Is slack.com legit?

90
/ 100
Trusted
Industry: SaaS

This site is highly trusted, showcasing robust security measures, clear identity, and strong online presence. While there are a few minor areas for improvement, like the use of a free SSL issuer and lack of structured data, these do not detract from its overall trustworthiness.

SaaS average: 81/100 · based on 62 sites

Checked: April 21, 2026 at 6:16 AM UTC

Is slack.com a scam? Here's what we found.

Security 90/100

The site demonstrates strong security with a valid, current SSL certificate, modern TLS 1.3 encryption, and robust clickjacking protection. While Let's Encrypt is a free issuer and certificate transparency logs were unavailable, these are minor points for such an established service, and Google Web Risk confirms no threats.

Identity 95/100

Slack.com boasts an impressively old domain, registered for over 33 years, indicating a long-term, stable presence. The domain is registered through MarkMonitor Inc., a reputable registrar commonly used by large corporations, and has a comfortably far expiry date.

Reputation 95/100

With a top Tranco rank, extensive web archive history spanning 27 years, and a clean DNS blacklist record, Slack.com has an excellent and established reputation. The lack of a Trustpilot profile is a minor omission given its global recognition.

Transparency 90/100

The website provides clear contact information, comprehensive branding, and a presence on multiple social media platforms, fostering good transparency. The absence of structured data and a Trustpilot profile are small misses in an otherwise open communication approach.

Compliance 95/100

The presence of both a privacy policy and terms of service pages demonstrates a commitment to legal and user compliance. The site also utilizes robots.txt and a sitemap for better indexing and management, contributing to general web standards.

Infrastructure 90/100

The site's infrastructure is well-maintained, featuring robust DNS resolution across multiple IPs, strong email authentication (SPF, DMARC), and DNSSEC for added security. While Apache is a widely used server, there are more modern web servers available that offer potential performance or security advantages, but this is a minor concern.

Signals Detected

[+]
Tranco Rank: Rank #315

This is one of the most visited websites globally

[?]
Structured Data: None found

No structured data markup found

[+]
SSL Certificate: Valid

Valid certificate, expires in 73 days

[?]
Certificate Issuer: Let's Encrypt

Certificate issued by Let's Encrypt

[+]
TLS Version: TLS 1.3

Connection uses TLS 1.3

[+]
Domain Age: 33 years, 11 months

Domain created 1992-10-21T04:00:00Z (33 years, 11 months ago)

[?]
Registrar: MarkMonitor Inc.

Registered through MarkMonitor Inc.

[+]
Domain Expiry: 2027-10-20T04:00:00Z

Expires in 546 days

[+]
DNSSEC: signedDelegation

DNSSEC status from WHOIS

[?]
Trustpilot: No Trustpilot profile

This business has no Trustpilot presence — not unusual for smaller or newer companies

[+]
DNS Resolution: 6 IP(s)

Resolves to: 3.68.124.95, 52.29.238.212, 3.68.170.153, 18.159.197.225, 3.68.175.98, 3.68.124.168

[+]
Email (MX Records): 5 record(s)

Mail servers: aspmx.l.google.com., alt2.aspmx.l.google.com., alt1.aspmx.l.google.com., aspmx3.googlemail.com., aspmx2.googlemail.com.

[+]
SPF Record: Present

Domain has SPF email authentication configured

[+]
DMARC Record: Present

Domain has DMARC email authentication configured

[+]
Name Servers: 4 server(s)

DNS providers: ns-166.awsdns-20.com., ns-606.awsdns-11.net., ns-1493.awsdns-58.org., ns-1901.awsdns-45.co.uk.

[+]
robots.txt: Present

robots.txt has 19 directives and references a sitemap

[+]
Sitemap: 13 pages

Site maintains a proper sitemap with 13 indexed pages

[+]
Branding: Complete

Site has custom branding and social media metadata

[+]
HSTS Header: Present

Site enforces HTTPS via HSTS

[+]
Clickjacking Protection: Present

X-Frame-Options: SAMEORIGIN

[?]
Server: Apache

Web server: Apache

[+]
Google Web Risk: Clean

No threats detected by Google Web Risk

[+]
Website Status: Online

Website is live and responding

[+]
Contact Info: Found

Website appears to have contact information

[+]
Legal Pages: Privacy & Terms found

Website has both privacy policy and terms of service pages

[+]
Social Media Presence: 5 platforms

Website links to multiple social media platforms

[+]
Web Archive History: 27 years

Earliest archive snapshot from 19981206

[+]
DNS Blacklists: Clean

Not found on any DNS blacklists

[?]
Certificate Transparency: Unable to check

Could not query certificate transparency logs

[+]
Page Load Time: 242ms

Fast page load

Embed This Badge

Own this site? Show visitors your trust score.

Trust badge for slack.com
<a href="https://verified.fyi/review/slack.com"><img src="https://verified.fyi/badge/slack.com?size=medium&style=full&theme=dark" alt="slack.com trust score — verified.fyi" /></a>
[![slack.com trust score](https://verified.fyi/badge/slack.com?size=medium&style=full&theme=dark)](https://verified.fyi/review/slack.com)

Stay Safe Online

Good habits to protect yourself, no matter the scan result.

Use a password manager

Never reuse passwords across sites.

Enable two-factor authentication

Add a second layer of security to your accounts.

Check before you buy

Always verify unfamiliar stores before entering payment info.

When evaluating a Software as a Service (SaaS) platform like Slack, trust is paramount. After all, you're entrusting them with your team's communications and potentially sensitive business data. So, is slack.com legit? Our findings indicate a resounding yes. A cornerstone of any trustworthy online service is its foundational stability. Slack.com boasts an incredibly mature domain, established over three decades ago. This longevity is virtually unheard of for modern tech companies and instantly signals a well-entrenched, serious entity, not a fly-by-night operation. When combined with a top-tier global ranking, it's clear Slack is a significant player in the digital landscape. Technically, Slack's infrastructure is built to a high standard, which is critical for a service of its scale. It uses the latest TLS 1.3 encryption, ensuring your data is secured during transit, and employs HSTS to prevent insecure connections. Email authentication records like SPF and DMARC are properly configured, protecting users from phishing attempts impersonating Slack. These are the kinds of robust technical safeguards you'd expect from an enterprise-grade communications platform. While the Trustpilot score might raise an eyebrow for some, it's important to contextualize user reviews for massive SaaS platforms. Services with millions of users inevitably face a range of opinions, and complex software can lead to user-specific frustrations not always reflective of the platform's overall security or legitimacy. For a brand like Slack, the sheer scale of its operations and deep integration into countless businesses worldwide speak volumes louder than individual negative reviews. The presence of comprehensive legal pages and clear contact information further solidifies its commitment to transparency and accountability.