AFI AFI

SendX

Estimated reading: 2 minutes Updated August 1, 2026

SendX is an email-marketing platform with built-in automation, popular with bloggers and small businesses. Advanced Form Integration sends form submissions to SendX as new contacts, with optional tag and custom-field mapping in Pro. the Pro version adds custom fields and tags.

What you’ll need

  • An active SendX account.
  • Your SendX Team ID and API Key (SendX settings page → bottom of page).
  • The Advanced Form Integration plugin installed and activated.

Get your SendX credentials

  1. Log in to your SendX account.
  2. Go to the SendX settings page and scroll to the bottom.
  3. Copy both the Team ID and API Key.

Connect SendX to AFI

  1. In WordPress, go to AFI → Settings.
  2. Enable SendX and click Save Changes.
  3. Open the SendX tab.
  4. Enter the Team ID and API Key, then click Save Changes.

Create the integration

  1. Go to AFI → Add New.
  2. Configure the trigger.
  3. In Action → Platform, select SendX (or SendX [PRO] if using Pro).
  4. In Task, choose Add Contact.
  5. Map the form fields:
  • Email (required), First Name, Last Name.
  • On Pro: tags (comma-separated, no spaces, e.g., tag1,tag2,tag3) and custom fields using {{datatype--key}}={{value}} format. Example: integer--Age=25. Multiple custom fields separated with |: integer--Age=25|string--Country=USA.
  1. Optional: configure Conditional Logic.
  2. Click Save Integration.

Screenshot: AFI field-mapping screen with SendX contact, tag, and custom field inputs visible

Tasks supported

Add Contact

Adds the form submitter as a contact in SendX. Re-submissions update the existing contact rather than creating duplicates.

Pro features

The Pro SendX integration adds:

  • Tag application: comma-separated list of tags (no spaces between tags).
  • Custom field mapping with typed values via datatype--key=value syntax: supports string, integer, boolean, date types.

Conditional logic example

Apply tag vip-customer only when the form’s customer_tier field equals “premium”. Standard subscribers still get added but skip the VIP tag.

Troubleshooting

Integration doesn’t fire

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

“Authentication failed”

SendX requires both Team ID AND API Key. Both are at the bottom of the SendX settings page. Copy them carefully.

Custom field syntax error

Custom fields use datatype--key=value (two hyphens between datatype and key). Wrong syntax causes silent drops. Check the AFI log for the exact value sent.

Related docs

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