Creating a Gmail “send as” address

Want to send emails from another address using Gmail’s interface, but having trouble linking addresses? Auth-Email has you covered!

This guide walks you through setting up a “send as” address in Gmail, so Gmail uses Auth-Email as the SMTP server — perfect for sending as you@yourcompany.com, you@outlook.com, or any authorized Auth-Email address.

✅   Before you begin

You'll need the following:

• A Gmail or Google Workspace account
• An Auth-Email account, and an active subscription to the Personal or Pro plan: sign up here
• An account set up in Auth-Email (see our getting started guide if needed)
• SMTP credentials from the Auth-Email dashboard for the sender account

📤   Step 1: Add the “send as” address in Gmail

1. In Gmail, go to ⚙️ Settings > See all settings
2. Click the Accounts and Import tab
3. Under Send mail as, click Add another email address
4. In the popup window:
   • Name: What you want recipients to see (e.g., “Support Team”)
   • Email address: The email you want to send from (e.g., you@yourdomain.com)
   • Uncheck “Treat as an alias” (this prevents recipients seeing the Gmail account address)
5. Click Next Step

🛠   Step 2: Configure SMTP settings in Gmail

Visit your Auth-Email dashboard and locate the SMTP settings for your account. Enable the toggle for legacy SSL/TLS if it is not already enabled.

Then, in the Gmail popup window, enter the account's SMTP settings. The following table shows the configuration for an account provided by Outlook:

You can always find the correct settings for your specific email account and provider in the Auth-Email dashboard. Here's what the configuration page looks like in Gmail:

Once you've entered and checked all the settings, click Add Account.

🔒   Gmail will use the Auth-Email SMTP server to send mail from your external address.

📥   Step 3: Complete Gmail verification

• Gmail will now send a confirmation email to your new “send as” address
• Open your inbox (either directly or using IMAP/POP via Auth-Email)
• Click the confirmation link or enter the code in Gmail's popup window

Once verified, Gmail will let you choose the external address in the “From:” field when composing new messages.

🧪   Test the setup

1. Compose a new email in Gmail
2. Use the dropdown next to the “From:” field to select your new address
3. Send a test email
4. Verify the email arrives in the inbox of the address you sent it to, and that it appears as sent from the “send as” address

Related articles

• Connecting using a legacy email client or device
• Setting up multifunction printers and scan to email
• Using account add-ins to modify mail server behavior

🙋   Need help?

If you run into any issues, please reach out to us at support@auth-email.com — we'll help you get things working.