• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
TechSlack

Slack users can now message anyone they please on the platform, even if they work at different companies

By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
March 24, 2021, 11:52 AM ET

Update: Shortly after this story was published, Slack announced changes to Slack Connect Direct Messages. Jonathan Prince, Slack’s vice president of communications and policy told The Verge: “After rolling out Slack Connect DMs this morning, we received valuable feedback from our users about how email invitations to use the feature could potentially be used to send abusive or harassing messages. We are taking immediate steps to prevent this kind of abuse, beginning today with the removal of the ability to customize a message when a user invites someone to Slack Connect DMs.”

Slack is already the hub of many online workplaces, but it’s looking to expand its reach even further. The popular messaging system has introduced a feature that will allow users to direct message anyone on the platform, even if they work at a different company.

The new service, called Slack Connect Direct Messages, comes with some safeguards to prevent your workday from being inundated by messages from strangers. Users send an invite to anyone they want, assuming they know their work email address. If the recipient accepts, they are added to the invitee’s Slack sidebar.

The offer, right now, is only for Slack’s paying customers, but free users will be folded into the program in the near future. And the interactions are limited to DMs. Users will not be able to view the channels of other companies.

The new feature puts Slack on the same level as tools like Microsoft Teams, Zoom, and WhatsApp, which can be used to chat with anyone, rather than just coworkers.

“Designed to replace email outside your company, Slack Connect DMs allows you to work with external organizations with the same speed and security you’ve come to expect with Slack,” the company said in a blog post.

Messaging is already an incredibly popular feature on Slack. This week, for example, more than 12 million messages will be sent using the service.

Later this year, Slack Connect DMs will also allow multiple organizations to link together and create private business networks, a tool the company says will help with collaboration and efficiency through the sharing of apps like scheduling tool Calendly and DocuSign.

Slack has been one of the pandemic’s business success stories, allowing remote teams to work together effectively. The company went public in the fall of 2019, and last December, Salesforce acquired the company for nearly $28 billion.

About the Author
By Chris MorrisFormer Contributing Writer

Chris Morris is a former contributing writer at Fortune, covering everything from general business news to the video game and theme park industries.

See full bioRight Arrow Button Icon

Latest in Tech

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Tech

Even Nvidia’s own research teams can’t get enough GPUs amid the race for AI computing power
NewslettersEye on AI
Even Nvidia’s own research teams can’t get enough GPUs amid the race for AI computing power
By Sharon GoldmanApril 9, 2026
12 hours ago
You’re looking at the AI revolution all wrong, top economist says: 40% unemployment and a 3-day work week are the same thing
AIdisruption
You’re looking at the AI revolution all wrong, top economist says: 40% unemployment and a 3-day work week are the same thing
By Nick LichtenbergApril 9, 2026
12 hours ago
Zoom CEO Eric Yuan
Successthe future of work
‘I hate working 5 days’: Zoom CEO says traditional work schedules are becoming obsolete—and predicts a 3-day workweek by 2031
By Preston ForeApril 9, 2026
14 hours ago
Nutella seen aboard the Orion spacecraft Integrity.
RetailFood and drink
Nutella jumps on the best product placement money can’t buy: A trip to the far side of the Moon
By Catherina GioinoApril 9, 2026
15 hours ago
kash
Cybersecuritycyber
Trump’s ‘cease-fire’ won’t stop Iranian hackers for long, cyber experts say
By David Klepper and The Associated PressApril 9, 2026
15 hours ago
lego
PoliticsIran
AI-savvy pro-Iran groups troll America with Lego Movie-style propaganda videos mocking American failure
By Sam McNeil and The Associated PressApril 9, 2026
15 hours ago

Most Popular

The U.S. government is spending $88 billion a month in interest on national debt—equal to spending on defense and education combined
Economy
The U.S. government is spending $88 billion a month in interest on national debt—equal to spending on defense and education combined
By Fortune EditorsApril 9, 2026
17 hours ago
Gen Z doesn't want your full-time job. They want several part-time roles, and it's reshaping the entire workforce
Success
Gen Z doesn't want your full-time job. They want several part-time roles, and it's reshaping the entire workforce
By Fortune EditorsApril 9, 2026
20 hours ago
A Meta employee created a dashboard so coworkers can compete to be the company's No. 1 AI token user—and Zuckerberg doesn't even rank in the top 250
AI
A Meta employee created a dashboard so coworkers can compete to be the company's No. 1 AI token user—and Zuckerberg doesn't even rank in the top 250
By Fortune EditorsApril 9, 2026
20 hours ago
2 years ago, Saudi Arabia quietly canceled the ‘petrodollar’ deal with America that wired the world economy for 50 years. Then war broke out in Iran
Energy
2 years ago, Saudi Arabia quietly canceled the ‘petrodollar’ deal with America that wired the world economy for 50 years. Then war broke out in Iran
By Fortune EditorsApril 7, 2026
2 days ago
White-collar workers are quietly rebelling against AI as 80% outright refuse adoption mandates
AI
White-collar workers are quietly rebelling against AI as 80% outright refuse adoption mandates
By Fortune EditorsApril 9, 2026
18 hours ago
Gen Z workers are so fearful AI will take their job they’re intentionally sabotaging their company’s AI rollout
AI
Gen Z workers are so fearful AI will take their job they’re intentionally sabotaging their company’s AI rollout
By Fortune EditorsApril 8, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.