Missing mail in Faris's route

[R-Tour]

Hi. I've been trying all combinations I could think of. Replying to only the first mail options, only to the second options, to a combination of both, not replying to any mails at all, not replying to only Kuroki's, Okabe's, and Tenmyouji's mails; but nothing seems to work.

No matter what, there's still one mail missing for me. It's between Mayurii's mail from 8/9 on 23:59 (there's also Suzuha's mail from the same time before hers) and Faris's D-mails from the future starting from 00:01 of 8/10 about Nae's location. I assume the missing mail is from 00:00? It seems like it should be either another mail of someone reaching out to Faris after she locked herself in her room or another D-mail from the future.

It's more or less at this point in the story: https://www.youtube.com/watch?v=bnWCwnCQV9Y&t=1348s (the player already has 3 D-mails from Faris at this point)

And here's how it appears on the Mails List: https://imgur.com/a/kfvmmdr

Does anyone know how to unlock it?

[R-Tour]

Figured out the solution thanks to the help of a kind soul from Reddit. If anyone else has problems with getting that mail in the future, here's how you do it:

That missing mail was Suzuha's second mail, which reads: "Can I call you?". It's triggered by actually reading Suzuha's only earlier mail of the chapter. As in, her firt mail is one of those automatic mails that you check out during the story regardless (especially if you skip through read text), so in order to unlock that second mail you have to take out the phone and open that mail again afterwards for it to count.