score, please submit a review request via portal.gridinsoft.com. There you can claim your profile and add verified company/contact details. If you cannot access the portal, email legal(at)gridinsoft.com with proof of legitimacy and contact details. We never charge website owners for reviews or reconsideration requests. For more information, please review our Disclaimer.

Leave a review

Share your real experience with letteropener.app. Is it a trustworthy site, or did you encounter any issues? The more detail you provide, the more helpful your review is for others!

Publication Tip

- Your feedback helps us improve our security scores.
- Detailed reviews describing your real-life experience have a much higher chance of being published.
- Your email remains confidential.

Gridinsoft Portal
Signed in via Gridinsoft Portal ยท View profile
Your score for letteropener.app

Similar website

Matched by website fingerprint
35
points /100
The score is based on a 1-100 scale, with 100 being the most reputable.
Check another website
Verify the security of domains and services based on 10M+ real websites.
Is This Your Website?
Think your website was scored unfairly? Request a reevaluation and our team will take another look.
Flag for Reevaluation
Have you had a personal experience with Letteropener.app?
Share your thoughts and rate it to help others make informed decisions!
Is This Your Website?
Think your website was scored unfairly? Request a reevaluation and our team will take another look.
Flag for Reevaluation
Have you had a personal experience with Letteropener.app?
Share your thoughts and rate it to help others make informed decisions!