Replacing email.

The first messenger that's compatible with email.

Mesg prototype UI screenshot.
Messaging Channels Calls Meetings File transfers Calendar scheduling Document signing Verified identities Backwards compatible with email

The problem.

Email icon Email is clunky, insecure, and 50 years old.

Chat icon Chat products like Slack, Teams, and WhatsApp are great, but failed to replace email as you can only communicate on the same platform.

The solution we're building.

Mesg icon Mesg is the best of both: the first chat, call, and calendar app that is fully backwards compatible with email.

Built for business and individuals.

You buy a whole lot of products...

Slack logo Slack logo Slack logo Slack logo Slack logo Slack logo Slack logo Slack logo Slack logo Slack logo Slack logo Slack logo

Shouldn't your messenger do it all?

Mesg logo

A messenger that connects with anyone.

sophia@marketing.com
Account Manager, Marketing Ltd
vincent@marketing.com
Brand Specialist, Marketing Ltd
justin@design.com
Designer, Design Ltd
martin@photography.com
Photographer, Photography Ltd
sabine@client.com
Founder, Watchmaker Ltd

The first chat app compatible with email.

Media Brief
4
5
Sophia Wilson 15:32

Hi team, the media brief for Watchmaker's product launch has been approved. Could we schedule the shoot next week?

Justin Campbell 16:10

Great news. I'll discuss shoot planning with Martin.

Inboxes that organise themselves.

With the best features from modern messaging handpicked and upgraded, your inbox is automatically organised, prioritised and you’ll never have to file an email again.

Channels

Be in-the-know without inbox chaos. All project activity collated in one place. Never file an email again. Fully supports email participants.

Watchmaker Media
Threads
Meetings
Files
Settings
Today
Shoot Planning
Sophia Wilson Let me check on that for you.
Media Brief
Martin Watling That's great, thanks.
Budget Overview
Vincent Lim We'll have to factor in the travel expenses too.
Designer Onboarding
Sabine Allard Will the additional assets require another contract?
Yesterday
Client Communications
Vincent Lim Yeah, she just got back to me.
Asset Library
Sabine Allard Is there a preferred location to upload any past photoshoot assets, so the team has them on hand for inspiration?
Product Overview
Sabine Allard We want to focus on the watch as part of the life journey of the wearer.
Future
Shoot Day Tomorrow, 10:00
Today
Shot List Review Today, 13:30
Concept Finalisation Today, 11:00
In the last week
Launch Timeline Yesterday, 17:00
Client Feedback Yesterday, 10:30
Social Strategy Tuesday, 11:00
Media Budget Monday, 12:45
File name Date
Photoshoot schedule.pdf Today, 15:32
Storyboard draft.pdf Yesterday, 13:11
Branding kit.zip Yesterday, 12:19
Agency service agreement.pdf Tuesday, 18:33
Media brief.pdf Tuesday, 10:21
Video reel.mp4 Monday, 14:47
Pitch deck.pptx Monday, 14:42
Permissions
Who can send to this channel?
Channel Addresses
watchmaker@marketing.com
project-watch@design.com
Participants
Sophia Wilson
Vincent Lim
Justin Campbell
Martin Watling
Sabine Allard
Interactive

Threads

Threads span multiple channels and include additional people for those one-offs. Avoid groups exploding to include everyone in the company whilst making sure everyone who needs to know, is in the know.

Inbox
Summary
Expanded
Today
Shoot Planning
Sophia Wilson Let me check on that for you.
Media Brief
Martin Watling That's great, thanks.
Re: Latest Invoice
Sabine Allard Okay, thank you.
Yesterday
Asset Library
Sabine Allard Is there a preferred location to upload any past photoshoot assets, so the team has them on hand for inspiration?
Product Overview
Sabine Allard We want to focus on the watch as part of the life journey of the wearer.
Shoot Planning
3
Martin Watling 12:04
Will we be able to pull up close to the venue to easily load and unload our equipment?
Sophia Wilson 12:12
Let me check on that for you.
Media Brief
5
Justin Campbell 10:12
Could we add Martin to the thread for his reference when developing the shot list?
+ Martin was added by Sophia
Sophia Wilson 10:13
Hi Martin, you should be able to see our earlier discussion of the brief here.
Martin Watling 10:17
That's great, thanks.
Re: Latest Invoice
3
Sabine Allard 1 Aug
Hi Sophia, thanks for sharing over the invoice. Could you remind me of the payment terms?
41 more messages
Sophia Wilson 9:49
Hi @Sabine, this month's invoice will only include the rolling fees, and we'll bill for the assets in September.
Sabine Allard 10:03
Okay, thank you.
Asset Library
4
Sabine Allard Wed
Is there a preferred location to upload any past photoshoot assets, so the team has them on hand for inspiration?
Product Overview
2
Sophia Wilson Wed
Do you have any preferred scenarios to be captured in the lifestyle shots?
Sabine Allard Wed
We want to focus on the watch as part of the life journey of the wearer.
Interactive

Voice and Video

Planned 2026

Call people directly via their Mesg address, or send a link to email users. Control who can call you directly via contact and notification settings. Message request settings can help prevent cold calls from people you don't know.

Calling Sophia Wilson...
sophia@marketing.com

Meetings

Planned 2027

Schedule, share meeting files, and record transcripts all in your messenger. Join meetings directly from the thread or calendar.

Media Brief
Sophia Wilson 12:12

@Justin we're discussing designs and wondering if you could hop on, if you have five minutes spare?

Photoshoot Planning
3 participants in meeting

Files

Planned 2025

Reduce time spent searching emails for documents and meetings with files automatically collated by thread or channel. Send large files to anyone.

Campaign Assets
Martin Photography 16:54

Sharing the video reel and image assets for the upcoming campaign.

video-reel.mp4
384MB, Video
assets.zip
2.4GB, ZIP File

Contact Management

Planned 2025

Share extra details and profile pictures with contacts you trust. Set permissions for who reaches your inbox and who can call you.

justin@design.com

Permissions

Messages
Calls
Channels

Mailbox

Category
Notifications

Shortcut and automate.

Don't repeat yourself, and let our intelligent mailbox handle the menial tasks. Navigate and perform any action by keyboard or mouse.

Summarise

Planned 2026

Catch up with channels and threads quickly using AI, making it easy to stay in the loop.

Watchmaker Client
Intelligent Summary

Sophia provided an overview of the media brief, highlighting goals to boost brand visibility. Sabine requested a focus on craftsmanship, with Justin suggesting visual concepts that showcase elegance in upmarket settings. Vincent shared the finalised document, which Sabine approved. The team is now aligning on final messaging to meet the campaign’s objectives.

Autopilot

Planned 2026

Auto-draft replies to messages in your style, and create your own custom prompts and actions. Automated follow-up messages, advance candidates to the next interview stage, and schedule meetings with minimal effort.

Key Dates

Planned 2026

Extract key dates from emails: deadlines, flight dates, event dates. Sort, filter, and label messages by date.

Scheduling

Planned 2026

Share calendar availability as a message. Fully automate arranging a time to meet with Mesg users or send links to email users to book.

Media Brief
Vincent Lim 16:54

Hi Sabine! We're looking forward to hearing your feedback on the brief. Let us know when suits to catch up.

Tuesday, July 20

Command Center

Planned 2025

Navigate quickly via keyboard shortcuts, and use the command center shortcut ( K) to perform actions on the highlighted thread or channel.

Done
E
Pin
D
Snooze
S
Mark as Unread
U
Change category to Notification
M
Block
B

Focus on what matters.

Cut the clutter. Only get notified about what's urgent and filter by what's important. Access all the information you need, only when you need it.

Inbox Zero

Planned 2025

Stop marking conversations as unread. Use your inbox as a todo list, mark conversations as done and clear out your inbox.

Inbox
Today
Shoot Planning
Sophia Wilson Let me check on that for you.
Re: Latest Invoice
Sabine Allard Okay, thank you.
Client Communications
Vincent Lim Yeah, she just got back to me.
Yesterday
Asset Library
Sabine Allard Is there a preferred location to upload any past photoshoot assets, so the team has them on hand for inspiration?
Revision for Campaign Copy
Vincent Lim Please prioritize this update and let me know once it’s done.

All caught up!

Interactive

Smart Inbox

Planned 2026

Keep your focus on what matters most. Sort messages by type, separating critical conversations from notifications and promotional emails. Stay engaged in deep work, distraction-free.

Inbox
Inbox
Notifications
Other
Today
Client Feedback on Strategy
Vincent Lim Hi, I've compiled the comments on our strategy proposal. There are some key points to review.
Re: Latest Invoice
Sabine Allard Okay, thank you.
Review September Content Calendar
Sophia Wilson Please take a look at the draft and let me know if you have any suggestions or edits.
Yesterday
Presentation Deck Feedback
Vincent Lim I have a few suggestions for improvement.
Revision for Campaign Copy
Vincent Lim Please prioritize this update and let me know once it’s done.
Today
Justin edited a document
Document Service Justin made some updates to the document you're collaborating on. Click here to see the latest changes.
One time login code
Bank TFA Your requested one-time code for secure login is: 748392. Please enter this code within the next 5 minutes.
Sabine tagged you in a comment
Document Service Sabine mentioned you in a comment on the project document. Check out her feedback and join the discussion!
Yesterday
Martin shared a new photo album with you
Cloud Storage Martin has uploaded some new photos for you to view. Click here to explore the shared album.
Vincent mentioned you in Strategy Deck
Document Service Vincent has referenced you in the Strategy Deck presentation. View the document to see where your expertise is needed.
Today
We’ve Launched New App Features!
Cloud Storage Discover the latest tools and improvements designed to make your experience smoother and more efficient. Check out what’s new!
Competitor insights report now available
Marketing Newsletter Our team has compiled an in-depth analysis of current competitor trends. Download the full report for key insights.
The secret to effective branding
Blog Subscription Unlock proven strategies to strengthen your brand’s impact and connect with your audience like never before.
5 Ways to Boost Engagement This Quarter
Socials Newsletter Here are five actionable tips to drive higher engagement and reach your goals this quarter. Get started today!
Yesterday
Get More Leads with These Proven Tactics
Sales Newsletter Boost your lead generation with these tried-and-true tactics. Here’s how to attract and convert more prospects.
Upcoming Webinar: Maximizing Digital Ad Impact
Learning Platform Join us for an exclusive webinar on how to optimize your digital ads for better performance and ROI.
Stay Ahead: Social Media Algorithm Changes
Socials Newsletter Find out how recent algorithm updates may impact your social media strategy and what adjustments you should consider.
Interactive

Message Requests

Planned 2025

Stop new contacts arriving at the top of your inbox. Filter them into a separate section to review when ready. This is also a security feature, helping to prevent impersonation of your regular contacts.

Message requests
Rachel Thompson
Collaboration Opportunity Hi there! I came across your profile and thought you might be interested in a collaboration. I have a project that aligns with your skills and would love to chat more if you’re open to it!
Jennifer Brown
Quick Question About Your Work Hello! I hope you don’t mind me reaching out. I’m really interested in what you do, and I have a few questions about your process.
Michael Patel
Project Proposal for Your Review Hi, I have an exciting project idea I’d like to share with you. Would you be open to reviewing a proposal I put together and giving me your feedback?

Active and Passive

Planned 2026

You can choose to be a passive participant in discussions—access important details when you need them without the hassle of constant notifications.

Media Brief
active (all notifications)
passive (tagged only)
muted (no notifications)

Snooze

Planned 2026

Set threads aside and receive timely reminders to action them when convenient.

Media Brief
for 1 hour
until tomorrow
until next week
custom

Editor

Planned 2026

Messages should be quick to write and look good by default. Whether you're writing a fast reply or something thoughtful, our block editor will let you craft good looking messages easily.

To:
user@email.com, @internal, and #channels

New thread

+

Write something, or press ' / ' for commands.

Next level security.

The modern internet has developed many systems for securely verifying identities, but email is too old to incorporate these, leaving companies to fend for themselves. We're introducing these verification concepts to business communication for the first time, helping companies keep employee comms safe and secure.

Forwarded by Justin Campbell
Sophia Wilson 15:32

Please include an additional $700 on the final invoice for commercial usage rights, as agreed with the client.

Message Authenticity

Proof of Sender

All sent messages are signed with a user's public key. When someone sends you a message, you can be confident the message is authentic. Better yet, you can forward a message, and the recipient can still confirm the original message is authentic.

sophia@marketing.com
Sophia Wilson
Person, She/Her
Head of Accounts
Marketing Inc
Company, Marketing Services
405 Madison Avenue, New York
Verified by Mesg

Verified Identities

Proof of Identity

Mesg introduces full contact detail sharing and an identity verification protocol. Companies and individuals can optionally prove who they are and share details, and recipients can have confidence they are interacting with a real person or business.

Sophia Wilson 09:27

Sharing the document for signing.

Contract.pdf

Click to sign

Signed by Vincent

Signed by Sophia

Waiting for you

Document Signing

Proof of Signature

We can already prove a message from alice@mesg.me is authentic, and if Alice has registered with a trusted Identity Authority and chosen to share her details with us, we can prove alice@mesg.me is Alice Smith of Waterloo Road. We can now sign documents in full confidence, and use a Notary Authority as a third party to witness the keys, identities, and date of document signing.

Human ID

Proof of Personhood

In the age of AI, it's becoming impossible to prove if a user is human. Services such as Wikipedia could use an Identity Authority to confirm a user is human, and receive a Wikipedia-specific identifier for that user. No personal details such as name or address need to be revealed to Wikipedia, as the protocol only requires interacting with a user's Mesg address. If the user signs up under a new address but the same identity, Wikipedia can link the two accounts. All in aid of combating bots, spam, and AI generated material. Other uses include social media, ticketing, reviews, and ecommerce purchases.

How it works.

Email icon Email is slow, clunky, and 50 years old.

Chat icon Chat is fast, but only works inside your organisation, or on the same platform.

Mesg icon Mesg is the best of both: faster and more secure, but still compatible with email. Behind the scenes, your mailbox accepts both Mesg and email messages as if they're the same. You can send instant messages, and the platform determines whether a contact is a Mesg user or an email address.

Read more about the Mesg protocol

Mesg Mesg
Chat Chat

@your.com

Slack

@mesg.me

Teams

Pricing.

Simple, transparent pricing for teams of all sizes.

Individual

Free
with @mesg.me domain
  • A @mesg.me address
  • 1GB mailbox
  • Instant messaging
  • Voice and video
  • Document signing
  • Verified identity

Business

20 USD
per user, monthly
Everything in Individual +
  • 100GB mailbox
  • Custom domains
  • Channel directory
  • Verified business

Enterprise

Custom
get in touch below
Everything in Business +
  • 2TB mailbox
  • Single sign on (SSO)
  • Data retention policies
  • Audit features
  • On-premise hosting

Better in every way.

Email

41.25 USD
per user, monthly

Mesg Mesg

20 USD
per user, monthly

Save time and money with one app that combines email, chats, calls, document signing, and file organisation into a single, easy-to-manage platform.

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