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Setting up SMTP with 2-Step Verification On

If you are using 2-step Verification in Gmail, in order to configure your SMTP email server you need to use an app password.
An App Password is a 16-digit code that gives an external app or device permission to access your Google Account.

Important note: This article is only relevant to Google users that have 2-Step Verification security option turned on. Read this guide if you haven’t enabled the 2-Step Verification and the SMTP is not working.

We recommend turn 2-step Verification On due to the fact that Google is constantly restricting access to non-Google products.

Follow the following steps to learn how to send the emails through your Gmail SMTP server:

1 Open your Gmail account and head over the gear icon to access its settings.

123Formbuilder SMTP

2. At Forwarding and POP/IMAP look for the option called IMAP access and disable it.

123Formbuilder SMTP server web forms

3. Click on your account’s icon and choose Manage your Google Account 

123Formbuilder SMTP server web forms

4. Open the Security section and select App passwords.

123Formbuilder SMTP server web forms

5. In ‘Select app’ choose ‘Other (custom name)‘, give it a name and press Generate. The name can be 123FormBuilder. This way you know that the password is related to your 123FormBuilder forms.

123Formbuilder SMTP server web forms

6. It will give you a 16-digit code. Copy and save the password.

123Formbuilder SMTP server web forms

Important Note: Once you click on Done, the password will no longer be available. However, you can generate a new password at any given time.

7. Now, that you have the password, head over your 123FormBuilder and open the SMTP configuration window. Read more details about how to enable the SMTP server.

8. Insert your SMTP server details. Where it asks you to enter the Password, paste the app password copied earlier.

Use the following settings:

  • Host:
  • Port: 587
  • Protocol: TLS

123Formbuilder SMTP server web forms

9. Click Test connection and open your Gmail inbox.

10. 123FormBuider sends a verification code. Copy your verification code. If the email isn’t there, you might have to whitelist and mark us as a trusted sender.

123Formbuilder SMTP server web forms

11. Back to your SMTP settings, place this verification code, and hit Validate.

123Formbuilder SMTP server web forms

12. Close and open again the window to check the SMTP Status.

123Formbuilder SMTP server web forms

13. Make a test submission.

From now on, all notifications will be sent through your SMTP server.

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Frequently Asked Questions

Here is a list of the most frequently asked questions. For more FAQs, please browse through the FAQs page.

Is this service free?
Yes, we offer a free form builder service. Just sign up to the Basic plan and you are all set. This plan is forever free, but you are limited with a few features only, such as 5 forms per account, 100 submissions per month and you have to keep the backlink to 123FormBuilder on your forms. Check out our features matrix for more information.
How many forms can I create?
It depends on the service plan you are on. Higher service plans enable more features, including more web forms for your account. If you need more forms, go to the My Account section of your account and click the upgrade button. To create an unlimited number of forms, either upgrade to the Platinum service plan or higher. Consult our features matrix for more information.
How can I publish my forms?
You can publish your forms in many ways, by using their direct URL or HTML link, embedding them with a JavaScript code, Inline HTML or iFrame, using the Facebook app or the WordPress plugin, using popups, the Blogger code snippet and many more. Once you have created and customized your form, go to the Publish section to complete your work. Read more in our documentation.
How do I change my form design?
You can change the design of your form in the Themes section, which is located in your form settings. We offer a set of more than 30 predefined form themes for your forms, but you can also create your own from scratch. You can customize the submit button, the logo and more. To apply your own stylesheets, all forms come with a custom CSS editor.

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