Facing problem while testing a journey with a reaction event .

[DibyasaiJe]

I am trying to test a journey, which starts from an audience, then goes through an email(initial email) , then through a reaction event (email opened) and if that initial email is opened then getting a Thank you email and if not opened then it goes through another path having timeout of 30 mins and then getting a reminder email. But, sometimes when I am opening the first email , I am getting the reminder email instead of getting the Thank you Email. I am attaching the screenshot  of my journey.

[gengaipandi03]

Important considerations:

1. HTML emails only: This method only works for HTML emails, not plain text ones.
2. Blocked images: If the recipient has image loading disabled in their email client, the pixel will not load, and the open will not be tracked.
3. Inaccurate data: Features like Apple's Mail Privacy Protection can pre-load images, which may cause the tracking pixel to fire and inflate open rate numbers before the recipient has actually opened the message. 

So, we need to consider any of the above considerations will block tracking the open rate properly, instead, you can use the email link click option if you need accurate numbers. But, the ratio of link click will be lesser than the email open. 

There is one more option to use it in audience level, if you want that solution let me know.