[Unvalidated Sign-Up] Include a magic link in every unread message summary footer and use it for any CTAs in the email as well

[anmurali]

Problem:
Email notifications from New Dot have links to go to new.expensify.com to respond, or approve, or pay etc.
Clicking on this simply brings you to new.expensify.com like any other site visitor and you have to sign in from scratch.
This feels like a sub optimal experience since we already know the user (we emailed them), and we know where they need to go (we included the CTA in the email), and yet we force them to sign in from scratch and navigate to where they need to go on their own

Solution:

1. IF the account is unvalidated (ie, nobody has ever signed in)

• THEN make every link we send via UnreadMessageSummary into a magic link (because there's nothing in the account yet to steal)

2. However, after you click it the first time, you have an infinite session, so in theory you shouldn't need a magic link when clicking the link the next time. This would mean:

• The first link you click drops you straight into the product
• The second link requires authentication with a magic link, if you don't already have an infinite session (eg, if you are on a new device)

3. Use that same logic for any link that would be used for any "calls to action" in the body of the email, which will soon be refactored to look exactly like the product UI.

[melvin-bot]

Triggered auto assignment to @tylerkaraszewski (Engineering), see https://stackoverflow.com/c/expensify/questions/4319 for more details.

[tylerkaraszewski]

Sorry Melvin, my plate is full.

[MitchExpensify]

Looking for help here https://expensify.slack.com/archives/CC7NECV4L/p1704845562604679?thread_ts=1704818282.056719&cid=CC7NECV4L

[techievivek]

I can work on this one. Thanks. 🙌

[melvin-bot]

@techievivek Whoops! This issue is 2 days overdue. Let's get this updated quick!

[techievivek]

Not overdue, working on it. Latest discussion is here: https://expensify.slack.com/archives/C05NJ4SLBMF/p1705328587735239?thread_ts=1704221792.809129&cid=C05NJ4SLBMF

[melvin-bot]

@techievivek Whoops! This issue is 2 days overdue. Let's get this updated quick!

[MitchExpensify]

Asking for an update here https://expensify.slack.com/archives/C05NJ4SLBMF/p1705701594874099

[melvin-bot]

@techievivek 12 days overdue. Walking. Toward. The. Light...

[techievivek]

Sorry, I couldn't prioritize this today. I will work on it tomorrow :for-sure:, I also replied to the thread here: https://expensify.slack.com/archives/C05NJ4SLBMF/p1706595259842319

[techievivek]

Update for today: https://expensify.slack.com/archives/C05NJ4SLBMF/p1706667468085419

[techievivek]

Added an updated here: https://expensify.slack.com/archives/C05NJ4SLBMF/p1707141774434789?thread_ts=1706915414.620219&cid=C05NJ4SLBMF

[techievivek]

As discussed here https://expensify.slack.com/archives/C036QM0SLJK/p1716211040969329?thread_ts=1715336674.469839&cid=C036QM0SLJK, I will review this and the main GH #30794 along with the linked PR by tomorrow.

[quinthar]

Excited for this! Let's chat in realtime here: https://expensify.slack.com/archives/C066HJM2CAZ/p1716892649705859

[techievivek]

Still discussing potential solution on above thread.

[techievivek]

Web-E PR here: https://github.com/Expensify/Web-Expensify/pull/42241

[techievivek]

Both Auth and Web-E PRs are ready for review here.
Web-E: https://github.com/Expensify/Web-Expensify/pull/42241
Auth: https://github.com/Expensify/Auth/pull/11119

[techievivek]

Auth PR is deployed to PROD. Web-E we will get it merge it today.

[melvin-bot]

@techievivek Whoops! This issue is 2 days overdue. Let's get this updated quick!

[melvin-bot]

@techievivek Eep! 4 days overdue now. Issues have feelings too...

[techievivek]

This is done and released under Xerocon milestone.