Find api message ID from GMail web interface

user_129699 0
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When looking at a GMail message, the URL used to simply contain the message ID that I could then easily query with the GMail API.

E.g. when looking at an email, the URL was something like 

https://mail.google.com/mail/u/1/#inbox/167d7bc198aa3059

This was convenient for development and debugging problems with specific emails. I could just make a call to get_user_message with 167d7bc198aa3059

But now, the same URL is expressed like this:

https://mail.google.com/mail/u/1/#inbox/WhctKJVJZkbrQVvLJqnhlZMQRckHrPbrhZMXXWzVswzckGCcRjQSZzjsPwcfhsDNXsFTDTG

How can I find back the message Id to query on my API from the new GMail URL format?

Or is there a simple encoding/decoding that transforms

WhctKJVJZkbrQVvLJqnhlZMQRckHrPbrhZMXXWzVswzckGCcRjQSZzjsPwcfhsDNXsFTDTG

into

167d7bc198aa3059

?

gmail-api gmail
2 Answers

You can use the following code in the console to obtain the message ID:

document.querySelector('[data-message-id]').getAttribute('data-legacy-message-id')

Or just inspect the DOM:

Inspect DOM

user_33837510

In the new Gmail

thread-id
document.querySelector('[data-legacy-thread-id]').getAttribute('data-legacy-thread-id')
message-id (when you enter an email)
document.querySelector('[data-message-id]').getAttribute('data-legacy-message-id')

You can get all emails list with google API

curl \
  'https://www.googleapis.com/gmail/v1/users/userId/messages/id' \
  --header 'Authorization: Bearer [YOUR_ACCESS_TOKEN]' \
  --header 'Accept: application/json' \
  --compressed
user_9890670
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