The Connections tab is the one place your autoresponder keys live. Connect a service there once, and it appears in the Autoresponder list on the Opt-in tab of every campaign.
Where to find it:

Open ResultsAiX Engage and click the Connections tab. The top card tells you how many of the 39 services you have connected. Below it, services are grouped: Ecommerce and CRM, Email marketing, Funnels and courses, Newsletters, On this site and Self hosted.
Connecting a service:

- Find your provider's card.
- Click Get your key under a field. It opens the right page on the provider's site in a new tab.
- Not sure where the key is? Click How to find this in 60 seconds for a short walkthrough.
- Paste the key, and any other field the card asks for.
- Click Connect.
Engage saves the key and tests it straight away. When the test passes, the card shows Connected and the provider's lists are loaded. When it does not, you see the provider's own reason in plain words, and what you typed stays in the boxes so you only fix the one field.
A connected card:

A connected card shows Connected at the top right and three buttons:
- Test: a live check with the provider. The quickest way to confirm a key still works.
- Edit key: opens the fields again to paste a new key.
- Disconnect: removes the stored key. Engage asks you to confirm first. Your stored leads are kept.
Keys are never sent back to your browser in full. Edit key shows a masked value, and leaving a masked field untouched keeps the stored key.
AWeber has two ways in:


AWeber (Developer OAuth) gives full access to your AWeber lists:
- Create a small app in your AWeber developer account. Its name must not contain the word AWeber.
- Set Client Type to Public, and set the OAuth Redirect URL to the exact value shown on the card.
- Paste your Client ID and click Connect to save it.
- Click Generate Auth Link, approve on AWeber, and copy the code AWeber shows you.
- Paste it into Authorization code and click Connect.
Because the redirect value is fixed, the connection keeps working if your site moves or is copied to a staging site, and no client secret is stored on your site.
AWeber (Legacy) is the quick way in with no app to create. Paste your AWeber list name, and optionally a Web form ID, then click Connect. It sends subscribers to that one list and cannot read your lists back.
Services that run on your own site:

FluentCRM, MailPoet and ResultsAiX Mailer live inside WordPress, so there is nothing to paste. When the plugin is active on the same site, the card says Ready to use. Install and activate it, then click Check again.
ResultsAiX Mailer on another site:

If your ResultsAiX Mailer runs on a different WordPress site you own, use ResultsAiX Mailer (on another site) in the Self hosted group:
- On the Mailer site, open ResultsAiX Mailer, then Settings, and create a key under Write access. Copy it straight away. It starts with raimw_.
- Back in Engage, paste the Mailer site address, for example https://news.yoursite.com, and the Mailer write key.
- Click Connect.
Your Mailer lists then appear when you set up a campaign. Each lead is saved on your site first, then added to the list you choose with its tags, and any Mailer automation that starts on joining a list or on a tag runs as normal. The write key can add people to lists and tag them, and nothing else.
Lists are kept for six hours:
Engage keeps a copy of your lists for six hours, because the builder asks for them often and they rarely change. Created a new list? Click Refresh beside the List box on the Opt-in tab.
Already on the list counts as success:
When a returning visitor opts in again, the provider usually says they are already on the list. Engage treats that as a success, so the visitor sees your normal Success message.
A real example:
Northside Coffee Roasters connects MailerLite for their main newsletter and Kit (ConvertKit) for their roast notes. Both cards show Connected. In the builder, the Brew Guide Exit Popup sends leads to the MailerLite list Brew Guide Downloads, and the Roast Notes Slide In sends them to the Kit form Roast Notes.
Connecting several services:
You can connect as many services as you like. Each campaign picks one on its Opt-in tab, so one popup can feed MailerLite while another feeds Kit. Add a Webhook URL to the same campaign to reach a second place.
When you change a key:
If you create a new key with your provider, click Edit key on the card, paste the new key, and click Connect. Every campaign using that service carries on with the new key; there is nothing to change in the campaigns.
Tips:
- Connect the service, then send one test opt-in from your own site and check it arrives.
- See The Full Connector Roster for every service, and Webhooks And Raw Form Embeds for anything not listed.