Security
Security for everyday business mail
Nexudo Mail combines filtering, transport encryption, DNS authentication, and admin controls so teams can trust their @yourdomain.com addresses — without turning mail into a full-time security project.
Spam filtering
Spam protection is included on every Nexudo Mail plan to reduce junk and phishing before messages reach inboxes.
Encryption in transit
Mail is protected with modern TLS while moving between clients, servers, and peer mail systems.
Stronger authentication
2FA and security key options on Starter and above help protect admin and mailbox access.
DNS authentication
We guide MX, SPF, DKIM, and DMARC setup so your domain is harder to spoof and easier to deliver.
Admin controls
Manage users, groups, and access from the domain admin panel with plan-based uptime commitments.
Shared responsibility
You control who has mailbox access and how the domain is used. We provide the platform controls and policies to operate safely.
How mail is protected
Inbound messages are filtered for spam and common abuse patterns, then delivered to the correct mailbox. Between clients and servers — and when talking to other mail systems — connections use TLS where peers support it. Admins manage who can sign in and which addresses exist on the domain.
Higher plans add options such as end-to-end encryption features and stronger API access for automation. Enterprise conversations can include white-label and custom control requirements. Compare capabilities on Features and Pricing.
DNS authentication: MX, SPF, DKIM, DMARC
Correct DNS is essential for deliverability and spoofing resistance. During setup we help you publish:
- MX — where other servers send mail for your domain
- SPF — which hosts are allowed to send as your domain
- DKIM — cryptographic signatures that prove messages were authorized
- DMARC — policy that tells receivers how to treat failed authentication
Step-by-step answers live in the FAQ. If mail is delayed or landing in spam after a migration, include your domain and recent examples when you contact support.
Abuse and acceptable use
Nexudo Mail is for legitimate business correspondence. Spam, phishing, malware distribution, and other abusive use are prohibited. See the Acceptable Use Policy and Privacy Policy for how we handle platform use and personal data.
Policies & next steps
Read how we handle data, or start a free trial on your domain.