Email Explained from First Principles

Re:Email Explained from First Principles by PaulDavisThe1st on Saturday May 08, 2021 @03:25PM (#27089966)

But can it explain how a financial institution can reliably send me a 2FA passcode in a few seconds via email, but a message from wife in the other room can take a couple of hours to arrive?

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Re:Email Explained from First Principles by jbrot on Saturday May 08, 2021 @03:36PM (#27090024)

Presumably because the financial institution sends the email directly to your email provider via SMTP while your wife sends the email to her email provider via a mail client protocol like POP3 or IMAP, and then her email provider forwards the email on to your email provider via SMTP at its leisure

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Re:Email Explained from First Principles by gumby on Saturday May 08, 2021 @04:05PM (#27090237)

Does anyone actually implement the BURL extension to IMAP? I think pretty much all mail clients just use SMTP for submission.

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Re:Email Explained from First Principles by PaulDavisThe1st on Saturday May 08, 2021 @05:06PM (#27090687)

Not a bad guess, except that gmail is the email provider for both my wife and myself.

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Re:Email Explained from First Principles by upofadown on Saturday May 08, 2021 @05:23PM (#27090828)

Then the answer might be that the bank does not use Gmail. It is after all known to be not that great.

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Re:Email Explained from First Principles by that_guy_iain on Saturday May 08, 2021 @05:51PM (#27091077)

Gmail doesn’t send instantly. This is why they could add the undo feature for sending emails.

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Re:Email Explained from First Principles by PeterisP on Saturday May 08, 2021 @07:06PM (#27091622)

That explains a ten second delay, not a couple of hours as parent poster claims.

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