Systeme.io

Systeme.io is an all-in-one marketing platform combining email marketing, sales funnels, online courses, and affiliate management. Advanced Form Integration sends form submissions to Systeme.io as new or updated contacts on a chosen list, with optional tag assignment.

What you’ll need

• An active Systeme.io account.
• A Systeme.io Public API Key (Profile → Settings → Public API Keys).
• The Advanced Form Integration plugin installed and activated.

Get your Systeme.io API key

1. Log in to your Systeme.io Dashboard.
2. Click Profile → Settings → Public API Keys.
3. Create a new API key or copy your existing one.

Connect Systeme.io to AFI

1. In WordPress, go to AFI → Settings.
2. Enable Systeme.io and click Save Changes.
3. Open the Systeme.io tab.
4. Paste the API Key and click Save Changes.

Create the integration

1. Go to AFI → Add New.
2. Configure the trigger.
3. In Action → Platform, select Systeme.io.
4. In Task, choose Subscribe to List.
5. Map the form fields:

• Email (required).
• First Name, Last Name, Phone, Country.
• Custom contact fields defined in your Systeme.io account.
• Tag: pass a Systeme.io Tag ID (numeric). Format example: Event Volunteer: 123456: only the ID 123456 gets sent to the API.

1. Optional: configure Conditional Logic.
2. Click Save Integration.

Tasks supported

Subscribe to List

Creates or updates a contact in your Systeme.io account, optionally assigning a tag. Re-submissions with a known email update the existing contact and apply the tag.

Conditional logic example

Apply Systeme.io tag ID 123456 (e.g. “Event Volunteer”) only when the form’s volunteer_signup checkbox is checked. Standard signups skip the tag.

Troubleshooting

Integration doesn’t fire

Open AFI → Log and find the most recent entry. The log shows the request payload sent to Systeme.io and the response received, usually pointing straight at the cause.

“422 – Unprocessable Entity”

Common causes:

• Long text fields: Systeme.io enforces a 255 character limit on each custom field. Submissions with longer values are rejected. Limit long-text fields in your form settings.
• Invalid tag ID: confirm the Tag ID exists in your Systeme.io account.
• Country name mismatch: Systeme.io expects ISO codes, not full country names.

Test minimally first

If a complex integration fails, simplify: try a minimal integration with only Email and a valid Tag ID. Once that works, incrementally add more fields and re-test each time.

Related docs

• Send Contact Form 7 submissions to Systeme.io
• Send WPForms submissions to Systeme.io
• Send Gravity Forms submissions to Systeme.io
• Conditional Logic