Sending email from a Gmail alias

Hi! I just discovered your plugin, and I have to say it works great. Love the fact that I don’t have to enter a username and password, unlike the other SMTP plugins.

Question: I have a Google Apps for Business account, with my own domain name. Let’s say my mailbox hosted there is john@example.com, and this mailbox also has an alias attached to it, fred@example.com.

I’ve set up the Gmail API using this mailbox (john@example.com) – however, I want Postman SMTP to send its emails using fred@example.com as the FROM address, which I have added to the Message tab of Postman’s settings.

But when I send a test email using this configuration, Google seems to change the FROM address back to john@example.com – and it loses the friendly “Name” I’d given it in the Name field too. The email log shows that your plugin is using fred@example.com in the From field it sends to Google, which means it must be Google that is changing this.

Is there any way, that you know of, to configure the Gmail API – or your plugin – to allow my alias address to be used when it is given in the FROM field? Is this anything that you, or I, have control over?

https://wordpress.org/plugins/postman-smtp/