Last updated: August 10, 2026

Sendria ("the app") is an iOS tool for checking the email DNS configuration of a domain (MX, SPF, DKIM, DMARC, DNSSEC, MTA-STS, TLS-RPT, BIMI, reverse DNS and public blocklists).

Summary

Sendria has no accounts, no sign-in, no ads, no analytics and no tracking. We do not collect, store or receive any personal data on our servers, because the app has no servers of its own.

Data stored on your device

Everything the app saves stays on your device:

• Check history: domain name, health score, check date, MX/SPF/DKIM/DMARC statuses, MX count, and the raw SPF and DMARC records, plus the DKIM selector you entered.
• Preferences: whether you have completed onboarding.

This data is stored locally using Apple's SwiftData and standard iOS preferences. It is not transmitted to us. Deleting the app removes all of it. Individual history entries can be deleted inside the app.

Data sent to third parties

To perform a check, the app must query public DNS and web infrastructure. The domain you type, and hostnames and mail server IP addresses derived from it, are sent to:

• Google Public DNS (dns.google) and Cloudflare DNS (cloudflare-dns.com) over DNS-over-HTTPS, to resolve DNS records.
• Public DNS blocklists (Spamhaus ZEN, Barracuda, SpamCop, SORBS, PSBL), queried through the same DNS-over-HTTPS resolvers, to check whether mail server IP addresses are listed.
• The domain you are checking, over HTTPS, to fetch its mta-sts.txt policy file from mta-sts.<domain>.

These requests contain the queried domain or IP address and your network's IP address, as with any normal internet request. Their handling is governed by those providers' own privacy policies, not by ours. Sendria sends no identifiers, no device information and no personal data along with these requests.

Sharing reports

When you export or share a report, the content is handed to the iOS share sheet and goes only to the destination you choose. Sendria does not upload it anywhere.

Children

Sendria is a technical utility and is not directed at children. It does not knowingly collect data from anyone.

Changes