Free and open source · A product of 14 Technologies
Business email on your domain. Free.
Give every person and department a professional address like you@yourcompany.com. One fast inbox for the whole team, a phone app with instant notifications, calendar, booking and file Drive, running on your own account. Free with 10 mailboxes, no card and no trial.
- 10 mailboxes free
- Open source
- Your data, your account

Sound familiar?
Company email shouldn’t be this expensive.
Paying for every inbox
Google Workspace and Microsoft 365 charge per user, every month. Ten people cost you ten subscriptions.
Free Gmail looks unprofessional
Clients trust yourname@yourcompany.com more than a free address they could have made themselves.
Shared passwords
Everyone logs into info@ and sales@ with the same password. Nobody knows who replied.
Email that can switch off
A failed card payment and your whole team loses email in the middle of a deal.
MailOS gives your company every address it needs, on your own domain and your own account, for one plan price.
See it in action
Try MailOS right here.
The real MailOS layout, live in your browser. Open an email, star it, search, switch mailboxes, press Compose and Send, or pick a colour.
Works the same on your phone: tap the menu, open an email, tap Back.
For everyone
An inbox your team will actually like.
Fast conversations, instant search, labels, snooze, follow-up reminders and read receipts. Send immediately with a tick, or schedule for later.
- Addresses on your own domain
- Conversations, search, snooze and labels
- Spam filter and safe remote images
- Signatures and profile pictures for every mailbox
On every phone
Install it like an app.
Add MailOS to the home screen on Android or iPhone. New mail arrives as a notification, even when the app is closed.
- Installs from the browser, no app store needed
- Instant push notifications
- Live inbox updates while open
- Gmail, Outlook and Thunderbird access with the MailOS bridge
For your team
Shared inboxes without shared passwords.
Give sales@, support@ and info@ to the right people. Everyone signs in with their own login and sees who replied.
- Separate logins per person (Pro and Team)
- Shared inboxes with access you control (Team)
- Forwarding and routing rules
- Admin panel for domains, mailboxes and accounts
Beyond email
Calendar, booking page and Drive.
Plan meetings with invitations, share a public booking link so clients pick a free slot, and keep files in a private Drive. An AI assistant can search mail and draft replies.
- Calendar with invitations and reminders
- Public booking page
- File Drive with sharing
- AI assistant for drafts and search
Built for businesses in Pakistan
Professional email. Fair pricing.
No per-user fee
Pay for the plan, not for every person. Add your next hire without a new monthly bill.
Your domain, your brand
Your company name and logo on every mailbox, in your colours.
Your data stays yours
Mail is stored on your own Cloudflare account, protected by Cloudflare’s network.
Fast everywhere
Runs on Cloudflare’s global network, so the inbox opens fast on any connection.
Works on your phones
Android, iPhone and desktop, with instant notifications.
Help on WhatsApp
14 Technologies sets up your domain and mailboxes with you and answers on WhatsApp.
Plans
Free covers most teams. Upgrading is optional.
Start free
Set up MailOS in about 20 minutes.
You need a domain and a free Cloudflare account. Deploy from GitHub, follow the illustrated guide, and create up to 10 mailboxes free. Prefer help? We set up your domain and mailboxes with you on a call.
Optional upgrades
Upgrade only if you need to.
Free is enough for most small teams. If you grow past 10 mailboxes, Pro or Team adds more mailboxes, logins, domains and Drive space. A licence key unlocks them; nothing is reinstalled.

MailOS Free
Rs 0 forever
- 10 mailboxes
- 1 login, 1 domain
- 1 GB Drive per person
- Web and phone app
See Pro and Team options
MailOS Pro
Annual
Rs 10,999 50% off
Rs 5,499 per year
Just Rs 458 / month
about $20
Our most popular plan
Choose planMailOS Pro includes
- 50 mailboxes on your own domain
- 10 team logins, each with their own password
- 3 domains
- 25 GB Drive per person
- AI email assistant: drafts, summaries and search
- Your company branding and logo
- Auto-forwarding to Gmail or Outlook
- Email support from 14 Technologies
MailOS Team
Annual
Rs 26,999 50% off
Rs 13,499 per year
Just Rs 1,125 / month
about $50
Our most popular plan
Choose planMailOS Team includes
- Unlimited mailboxes
- Unlimited team logins
- Unlimited domains
- 100 GB Drive per person
- Shared team inboxes for sales@, support@ and info@
- AI email assistant: drafts, summaries and search
- Branding, logo and auto-forwarding
- Priority WhatsApp support from 14 Technologies
Prices in Pakistani rupees. Card payments are charged in US dollars by our payment partner; bank transfer is in rupees. The free version needs no payment or licence. Already a customer? Renew or upgrade from My Account.
Questions businesses ask.
Is there a free plan?
Yes. MailOS Free includes up to 10 mailboxes on your domain with the full web and phone app. Upgrade to Pro or Team when you need more mailboxes, separate logins or shared inboxes.
Do I pay per user like Google Workspace?
No. You pay for the plan, not per inbox. Hosting runs free on your own Cloudflare account; sending is free up to 3,000 emails a month through Resend.
Can my team use Gmail or Outlook?
Yes. With the MailOS bridge, Gmail, Outlook, Apple Mail and Thunderbird can receive and send with your MailOS addresses using an app password.
What do I need to start?
A domain name (for example yourcompany.com) and a free Cloudflare account. The setup guide walks you through it, or we do it for you.
Will my current email stop working?
You choose the moment to switch. We can import your old emails from your current provider so nothing is lost.
Is MailOS really free?
Yes. MailOS is open source (AGPL licence) and free to use with up to 10 mailboxes, with no time limit and no card. Upgrading is only needed for more mailboxes or the extra features of Pro and Team.
How do I activate Pro or Team?
After you buy, your license key arrives by email. In MailOS go to Admin → Upgrade, paste the key and press Activate. Extra mailboxes and logins unlock immediately.
What happens when my plan ends?
We email you before it ends. Your mail and mailboxes are never deleted; Pro and Team features pause until you renew.
Ready for professional email?
Start free with 10 mailboxes, or let us set up your domain and team in one call.