Decription

Sending emails through Sendgrid or GMail API

Build

go build -o <output_file> .\main.go

General setup before sending email

1. Update configs/message.json.

{
  "from": "Mail send from",
  "email": "xxx@domain.com"
  "subject": "This my first mail",
  "content": "Test mail"
}

2. Update configs/maillist.csv, the file listed email address to be sent.

<Name>,<Email>,<Attachment>
WILL HUANG,a12345@gmail.com,TEST.pdf
WILL WEI,a2345@gmail.com,TEST2.txt

Send EMail with Sendgrid

1. Setup a Sendgrid account and create the API key. link

2. Update configs/config.json

   • Update sendgridApiKey to the created one from first step.

3. Execute and EMail sent

[SUCCESS] sending mail to: WILL HUANG a12345@gmail.com
[SUCCESS] sending mail to: WILL WEI a2345@gmail.com

Send EMail with GMail API

1. Google API Setup:

   • Enable google API, read the page.
   • Create GMail authentication credential:
     Read the page and create a OAuth client id credential.
     Download credential file and save content to configs/gmail/credentials.json.

2. Update configs/config.json

   • Update "gamilCredentials" to configs/gmail/credentials.json.

3. First time execute and autorization:

   • Execute the program and you will see following statement, follow the link to authorize the application.

   Go to the following link in your browser then type the authorization code:
   https://<Authorization URL>
   

   • Copy the token from browser and enter the token as following.

   Please enter the auto code from browser: <COPY FROM Browser>
   

4. EMail sent

[SUCCESS] sending mail to: WILL HUANG a12345@gmail.com
[SUCCESS] sending mail to: WILL WEI a2345@gmail.com