# Proton Mail vs Sekur

Source: https://nachonacho.com/software-comparisons/proton-mail-vs-sekur
Last updated: 2026-11-08

Proton Mail suits teams that want encrypted business email within a broader productivity workspace; Sekur suits organizations that want email, private messaging, and VPN access in a tightly controlled Swiss-hosted environment. Both offer business email, but their plans emphasize different needs: Proton adds collaborative documents and meetings, while Sekur offers dedicated messaging and communication controls.

## At a glance

| | Proton Mail | Sekur |
| --- | --- | --- |
| Broader offering | Mail, calendar, files, documents, meetings, VPN, and passwords | Mail, private messaging, and VPN |
| Private messaging | Not published | SekurMessenger with private groups and self-destruct timers |
| Email starting price | Mail Essentials: $6.99/user/month, billed yearly | SekurMail Private: $50/user/month |
| Suite starting price | Workspace Standard: $12.99/user/month, billed yearly | Private Bundle: $95/user/month |
| Email storage | 15 GB to 3 TB per user, by plan | 150 GB to 500 GB, by SekurMail tier |
| Custom domains | 3 to 20 included, by business plan | Included with Operational and Command mail tiers |
| Desktop email clients | Outlook, Thunderbird, and Apple Mail via Bridge | Not published |
| File transfers | Secure file sharing through Proton Drive | Up to 5 GB with SekurMail |
| VPN allowance | 1 or 10 connections per user, by plan | 5 devices per account; Swiss IP only |
| Deployment | Proton-hosted services | Swiss-hosted; on-premise deployment offered |
| Support | Priority business support | Live chat, email, and knowledge base |

## Which to choose

### Choose Proton Mail if

- Teams replacing email and productivity tools together
- Businesses using Outlook, Thunderbird, or Apple Mail
- Organizations needing substantial storage per user
- Teams that want listed annual per-user workspace pricing

### Choose Sekur if

- Teams needing private group messaging alongside email
- Organizations prioritizing controlled external communications
- Users requiring Swiss-only VPN routing
- Businesses seeking SekurMail with administrative controls

## Verdict

Pick Proton Mail when your team needs custom-domain email alongside shared files, documents, meetings, and familiar desktop email clients. Pick Sekur when controlled recipient access, private group messaging, and Swiss-only VPN routing matter more to your workflow. Compare the specific tiers you would buy: Proton’s Mail Essentials focuses on email and calendar, while its fuller workspace tools require a Workspace plan; Sekur sells mail separately or with Messenger and VPN.

## Questions

### Which is the better fit for email and office collaboration?

Proton Mail is the closer fit if a business also wants shared files, collaborative documents, spreadsheets, and video meetings. Those broader tools are part of Proton’s Workspace plans; Sekur concentrates on controlled email, messaging, and VPN access.

### Can I buy encrypted email without the full suite?

Yes. Proton sells Mail Essentials for business email and calendar, while Sekur sells SekurMail separately from SekurMessenger and SekurVPN.

### Which offers a dedicated private messenger?

Sekur offers SekurMessenger, with private group chats, encrypted text and voice messages, and self-destruct timers. Proton Mail’s listed business workspace tools do not include a comparable dedicated messenger.

### Can either service use my business email domain?

Yes. Proton Mail Essentials includes three custom email domains, with higher allowances on Workspace plans. Sekur lists custom-domain support on its Operational and Command mail tiers.

### Can I keep using Outlook or Apple Mail?

Proton Mail supports Outlook, Apple Mail, and Thunderbird through Proton Mail Bridge on eligible paid plans. Sekur does not publish a corresponding desktop email-client integration.

### How do their VPN offerings differ?

Proton lists one VPN connection per Mail Essentials user and ten per Workspace user. Sekur lists five devices per VPN account and Swiss-only IP routing.

### Which has more email storage?

Proton’s business plans list 15 GB per user on Mail Essentials, 1 TB on Workspace Standard, and 3 TB on Workspace Premium. SekurMail lists 150 GB on Private, 250 GB on Operational, and 500 GB on Command.

### What are the entry prices for business email?

Proton lists Mail Essentials at $6.99 per user per month when billed yearly. Sekur lists SekurMail Private at $50 per user per month.

## Product pages

- Proton Mail: https://nachonacho.com/product/protonmail
- Sekur: https://nachonacho.com/product/sekur-private-data