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Omnisend

Estimated reading: 2 minutes Updated August 1, 2026

Omnisend is an omnichannel marketing automation platform for e-commerce. Advanced Form Integration creates contacts in Omnisend from WordPress form submissions.

What you’ll need

  • An active Omnisend account.
  • Your Omnisend API credentials (see below).
  • The Advanced Form Integration plugin installed and activated.

Get your Omnisend API key

  1. Sign in to your Omnisend account.
  2. Go to Store Settings → API Keys and create a new API Key.
  3. In WordPress, go to AFI → Settings → Omnisend.
  4. Click Add Account, paste the API key, and give the account a name.
  5. Click Save.

Omnisend authenticates API requests with the X-API-KEY header.

Create the integration

  1. Go to AFI → Add New.
  2. Give the integration a name, for example Form to Omnisend.
  3. Under Trigger, pick the form plugin and the specific form.
  4. Under Action → Platform, select Omnisend.
  5. In Task, choose Create New Contact.
  6. Pick the saved account.
  7. Map your form fields onto the fields listed below.
  8. Optional: open Conditional Logic to limit which submissions are sent.
  9. Click Save Integration.

Screenshot: AFI field-mapping screen with Omnisend contact fields visible

Tasks supported

Create New Contact

Creates a new contact in Omnisend via the v3 API.

Field Field key Required Notes
Email email Yes
Phone phone No
First Name firstName No
Last Name lastName No
Country country No ISO code
State state No
City city No
Address address No
Postal Code postalCode No

Pro features

The Pro integration extends the free version with additional capabilities. Pro uses the same Omnisend connection.

Feature comparison

Feature Free Pro
Create contact
Standard fields
Custom fields No

Conditional logic example

Only send data to Omnisend when specific conditions are met. For example, add a condition on a form field to control which submissions are forwarded.

Troubleshooting

Nothing arrives in Omnisend

Open AFI → Log and find the most recent entry. AFI stores the request URL, body, and raw response.

API credentials rejected

Verify your credentials in your Omnisend account settings. If they were regenerated, update them in AFI → Settings → Omnisend.

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