There are 38 autoresponder connectors in ResultsAiX Engage. That number is the actual count of connector files shipped in the plugin, not a marketing figure.
Email marketing, 23 connectors:
ActiveCampaign, Acumbamail, AWeber (Developer OAuth), AWeber (Legacy), 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, 3 connectors:
FluentCRM, MailPoet and ResultsAiX Mailer. All three run inside your own WordPress install, so there is no API key to paste. The card simply reports whether the plugin is active.
ResultsAiX Mailer shows as connected the moment the Mailer plugin is active, and your Mailer lists appear when you set up a campaign. Leads land in the list you choose and behave exactly like someone who used a Mailer form: that list's double opt-in setting is respected, addresses on your suppression list are refused, and any Mailer automation that starts on joining a list or on a tag runs straight away.
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:
11 connectors are marked stable, meaning they have been smoke tested against a live account: ActiveCampaign, AWeber (Developer OAuth), AWeber (Legacy), Brevo (Sendinblue), Kit (ConvertKit), FluentCRM, GetResponse, Mailchimp, MailerLite, MailPoet and ResultsAiX Mailer. The other 27 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.