SendGrid Integration
Send your ATS candidate email through your own SendGrid account — paste an API key, verify a sender, and every interview invite and update carries your domain's reputation.
The email your ATS sends — interview invitations, assessment links, offer notifications — is employer-brand communication, and deliverability is part of the brand. The SendGrid integration lets your organisation route all of that candidate email through its own SendGrid account: your verified sender address, your domain authentication, your deliverability reputation, your sending analytics. Setup is deliberately simple because SendGrid designed it that way — an API key, not an OAuth dance.
Connect it on the Connectors page: paste an API key from your SendGrid account, enter the sender address you've verified with SendGrid, and the ATS verifies the key live against SendGrid's API before storing it encrypted — a key that doesn't check out is rejected on the spot, never silently accepted. SendGrid is a trademark of Twilio Inc.; the integration uses your own account on your own contract.
On this page
01How to set it up, end to end
In your SendGrid account: verify a sender (Single Sender Verification for one address, or authenticate your domain with DNS records for the strongest deliverability), then create an API key with Mail Send permission. In the ATS: Connectors → SendGrid card → paste the key, enter the verified sender email and an optional from-name, click Connect. The ATS validates the key against SendGrid's API immediately; on success, candidate email starts relaying through SendGrid's SMTP service with no further changes anywhere.
02What changes when it's connected
Interview invitations, assessment and video-interview links, and candidate updates go out via your SendGrid account instead of the platform mailer — from your address, signed by your domain where you've authenticated it, visible in your SendGrid activity feed alongside the rest of your transactional email. Disconnecting is one click and reverts sending to the platform default (or your custom SMTP if configured).
03SendGrid, custom SMTP, or neither
Three honest tiers: out of the box, the platform sends on your behalf and everything works with zero setup. Custom SMTP points sending at any mail server you run — Google Workspace, Microsoft 365, your own. SendGrid is the middle path most scaling teams pick: serious deliverability infrastructure without running a mail server, on a vendor you may already use for product email. All three are included; choose per organisation.
Platform architecture & operations
A1Connection architecture
This is a direct connection to a system you host or key yourself: the form takes your instance URL and credential, verifies them with a live call before anything is saved, and stores secrets encrypted at rest. Connection pages show presence ("connected", "saved ✓"), never the values themselves.
Because the credential is yours, rotation is in your hands: replace the key in your own system, paste the new one here, and the live verification confirms it before the old one is overwritten. Disconnecting removes the stored credential immediately.
A2Write semantics and data flow
Every data movement is an explicit action with a logged result. Writes happen on your click — or automatically only where you enabled a rule (auto-push on hire is off by default, per-provider). Reads — imports of people, accounts, or files — run when you press Import, deduplicate against what you already have (clients by name, people by email), skip rather than overwrite, and report created-versus-skipped honestly, which is why re-running any import is safe by design.
Each action writes a row to the app-activity journal (ats_app_activity): what ran, when, for which record, and the outcome — including the vendor's own error text verbatim when something fails. Usage reporting inside the ATS aggregates that same journal, so integration reporting and integration reality cannot diverge.
Anything that leaves the request path — notification fan-out, webhook delivery, activity journalling, mail — runs in fire-and-forget background threads. A slow external endpoint can never make the interface hang, and a failed side effect is logged rather than silently retried into inconsistency.
A3Operational considerations
Connections are organisation-level and gated to owner and admin roles; recruiters use the features a connection powers but cannot connect, disconnect, or reconfigure. Disconnecting removes stored credentials immediately and stops the dependent features visibly, not silently. Data already imported stays yours and editable.
Imported people arrive marked as imported with conservative privacy defaults — no consent is assumed for anyone who never filled in your application form, and retention defaults apply. Everything written is yours to take: CSV exports and the Data Export app cover the same stores the product itself reads. The exit is as open as the entrance — by design, not concession.
A4Placement in the integration topology
This integration is live in the registry today. One connection per provider unlocks every feature it powers, and the topology grid below shows the neighbouring connectors in the same capability area — statuses come from the same registry that drives the in-app hub, so this page can never claim more than the product does. For anything the catalogue does not cover, Webhooks and Zapier are the generic, documented escape hatch.
Dependency map
Interface blueprint
Interaction flow — states, validations, feedback
Neighbouring connectors — Email & Sending
Frequently asked questions
Why an API key instead of a sign-in button?⌄
What does "verified sender" mean?⌄
Can I see what was sent?⌄
Is Expertini affiliated with SendGrid or Twilio?⌄
Cost?⌄
At a glance
- All candidate email relayed through your own SendGrid account
- API key verified live at connect time — bad keys rejected, not stored
- Your verified sender and domain reputation on every message
- Key stored encrypted; disconnect reverts sending in one click
- Sending visible in your SendGrid analytics alongside product email
- Included in the plan — SendGrid's free tier fits modest hiring volume
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