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Contact

One address reaches us for everything: contact@lumistrel.com. A person reads every message.

Last updated 26 October 2026

On this page

  1. Write to us
  2. When to expect an answer
  3. Grievance officer
  4. Reporting a security problem
  5. Where we are

Write to us

Email contact@lumistrel.com for sales and plans, help with the product, your data and privacy, complaints, and security reports. Starting the subject with one of these words helps us reach you sooner: Sales, Support, Privacy, Complaint, Security.

If your question is about your account or your data, write from the email address you sign in with, so we know the account is yours. Never send us your password or an AI provider key.

When to expect an answer

AboutFirst replyResolved
Sales, plans and pricingWithin 2 business daysNot applicable
Help with the productWithin 2 business daysAs soon as we can; we tell you what to expect
Your data and privacyWithin 24 hoursWithin 15 days
ComplaintsWithin 24 hours, with a reference numberWithin 15 days
Removing unlawful contentWithin 24 hoursWithin 72 hours
RefundsWithin 24 hoursDecided within 5 business days; see Refunds
Security reportsWithin 72 hoursAssessed within 7 days

Business days are Monday to Friday, except public holidays in Maharashtra, India.

Grievance officer

Praharsh Nagpure, grievance officer for Lumistrel, Mumbai, Maharashtra, India. Email: contact@lumistrel.com.

Write to the grievance officer about any complaint: about the service, about content on it, or about how we handle your personal data. Say what happened, when, and what you want us to do. We acknowledge your complaint within 24 hours and resolve it within 15 days of receiving it. If you are not satisfied, our privacy policy and terms say where you can go next.

Reporting a security problem

Please report it privately to contact@lumistrel.com with Security at the start of the subject, not in public. Say what you found, how to reproduce it, which version or page is affected and what impact you see. We acknowledge within 72 hours and assess within 7 days, and fix confirmed problems, or explain how to avoid them, before they are made public. Please allow us 90 days before you disclose anything. Never test in a way that could harm the live service or reach other people's data.

Where we are

Lumistrel is run by Praharsh Nagpure, an individual, from Mumbai, Maharashtra, India. No company is registered. We work by email and do not take phone calls or visits. A full postal address will be published on this page before paid plans go on sale.

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© 2026 Praharsh Nagpure. Lumistrel v0.74.2. Not affiliated with or endorsed by the International Society of Automation.