Contact

Last updated 1 August 2026

Pick the address that matches what you need and we will route it properly.

Support

support@mastrosdr.com

Product questions, billing, anything that is not working.

Security

security@mastrosdr.com

Vulnerability reports. See the security page before you test.

Privacy

privacy@mastrosdr.com

Data access, export or deletion requests.

Abuse

abuse@mastrosdr.com

Report unwanted email sent through MastroSDR. Include full headers if you can.

Received an email you did not want?

Use the unsubscribe link at the bottom of it. That takes effect immediately and permanently for that sender. If they keep contacting you afterwards, tell us at the abuse address above and we will investigate.

Postal address

26 Colonial Drive, New City, NY 10956