gmail-api | main class | Email library

These days I am finding myself in the position of having to implement for one of my college courses a system that should act as a giant wrapper over many communications apps like Gmail , Facebook Messenger maybe even WhatsApp .To put it simply you should have a giant web interface where you can authorize Gmail , Messenger and use them at once when required. I am thinking of going with an REST API to manage the user's services authorized by OAuth2.Also I am thinking of using Node.JS and Express.js in the backend and React.js in the frontend. I found some sweet libraries in npm that should take care of interacting with the involved APIs(https://www.npmjs.com/package/node-gmail-api this one for instance), but I am also doubtful about this approach , for example I have no idea how to keep the use notified about its incoming mails or messages for example . I am in dire need of some expertise since I forgot to mention but I am quite the newbie in this field. To sum it up for once my question is how would you implement such an infrastructure ? Is it my approach viable or I am bound to hit some really hard to overcome obstacles?

I am writing a script which get the messages from an email inbox, checks the messages' subject, conditionally prints a .pdf attachment and then marks the message as read.

I can read the messages, print the .pdf file conditaionall but can't mark the message as read.

I am trying to use the following function in order to mark as read:

I want to integrate Gmail in Spring boot project. My requirement is,

1. get user gmail access using google auth
2. send email
3. save all new incoming email of all integrated account
4. filter email with the specific email/domain
5. Display all emails

I followed this doc Java Quickstart

Using this I am able to access user gmail account and send email, but couldn't find anything about how to recieve incoimng mail, filter and process data using gmail-api or any other library.

Can any one please help me about how to listen for user new incoming email and filter them?

Thanks in advance:)

Using the Gmail Service to send an email, but I'm having problem with the email format which needs to be passed to Google::Apis::GmailV1::Message, I'm passing raw parameter to it in the following format

I'm trying to use the Gmail-API to get all the threads from a user and to have all of the messages in that thread by using threads.list. In the gmail documentation, it states that the following is the response from hitting this endpoint:

Very straightforward question, but info on this is conflicting.

We're being asked to create a service account that has domain-wide authority to access Gmail API.

I would like to clarify if that app will now have access to all user data or it will need to seek permission from each individual user?

On one hand I setup a consent screen, on the other I see the following notice when delegating domain wide authority in G suite

Developers can register their web applications and other API clients with Google to enable access to data in Google services like Gmail. You can authorize these registered clients to access your user data without your users having to individually give consent or their passwords.

And here it also seems like the app will have access to all users' data without having to seek it from each user individually: https://support.google.com/a/answer/162106?hl=en

Sorry if it's a dumb question I looked at the SO solutions and read through the documentation, but it's still unclear, closest I found is this: Gmail API - Delegating domain-wide authority to the service account to single user but it doesn't answer the question.

This is what I got from G Suite support, basically saying the app will have access to all the user data without asking for any login/pass:

I'm looking to basically setup my application such that it receives notifications every time a mail hits a Gmail inbox.

I'm following the guide here.

• I have a Topic and subscription created.
• My credentials are working. I can retrieve my emails using the credentials and a Go script as shown here.
• I have enabled permissions on my topic gmail with gmail-api-push@system.gserviceaccount.com as a Pub/Sub Publisher.
• I have tested the topic in pub/sub by manually sending a message through the console. The message shows up in the simple subscription I made.

main.go

I read this article at medium https://medium.com/lyfepedia/sending-emails-with-gmail-api-and-python-49474e32c81f about sending emails with the google api, but i wonder if i need a g suite account for that?

I want to update signature of a domain user via Gmail .Net Client Library as G Suite administrator.

I followed this example to setup and give permissions in google developer console.

Here is the summary what I did:

1. Enabled Gmail API in Google API Console
2. Created a Service Account for my project
3. Delegated domain-wide authority to the Service Account
4. Added https://www.googleapis.com/auth/gmail.settings.sharing, https://www.googleapis.com/auth/gmail.settings.basic scopes

I'm able to update my own email signature but when I try to update signature of any other user on my domain I get following error: