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(Visual Basic 6.0) OAuth2 for a GMail using a P12 Service Account KeySee more GMail REST API ExamplesDemonstrates how to use GMail with OAuth2 for aservice account within a Google Workspace Account where your email domain is custom (e.g., @yourcompany.com ).
Note: This example does not work for For more information, see https://www.chilkatsoft.com/google_workspace_setup_smtp_gmail.asp
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim http As New ChilkatHttp ' -------------------------------------------------------------------------------- ' For a step-by-step guide for setting up your Google Workspace service account, ' see Setup Google Workspace Account for Sending SMTP GMail from a Service Account ' -------------------------------------------------------------------------------- ' Begin by loading your Google service account key (.p12) Dim cert As New ChilkatCert Dim success As Long success = cert.LoadPfxFile("c:/someDirectory/keys/chilkat25-cbd7b42afbd8.p12","notasecret") If (success <> 1) Then Debug.Print cert.LastErrorText Exit Sub End If ' The ISS is your service account email address ending in gserviceaccount.com. Dim iss As String iss = "chilkatsvc@chilkat25.iam.gserviceaccount.com" ' The scope is always the following string: Dim scope As String scope = "https://mail.google.com/" ' The sub is your company email address Dim oauth_sub As String oauth_sub = "bob@yourcompany.com" ' The access token is valid for this number of seconds. Dim numSec As Long numSec = 3600 Dim accessToken As String accessToken = http.G_SvcOauthAccessToken(iss,scope,oauth_sub,numSec,cert) If (http.LastMethodSuccess <> 1) Then Debug.Print http.LastErrorText Exit Sub Else Debug.Print "access token: " & accessToken End If ' The access token allows us to send unlimited emails while it's valid. Once it expires, we must obtain and use a new one. ' ----------------------------------------------------------------------- Dim mailman As New ChilkatMailMan ' Set the properties for the GMail SMTP server: mailman.SmtpHost = "smtp.gmail.com" mailman.SmtpPort = 587 mailman.StartTLS = 1 mailman.SmtpUsername = "bob@yourcompany.com" mailman.OAuth2AccessToken = accessToken ' Create a new email object Dim email As New ChilkatEmail email.Subject = "This is a test" email.Body = "This is a test" email.From = "Bob <bob@yourcompany.com>" success = email.AddTo("Recipient","recipient@example.com") ' To add more recipients, call AddTo, AddCC, or AddBcc once per recipient. success = mailman.SendEmail(email) If (success <> 1) Then Debug.Print mailman.LastErrorText Exit Sub End If success = mailman.CloseSmtpConnection() If (success <> 1) Then Debug.Print "Connection to SMTP server not closed cleanly." End If Debug.Print "Successfully sent email using Gmail with a service account key." |
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