Email is a real tool, but WOW do people ever write confusing nonsense in it. I refer to the technique if this simple, but oh so very confusing technique:

I’ll call you / see you / contact you / whatever you / tomorrow.

I mean, how nice is that? Trouble is you ‘ve no way to know when the email will be read. So are you referring to tomorrow, or the day after, or what? To untangle this the reader need to look at the date the email was sent. And guess what, not everyone knows how to do that. SO, DON’T DO THAT.

Make your writing crystal clear. (As the writer of the email it is incumbent on you to do that.) Like this: I’ll contact you on Monday, June 6, 2022 at 9am. Now whenever the email is read, the reader will know when to expect your communication. And, it the email is read after that date and time, the reader knows that the communication was missed and need to do something about that.

Oh, and one other thing: when you return an email do please rewrite the subject line. The reader will appreciate that.