OptinMonster Documentation

Documentation, Reference Materials, and Tutorials for OptinMonster



How to Connect OptinMonster with OmniSend

How to Connect OptinMonster with OmniSend

OptinMonster offers seamless integration with OmniSend email marketing service. Connecting OptinMonster to your OmniSend email list is very easy.

In this article, you’ll learn how to connect OmniSend with OptinMonster.

Before you start, this integration is available with a Plus and higher subscription.
All subscription plans can add custom forms using the Form Embed block.

As a best practice we recommend you also connect your campaigns to Monster Leads as a backup.

Connect OmniSend

When you create a campaign in OptinMonster that you intend to collect leads with you’ll want to integrate with one or more services to send those leads to.

To send leads to OmniSend, follow these steps:

  1. Step 1: Get your Omnisend API Key
    Before you start, you’ll need an Omnisend API Key. To generate and copy the key from your Omnisend account, follow this simple guide. Make sure to give permission for “Contacts.”
  2. Step 2: Navigate to Omnisend Integration
    Go to the Integrations view in the OptinMonster campaign builder, search for Omnisend, and select it.
    Search for and select OmniSend from the OptinMonster campaign builder.
  3. Step 3: Enter Omnisend Account Name and API Key
    In the appropriate fields, enter an Omnisend Account Name (internal use only) and your Omnisend API Key, then click the “Connect to Omnisend” button.
    Enter your details for OmniSend and select the connect button.
    *The Omnisend Account Name can be anything that helps you identify the specific integration within OptinMonster. It’s possible to add more than one Omnisend integration to your account and this is an easy way to differentiate between them when assigning integrations to individual campaigns.
  4. Step 4: Configure Optional Settings
    The following options can also be configured for OmniSend:
    • Tags: Assign any tags you want by typing the tag name and pressing Enter. OmniSend uses Tags instead of Lists.
    • Send welcome email: To have Omnisend send a welcome email when a lead is saved, check the “Send welcome email from Omnisend” box (you’ll need to configure the email in your Omnisend account).
      Configure additional options for your OmniSend integration in OptinMonster.
  5. When you’re finished, Save your campaign.

If you’re serious about jumpstarting your website business growth, then get started with OptinMonster today!

Get Started With OptinMonster Today!

BONUS: Done-For-You Campaign Setup ($297 value)

Our conversion experts will design 1 free campaign for you to get maximum results – absolutely FREE!

Click here to get started →

Add Extra Fields

Field Mapping

This integration supports Field Mapping, so you can easily add radio buttons, phone fields, text areas, number fields, lists, and more!

Before you begin using Field Mapping with OmniSend, please consider the following:

  • Custom fields are referred to as Custom Properties in your Omnisend account.
  • You do not need to create custom fields in Omnisend. OptinMonster will create custom fields once you map your fields.
  • The following custom fields are reserved in OmniSend and cannot be mapped to:
  • Custom field names should only contain letters, numbers, and underscores.
  • You can manage your Custom Properties in OmniSend following this guide.

Form Embed Block

Alternatively, you can add any OmniSend webform to your campaign using our Form Embed block.

Get started adding a custom form to your campaign.

Email Automations

To send emails automatically to new leads you’ll configure email automations within your OmniSend account.

The following guides from OmniSend may be helpful to get started:

For marketing purposes, most users should use the OmniSend automations to send a series of emails to new subscribers.


We strongly recommend you test the optin form before publishing your campaign to ensure it is working as you expect.

Before you begin, please be aware of the following details when testing OmniSend integrations:

  • Previously submitted or already subscribed leads will be overwritten with new data. For this reason, we recommend using a completely unique email address each time you test submit your campaign’s form. You can use a free tool like TempMail.io or learn how to create unlimited unique email addresses from a single Gmail account.
  • If the lead is captured in Omnisend but you do not receive any automated emails it indicates the integration from OptinMonster to Omnisend is correct, and the issue is with the automated email configuration. Omnisend controls email automation exclusively. If you require assistance in troubleshooting email automations we recommend reaching out to Omnisend support directly.

Get started testing with the Live Site Inspector tool.

Spin-a-Wheel Support

If you are configuring a Gamified spin-to-win campaign, spin-a-wheel support is automatically enabled when using our native OmniSend integration. The Coupon Label and Coupon Code will be passed as custom fields with each lead.

If you’re serious about jumpstarting your website business growth, then get started with OptinMonster today!

Get Started With OptinMonster Today!

BONUS: Done-For-You Campaign Setup ($297 value)

Our conversion experts will design 1 free campaign for you to get maximum results – absolutely FREE!

Click here to get started →


Can I send leads to more than one Audience?

Yes! See our Lead Sharing guide to accomplish this.

How do I configure single or double opt-in?

See our guide on single vs. double opt-in.

Can I add leads but not subscribe to either email or SMS subscription?

Yes! Just disable settings for those options.

Can I add an existing tag?

Yes, you can add a new tag or you can add a tag which already exists in your Omnisend account.

Is it possible for me to add a phone field to my campaign?

Yes! You can add a phone field. Learn how to capture phone numbers with OptinMonster.


The campaign is capturing leads but shows 0 conversions in analytics.

Confirm that conversion tracking is turned on for the submit button in your campaign. See our guide on How to Enable Conversion Tracking.

Still stuck?

How can we help?

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