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WLF2022916
Newbie
Joined: 05 November 2023
Location: United Kingdom
Online Status: Offline
Posts: 10
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| Posted: 05 November 2023 at 11:56am | IP Logged
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Hello
In most email clients, if we make a new email and save it as eml file without sending, once opened again is available for editing.
But received or sent emails once opened are read-only and can't be edited.
When making a new email message with your mail .net and saving as eml file on disk, which property will control this or how can I set it as editable or read-only?
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WLF2022916
Newbie
Joined: 05 November 2023
Location: United Kingdom
Online Status: Offline
Posts: 10
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| Posted: 05 November 2023 at 12:59pm | IP Logged
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Hello
This works, am I using it correctly?
MailMessage.Headers.Add("X-Unsent", "1", True)
To remove it (whether it exists or not) is this correct?
MailMessage.Headers.Remove("X-Unsent")
If X-Unsent is not present, is MailMessage.Headers.Remove("X-Unsent") ignored safely or it may throw exception?
Last concern if you don't mind please?
Before saving MailMessage, how to add a line to the very beginning of email (the first line)
I want to add this line to the begin of source MailMessage:
User-Agent: Microsoft-MacOutlook/16.68
Because it is not started with X- , the below code seems to work but it will not be added to the beginning of MailMessage:
MailMessage.Headers.Add("User-Agent", "Microsoft-MacOutlook/16.68", True)
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Alex
AfterLogic Support
Joined: 19 November 2003
Online Status: Offline
Posts: 2206
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| Posted: 06 November 2023 at 1:56am | IP Logged
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Hi,
EML format does not have read-only status. Mail clients implement this with their own proprietary means.
> MailMessage.Headers.Add("X-Unsent", "1", True)
It's correct in terms of adding a header. But again, there is no standard mechanism for that. SO it may work with your particular mail client and not with others.
> If X-Unsent is not present, is MailMessage.Headers.Remove("X-Unsent") ignored safely or it may throw exception?
It's correct and safe. Remove will return False if the header was not found. No exception will be thrown.
> Before saving MailMessage, how to add a line to the very beginning of email (the first line)
MailMessage.Headers.Add("User-Agent", "Microsoft-MacOutlook/16.68", True, 0)
Regards,
Alex
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