There are 36 autoresponder connectors in Results AI Engage. That number is the actual count of connector files shipped in the plugin, not a marketing figure.
Email marketing, 22 connectors:
ActiveCampaign, Acumbamail, AWeber, BirdSend, Brevo (Sendinblue), Campaign Monitor, Drip, EmailOctopus, emailChef, Flodesk, GetResponse, Kit (ConvertKit), Loops, Mailchimp, MailerLite, Mailjet, Mailvio, Moosend, Sender, SendFox, Sendiio and SendX.
Ecommerce and CRM, 9 connectors:
Customer.io, Encharge, GoHighLevel, HubSpot, Keap (Infusionsoft), Klaviyo, Omnisend, Ortto and VBOUT.
On this site, 2 connectors:
FluentCRM and MailPoet. Both run inside your own WordPress install, so there is no API key to paste. The card simply reports whether the plugin is active.
Newsletters, 1 connector:
beehiiv.
Funnels and courses, 1 connector:
Systeme.io.
Self hosted, 1 connector:
Sendy, which runs on your own server.
Stable and beta:
8 connectors are marked stable, meaning they have been smoke tested against a live account: ActiveCampaign, Brevo (Sendinblue), Kit (ConvertKit), FluentCRM, GetResponse, Mailchimp, MailerLite and MailPoet. The other 28 carry a beta badge on their card. Beta means the connector is written and working but has not yet been tested here against a live account of that provider, so test yours with a real opt-in before you rely on it.
If one connector file ever fails to load, Engage quarantines that single file, keeps everything else running, and shows an admin notice naming it. The quarantine clears by itself on the next plugin update, so a fixed connector comes straight back.