Trust centre Infrastructure & security Whitepaper

Your email lives on servers in India. Here is exactly where.

Which servers hold your mail, where the backups go, what happens when a server fails, and how your messages are protected. Stated plainly, with the numbers we work to.

Primary servers
Chennai
Adani data center
Backups
Mumbai
AWS S3, ap-south-1
Availability target
99.9%
Multi-node cluster
Data loss window
1 hour
Hourly incremental backups
Rebuild time
4 hours
Restore on a new server
Where your email lives

Both copies of your data stay in India.

Your mailboxes run on a multi-node cluster in the Adani data center in Chennai. Encrypted backups go to Amazon S3 in the Mumbai region. Nothing is kept outside the country.

You

Your team

Devices, the web app and other mail servers sending to your domain.

Primary · Chennai

Adani data center

A multi-node mail cluster holds your live mailboxes. If one node fails, the others keep serving.

Backup · Mumbai

AWS S3

Region ap-south-1. Backups are encrypted and kept apart from the primary servers.

If a server is lostWe rebuild on a new server from the Mumbai backups and restore your data within 4 hours.
Backups and recovery

Backups we test, not just take.

Every customer is backed up the same way. We restore from backup every three months to prove it works.

ScheduleDaily full backup plus hourly incremental backups
LocationAWS S3, Mumbai (ap-south-1), separate from the primary servers
EncryptionBackups are encrypted
RetentionYour full backup is kept for as long as you are a SagaMail customer
Restore testingEvery 3 months
Recovery point (RPO)Up to 1 hour of mail at most
Recovery time (RTO)Up to 4 hours to restore onto a new server
High availability

One failed server does not stop your mail.

SagaMail runs on a multi-node cluster. Work is spread across nodes, so losing one does not take your mailboxes offline.

Our availability target is 99.9%, which allows about 43 minutes of downtime in a 30-day month. Live status and incident history are at status.sagasoft.xyz.

What the cluster does not cover

The cluster sits in one data center. It protects against server failures. If the whole Chennai site were lost, we would restore from the Mumbai backups within the 4-hour recovery time above.

Security of your email

Protected in transit, at rest and at sign-in.

In transit

TLS encryption between your devices, our servers and other mail servers.

At rest

Stored mail is encrypted, and so are the backups.

Domain authentication

SPF, DKIM and DMARC supported for every domain you add.

Inbound filtering

Spam and malware filtering on incoming mail.

Sign-in

Two-factor authentication and single sign-on (SSO).

Access and audit

Role-based access for your team, with audit logs of administrator actions.

Your data and our responsibilities

Your mail is yours, and you can take it with you.

You can export your data at any time. Security is shared, so here is who does what.

SagaMail secures

  • The servers and the Chennai cluster
  • Encryption and backups
  • Spam and malware filtering
  • Platform updates and monitoring

You control

  • Who has an account on your domain
  • Password strength and two-factor sign-in
  • Administrator roles and access
  • What you export and when
Compliance, stated carefully

Keeping primary data and backups in India supports customers with Indian data protection obligations, including the Digital Personal Data Protection Act, 2023. SagaMail does not yet hold an independent security certification. We will list one here when it is issued.

Security review

Need this in writing? Ask us.

We send the full infrastructure and security whitepaper, a security questionnaire and a data processing agreement on request, and we are glad to walk your IT team through them.

security@sagasoft.xyz
Figures on this page describe how SagaMail runs today. Targets are marked as targets.