There[SQ]s no officially supported "Secure Mail for Gmail by Streak" application for Windows (or any other operating system). Streak is a popular CRM and email productivity tool that *integrates* with Gmail, but it doesn[SQ]t offer a standalone "Secure Mail" product.

If you encountered something claiming to be "Secure Mail for Gmail by Streak" for Windows, it[SQ]s highly likely to be :

*

A scam or malware:

Be extremely cautious. Don[SQ]t download or install it.
*

A misunderstanding:

Perhaps you saw a mention of Streak[SQ]s security features within Gmail itself and misinterpreted it as a separate downloadable application. Streak enhances Gmail[SQ]s functionality, but doesn[SQ]t replace it with a separate email client.
*

A third-party app falsely advertising itself:

Some apps might try to capitalize on Streak[SQ]s reputation.

In short:

There is no legitimate "Secure Mail for Gmail by Streak" app for Windows. If you[SQ]re looking for enhanced security and features within Gmail, consider using Streak directly as a Gmail add-on or exploring other reputable Gmail security add-ons, but always download from official sources.