Configure Your Email Client with turboSMTP SMTP Settings

Use turboSMTP as the outgoing SMTP server in your mail client, CMS, or application. Choose the global or EU host, create a key with SMTP Sending enabled, and configure a port with its matching encryption mode.

SMTP server settings

Use the following settings when configuring any client or application to send through turboSMTP:

Setting	Value
SMTP Host	`pro.turbo-smtp.com`
SMTP Host (EU)	`pro.eu.turbo-smtp.com`: EU sending route
Port (recommended)	`587`: TLS / STARTTLS
Ports (implicit TLS)	`465`, `25025`
Other STARTTLS ports	`2525`, `25`
Authentication	Required: PLAIN or LOGIN
Username	Your Consumer Key (from Settings → Integrations → API Keys)
Password	Your Consumer Secret (from Settings → Integrations → API Keys)

Use your Consumer Key as the SMTP username and your Consumer Secret as the SMTP password, not your account email and login password. The Consumer Secret is generated in your dashboard under Settings → Integrations → API Keys. If you haven’t created an API key yet, see Create and Manage API Keys.

If your ISP blocks port 25 (the default SMTP port), use port 587 or 2525 instead. Port 587 with STARTTLS is the recommended choice for most environments.

Set up in popular email clients

Microsoft Outlook
Mozilla Thunderbird
Gmail / Google Workspace
WordPress

These steps apply to Outlook for Microsoft 365, Outlook 2019, 2021, and Outlook Classic. The menu labels may vary slightly between versions.

Open account settings

In Outlook, go to File → Account Settings → Account Settings. Select your email account and click Change.

Open More Settings

Click More Settings (bottom-right of the change account dialog), then select the Outgoing Server tab.

Enable SMTP authentication

Check My outgoing server (SMTP) requires authentication, select Log on using, and enter your Consumer Key and Consumer Secret. Keep these separate from your incoming-mail credentials.

Set the outgoing server

In your account’s server settings, set the outgoing server to pro.turbo-smtp.com (or pro.eu.turbo-smtp.com for EU sending). Under More Settings → Advanced, set the outgoing port to 587 with STARTTLS, or 465 with SSL/TLS.

Save and test

Click OK, then Next, and use the built-in Test Account Settings button to verify that Outlook can authenticate and send a test message through turboSMTP.

Open account settings

In Thunderbird, go to Tools → Account Settings (Windows/Linux) or Thunderbird → Account Settings (macOS).

Configure outgoing server

In the left panel, click Outgoing Server (SMTP), then click Add to create a new server entry.

Enter SMTP details

Fill in the following values:

Description: turboSMTP (or any label you prefer)
Server Name: pro.turbo-smtp.com
Port: 587
Connection Security: STARTTLS
Authentication Method: Normal password
User Name: your turboSMTP Consumer Key

Save and assign

Click OK to save. Back in Account Settings, select your email account, scroll to Outgoing Server (SMTP), and choose the turboSMTP server you just created from the dropdown.

Send a test email

Compose a new message and send it. Thunderbird will prompt you for your SMTP password on first use: enter your Consumer Secret.

Gmail’s Send mail as feature can send through an external authenticated SMTP server. Availability depends on your account and Workspace policy.For organization-wide Google Workspace routing, use Google’s outbound-gateway configuration and confirm its authentication requirements with your administrator. The Admin console’s SMTP relay service configures Google’s relay, not turboSMTP.For personal Gmail (Send mail as):Go to Gmail Settings → Accounts and Import → Send mail as → Add another email address. Enter your sender address, then on the SMTP configuration screen use pro.turbo-smtp.com, port 587, your Consumer Key as the username, and your Consumer Secret as the password.

WordPress does not support authenticated SMTP out of the box, so you’ll need an SMTP plugin such as WP Mail SMTP, Post SMTP, or FluentSMTP.Install your preferred SMTP plugin, then enter the turboSMTP settings:

SMTP Host: pro.turbo-smtp.com
SMTP Port: 587
Encryption: TLS
Username: your Consumer Key
Password: your Consumer Secret

For full integration instructions for WordPress and other platforms, see the Integrations section of the documentation.

Set up in your application

For applications that send email programmatically, configure your SMTP library using the same credentials. Here’s an example configuration block you can adapt to your language or framework:

Configuration example

smtp:
  host: pro.turbo-smtp.com
  port: 587
  encryption: starttls
  auth: true
  username: "YOUR_CONSUMER_KEY"        # your Consumer Key from API Keys
  password: "YOUR_CONSUMER_SECRET"     # your Consumer Secret from API Keys

Use the HTTP send API if your application works more easily with HTTPS and JSON. SMTP also supports MIME attachments and custom headers.

Verify your connection

After configuring your SMTP settings, send a test message to confirm everything is working:

Go to dashboard.serversmtp.com and log in.

Check the email log

Navigate to Analytics. Any email you’ve sent through turboSMTP will appear here with its delivery status (delivered, bounced, deferred, etc.).

Confirm delivery

If you see your test message listed with a Delivered status, the recipient’s mail server accepted it. This does not guarantee inbox placement. If the message shows as bounced or deferred, check that your Consumer Key and Consumer Secret are entered correctly and that the port you selected is not blocked by your network or firewall.

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Configure Your Email Client with turboSMTP SMTP Settings

SMTP server settings

Set up in popular email clients

Set up in your application

Verify your connection

​SMTP server settings

​Set up in popular email clients

​Set up in your application

​Verify your connection

SMTP server settings

Set up in popular email clients

Set up in your application

Verify your connection