Setting Up Sendinblue Mailer in Fluent SMTP

You can use Sendinblue to improve your WordPress site email deliverability? Sendinblue is one of the leading mailer options for WordPress, SendinBlue is reliable and easy to set up. In this article, you will learn how to use Sendinblue mailer with Fluent SMTP.

Configuring Fluent SMTP for SendInBlue #

Hover over settings and go to Fluent SMTP Dashboard. If this is the first time you are using Fluent SMTP you will see the list of available Mailer, go ahead and select SendInBlue.

Configuring Fluent SMTP for SendInBlue

After selecting SendInBlue as the mailer, a very simple settings window will open as shown on the screenshot below.

Sendinblue Fluent SMTP

As I said, This is as simple as setting up the “From Email”, “From Name” and API Key and clicking the save button.

From Email: The “From Email” should be the email you verified with SendInBlue. Check the box to set the return path to match the from. The Return Path indicates where non-delivery receipts – or bounce messages – are to be sent. If unchecked, bounce messages may be lost. With this enabled,
you’ll be emailed using “From Email” if any messages bounce as a result of issues with the recipient’s email.

From Name: From name can be anything you want. The best practice is to use the combination of your name and company name. For example, I would choose something like “Jewel From WPManageNinja” where Jewel is the first name of the CEO and WPManageNinja is the company. The API key will be provided by SendInBlue.

How to get SendInBlue API Key: #

Log into your SendInBlue account first and then click on the account icon located at the top right corner. A dropdown panel will appear and you need to click on the SMTP & API.

How to get SendInBlue API Key

Now create a new V3 API key or use an already existing API Key.

Sendinblue API Key Fluent SMTP

Go back to your Fluent SMTP’s SendInBlue configuration panel and enter the API key and your SendInBlue Driver is ready to impact for transactional emails.

Send a Test Email #

Go to the Email Test Tab and type a from email. This should be the same “From Email” of your SendInBlue setup. This is optional and you can leave it blank also. in that case, the default SMTP Driver will be used. If you get a success message as shown below then your SMTP setup is up & running.

send test email from Fluent SMTP

Frequently Asked Questions #

How to fix “[permission_denied]:Unable to send email, Your SMTP account is not yet activated”? #

This error states that your SendInBlue account is not activated yet. To fix the issue, get in touch with the SendInBlue team. After signing up with SendInBlue you also need to activate the SendInBlue account.

Powered by BetterDocs


  1. Hello, I’m struggling to use SendinBlue and FluentSMTP. I set up everything in SendinBlue and added the TXT dns records and authenticated them for our site, (was this necessary?)

    And when I send a test email from FluentSMTP, it sends fine, but nothing shows up in the fluentSMTP email logs. At all, ever.

    And I do see this warning at the top of my wp site management

    The FluentSMTP plugin depends on wp_mail pluggable function and plugin is not able to extend it. Please check if another plugin is using this and disable it for FluentSMTP to work!

    Possible Conflict: /home4/solarset/public_html/wp-includes/pluggable.php:171

Leave a Reply

Your email address will not be published. Required fields are marked *