Connect to
what you already use
Most "integrations" you'd pay extra for elsewhere ship as built-in apps in EternalEngine — payments, email, storage, identity. The ones that don't yet are listed below, honestly marked as roadmap.
Native — no integration needed
These ship as part of EternalEngine. No third-party account, no separate billing, no glue code.
Payment Processing
PayGate ships on every paid plan with a Free tier (3.4% + $0.30 all-in per card transaction) and optional paid tiers ($49 Growth, $149 Scale) for lower fees and higher volume caps. Hosted checkout, subscriptions, payouts, dispute tracking — all in-app, no third-party connect required.
Email Delivery
PostFrame handles transactional + marketing email with SPF/DKIM/DMARC, opens, clicks, templates, webhooks. Optionally bring your own SES, SendGrid, Mailgun, or Postmark.
Google + Outlook Calendar feed
BookSlot publishes a subscribable iCal (.ics) feed of your appointments that Google Calendar, Outlook and Apple Calendar read, so every booking lands on the calendar your team already opens. Two-way sync is on the roadmap below.
Cloud File Storage
AssetVault is real S3-compatible cloud storage with folders, version history, tagging, multipart uploads, and tenant-isolated access. No external GDrive or Dropbox required.
REST API & Webhooks
Every app exposes a versioned REST API with schema-validated inputs, structured logging, and tenant-scoped access. Webhooks fire on key events such as a paid invoice, a booked appointment or an accepted estimate — the way to connect a system we don't list.
SSO — SAML 2.0 / OIDC
Sign in through your identity provider — Okta, Microsoft Entra ID (Azure AD), Google Workspace, Auth0, JumpCloud, or any SAML 2.0 / OIDC provider. Sessions, roles and permissions stay enforced in EternalEngine; SCIM provisioning is on the roadmap.
Connect the tools you already pay for
Inside FlowRelay (Business). Credentials are stored encrypted and deleted the moment you disconnect. A connector whose vendor app is still under review says so on its card instead of pretending.
Push invoices and customers from TitanLedger and get a reconciliation report that shows any drift in cents.
Post to a channel from any workflow step through an incoming webhook you paste in.
A signed inbound hook URL starts workflows from 5,000+ apps; outbound REST hooks send platform events the other way.
Two-way sync between BookSlot and Google Calendar; send workflow e-mail as you. Built and registered — opens to everyone once Google finishes verifying the app.
Invoice and customer push with the same reconciliation report as Xero. Built and registered — opens once Intuit's app review completes.
Two-way calendar sync and send-as for Microsoft 365 and Outlook.com accounts.
Native connections coming next
In active development. Visible in the in-app store with full marketing copy from day one — install opens as each ships.
Surface deal events, invoice payments, project milestones, and AI alerts to your team channels.
Mirror AssetVault folders to your existing cloud storage so your team can access files from familiar tools.
SMS campaigns and notifications via TextCast — bring your own Twilio account or use bundled credits.
Migration helpers + ongoing sync for teams running ClientForge alongside legacy CRMs during the cut-over.
Beyond calendar and send-as — Drive sync, Workspace contact sync, and SCIM user provisioning.
Automated sales tax calculation in TitanLedger invoices for multi-state and multi-country billing.
Tell us what you need. Most-requested integrations get prioritized.
Integration questions
Do you integrate with QuickBooks, Zapier or Slack?
Not yet — QuickBooks & Xero, Zapier & Make, and Slack & Microsoft Teams are all on the roadmap, honestly marked as such rather than implied as shipped.
How do I connect a tool you don't list?
Every app exposes a versioned REST API with schema-validated inputs and tenant-scoped access, plus webhooks that fire on key events like a paid invoice or a booked appointment — that's the way to connect a system not on this page today.
Can I sync bookings to Google Calendar or Outlook?
Yes — BookSlot publishes a subscribable iCal (.ics) feed that Google Calendar, Outlook and Apple Calendar all read. Two-way sync is on the roadmap.
Do you support SSO?
Yes — SAML 2.0 / OIDC single sign-on is available (see the SSO section above for which plan it ships on).
REST API + webhooks ship today
Build any connection you need with our versioned REST API and webhook firehose. Or talk to us about a custom integration — most-requested ones get added to the roadmap.