Assignable to your users from Workspace.
12.00 € net/yearProfessional email, compared honestly
An affordable business alternative to Microsoft, Google and more.
Email, calendar, chat and video on a European platform, with native Outlook compatibility and open standards. Pay for shared files and office tools only when your organisation actually needs them.
Savings calculator
See the annual cost for your team.
Choose the number of mailboxes and the service you want to leave. Google Workspace is selected first; compare Microsoft 365 or IONOS whenever you like.
Your Silurian.email annual price107.40 €Pro 5 includes five mailboxes.
Google Workspace annual reference408.00 €Five Business Starter licences at 6.80 €/user/month.
Annual saving300.60 €before tax
Reference values exclude VAT and are not a price guarantee. Google Workspace uses Silurian’s current Business Starter tariff; Microsoft 365 and IONOS references are linked below. Provider prices, promotions and features can change.
This is a genuinely honest comparison: if Google Workspace is a better fit for your organisation, we can provide Google Workspace too.
Like-for-like starting points
What each service includes at its public price.
All amounts below exclude VAT. Silurian.email is billed annually; the comparison annualises public monthly reference prices for clarity.
| Service | Price | Mailbox storage | Communication |
|---|---|---|---|
| Silurian.email Basic | 0.29 €/month3.48 €/year | 15 GB | Outlook, mobile and open standards |
| Google Workspace Business Starter | 6.80 €/user/month | 30 GB/user | Gmail, Calendar, Meet and standard clients |
| Microsoft 365 Business Basic | 5.20 €/user/month | 1 TB/user | Outlook, Exchange, Teams and mobile clients |
| IONOS Mail Basic | 1.50 €/month | 2 GB | Webmail, mobile mail synchronisation and standard email |
| Silurian.email Pro 5 | 1.79 €/user/month107.40 €/year for five | 25 GB initial allocation/user 125 GB shared capacity, plus 100 GB packages freely assignable between Pro mailboxes | Outlook, mobile and open standards |
| IONOS Professional 5 licences | 3.60 €/user/month18.00 €/month for five | 50 GB/user | Professional mail, mobile synchronisation, shared calendars and contacts |
Competitor reference prices and features checked on 6 August 2026 from Microsoft 365 Business Basic and IONOS professional email plans. Google Workspace is compared using the tariff sold through Silurian. Their prices, promotions and features may change.
The practical difference
Pay for storage when someone actually needs it.
Each Pro mailbox starts with 25 GB. The organisation owns a total capacity that its administrator can redistribute, then expands in 100 GB blocks when its real use justifies it.
Choose deliberately
The right product for the work.
Is Silurian.email a replacement for an office suite?
It is an alternative for professional communication. Choose a broader collaboration suite if shared files and online office applications are central to your daily work.
Can we add shared files later?
Yes, as a managed additional service from 50 mailboxes. It is not included by default in every mailbox.
Can we bring an external domain?
Yes. Silurian provides the required DNS records and can configure them automatically when it manages the eligible DNS zone.
Google, Google Workspace, Microsoft, Microsoft 365 and IONOS are trademarks of their respective owners. Silurian is not affiliated with or endorsed by them.
