Dear @Norbert_123,

Norbert_123 wrote

Recently I had to go thru factory reset of all my OMADA devices due to problems with TL-R605 firmware upgrade. 

Once finished and configured (after many hours... btw) I've noticed that emails are being sent even if there is no SMTP configuration... 

OC200 is using OLD config AFTER factory RESET!

May I check how you reset the OC200? Basically, there are two ways to reset the OC200:

• Press the reset hole on the OC200 to hard reset it.

In this way, you may navigate to Settings -> Controller -> General Settings to confirm if the option of "Reset Button" is enabled.

It's enabled by default. If it's disabled by accident, the OC200 Controller cannot be reset via the reset button physically.

• Click Factory Reset from the controller page.

On the controller page of OC200, navigate to Maintenance -> Hardware Controller, click "Factory Reset".

After you factory reset the OC200, you will need to reconfigure it from the beginning.

Dear @Norbert_123 

Norbert_123 wrote

After that I've noticed that emails still are being send even if SMTP option is not checked and email is not filled...

The issue you are experiencing sounds unusual/abnormal.

To address the issue and try to fix it, I'd like to escalate your case to the TP-Link support team for further investigation.

They will reach you via your registered email address shortly, please pay attention to your email box later.

Once the issue is addressed or resolved, I'd encourage you to share it with the community.

Thank you so much for your cooperation and support!