Placeholder: @cache
This placeholder refers to the possibility to set a cooldown time when creating a mail.
It will be replaced by all information that is created during the cooldown time. If this placeholder is missing,
the information will be written at the end of the mail or attached (From a size of 5 MB).
What is cooldown?
With the QuickHMI e-mail function, mails are sent automatically as described above. In extreme cases, this would mean that if,
for example, a variable changes 20 times per second, 20 mails are also sent per second. To prevent this, a cooldown can be set.
If "10" is entered here as an example, only one mail is sent every 10 seconds.
If further mail-triggering events occur within these 10 seconds, the sending of mails is blocked for this time.
But the information's are not lost. They are temporarily stored and either written at the end of the mail as a
summary or attached as an attachment (From a size of 5 MB).