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Just curious if the email headers are marked by Gmail to denote if the email was scheduled vs sent right away.
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if there is a scheduled email delivery from the outlook client, the time stamp on the email will be the time of the email submitted/accepted for delivery by the Exchange server. If a digital signature was used, the time stamp in the properties of the digital signature will give away the actual time sent.
The feature will be on by default, although the company says you may see the Scheduled folder before you get the functional use of the feature. The Schedule Send option is launching immediately, but most end users (that's you and me) might not see it until April 15, 2019 or after.
Normally, recipients won't know whether this email is delay delivered. I checked this on my side. Recipient should only see 'received time' in their inbox. I also checked message header and the 'Creation time' is the date when Outlook sent out the email.
How To Check If Someone Has Read Your Email on Gmail. 1 Open your Gmail account. 2 Click on Compose. 3 Write your email like you normally would. 4 Select More Options at the bottom right. 5 Tick the Request Read Receipt option. 6 Send your email.
Method 1. A Read Receipt Step 1. As you might expect, you need to be in your Gmail account to start. Step 2. Then, open the Compose window – just as you would if you were sending a standard email. Step 3. Pop in your recipient, subject line, and the email that you want to send. Step 4. Don’t click Send yet. Step 5.
I think when a delayed email was sent by the sender, it is sitting on the sender's outbox until the deferred send time. So the receiver can only see the submitted time same as the deferred time as this is the time it reaches the server.
Know when a recipient reads your email. If you’re sending an important email to someone, find out when they’ve opened it by setting up a read receipt. A read request is sent to every recipient in the To and Cc fields, but not to recipients in the Bcc field, mailing lists, or aliases. Note: Read receipts work on most email systems, ...
When I tested this myself, I couldn't find any additional headers or any additional parameters in the headers. When you schedule an email, though, Gmail sets the Date header to the scheduled time. Since you can schedule emails only with the precision of minutes but not seconds, you know for sure that the email wasn't scheduled if the time when the email was sent includes seconds. In my experiment:
Date: Sat, 13 Feb 2021 10:17:41 +0100 <- non-scheduled
Date: Sat, 13 Feb 2021 10:20:00 +0100 <- scheduled
To calculate the probability that the email was scheduled when the seconds are zero, we lack the base rate of how many emails are scheduled. It's a classic application of Bayes' theorem:
P(scheduled | zero) = P(zero | scheduled) * P(scheduled) / (P(zero | scheduled) * P(scheduled) + P(zero | non-scheduled) * P(non-scheduled))
where:
If you set X to to your best estimate of how many emails are scheduled, for example 1 / 1000, you get the probability that an email was indeed scheduled if the seconds are zero as P = X / (X + 1/60 * (1 - X)). With X = 1 / 1000, P = 5.6%. Let me know if I made any mistakes.
PS: The headers include which Gmail server sent the message. It might be that Google uses different servers for scheduled and non-scheduled messages. One would have to send way more emails, though, to figure this out.
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