Thanks @Pierre-Quem for clarifying your scenario.
You can send an email directly from Power Apps. To do so you will need.
1. Add a mail connector. In this case I used Mail, but you can use others like Office 365 Outlook or Gmail for example.

2. On the OnChange event for the Object Detector you inserted, write the following formula. This formula will be executed each time a new image is analyzed, and if a brand is detected, an email will be sent with the names of the detected brands.

If(
CountRows(
Filter(
ObjectDetector1.VisionObjects,
count > 0
)
) > 0,
Mail.SendEmailV3(
"WRITE THE EMAIL ADDRESS HERE",
"EMAIL SUBJECT: Brand detected",
"EMAIL CONTENT: Brands detected: " & Concat(
Filter(
ObjectDetector1.VisionObjects,
count > 0
),
displayName & ", "
),
false
)
)
I hope this helps!