Real-time
Two-way sync
Changes in Citus or SendGrid instantly reflect in both systems. No stale data, no manual imports.
Database ⇄ Business productivity
Citus to SendGrid integration — real-time, two-way sync
Keep Citus and SendGrid in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
- SOC 2 and 6 other compliance frameworks
- POC with real engineers in minutes
Adopted by fast-scaling companies moving mission-critical data in real time
Case study
Migrated from Mulesoft
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Migrated from Fivetran
Case study
Migrated from Celigo
Why teams connect Citus and SendGrid
Mirror SendGrid's data into Citus so your own code can read and write it like any other table, with changes flowing both ways in seconds.
Engineers integrate with tools like SendGrid through APIs, which means auth, pagination, rate limits, webhooks, and retry logic, all maintained forever and all different for every tool. Meanwhile the data would be trivial to use if it simply lived in Citus.
Stacksync mirrors List, Segments, Categories, Senders from SendGrid into Sequences, Distributed tables, Reference tables, Local tables in Citus and keeps both sides in sync in real time. Your services query the database directly, and inserts or updates your code makes flow back into SendGrid, so the tool and the database never disagree.
Common use cases
- Keep product-usage attributes from an operational database updated on SendGrid contacts to drive lifecycle segments
- Reconcile transactional email activity with support tickets so agents see what a customer was sent
- Use a Citus cluster as the scalable operational store behind a customer-facing app while syncing summaries back to internal tools.
- Consolidate per-tenant rows from distributed tables into per-customer reporting databases.
Read SendGrid with a query
Records from SendGrid are ordinary rows in Citus; join them, index them, and use them in application logic without touching the vendor API.
Automate SendGrid from your codebase
Write to the synced tables in Citus and Stacksync propagates the change into SendGrid, replacing custom integration code.
React to changes as they happen
Updates in SendGrid arrive as row changes in Citus, so triggers, jobs, and services can respond in near real time.
What you can sync between Citus and SendGrid
Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.
| Citus objects | SendGrid objects | |
|---|---|---|
| Views Curated projections over distributed data, often used as read-only sync sources. | Email Activity Synced with incremental and full sync per the Stacksync docs. | |
| Sequences Key generators that matter when external writes must not collide with application inserts. | Contacts Marketing recipients upserted from CRM or database records, including custom field values. | |
| Distributed tables Tables sharded across worker nodes by a distribution column; the main sync target for large datasets. | List Synced with incremental and full sync per the Stacksync docs. | |
| Reference tables Small lookup tables replicated to every node, synced like ordinary Postgres tables. | Segments Query-based contact groups whose membership SendGrid computes from contact fields. | |
| Local tables Coordinator-only tables that behave exactly like standard PostgreSQL tables. | Categories Synced with incremental and full sync per the Stacksync docs. | |
| Schemas Standard Postgres namespaces used to scope what a sync user can read and write. | Senders Synced with incremental and full sync per the Stacksync docs. |
What ships with Citus ⇄ SendGrid
Connect Citus and SendGrid for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Citus–SendGrid connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Citus or SendGrid data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
At scale
Event queues
Handle millions of events per minute without losing a single Citus or SendGrid record.
Observability
Monitoring
Track your Citus ⇄ SendGrid sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Citus and SendGrid.
How the Citus and SendGrid connectors work
Citus
- Integration surface
- PostgreSQL wire protocol; any standard Postgres driver connects to the coordinator node
- Authentication
- Database credentials (standard PostgreSQL authentication; managed deployments add cloud IAM options)
- Change detection
- PostgreSQL logical decoding / CDC, with caveats: changes to distributed tables occur on worker shards, so CDC setup differs from single-node Postgres
- Capabilities
- read · write · CDC
SendGrid
- Integration surface
- REST API (v3)
- Authentication
- API key (create in SendGrid Settings > API Keys with Custom Access / Full Access for the objects to sync; key begins with "SG")
- Change detection
- Event Webhook posts delivery and engagement events (processed, delivered, open, click, bounce, spam report) to an HTTP endpoint; contact and list changes are detected by polling
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to the platform's API rate limits; contact upserts are batched, asynchronous jobs rather than per-row writes
How it works
How to connect Citus to SendGrid — three steps, no code
Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.
- 01
Connect your apps
Authenticate Citus and SendGrid with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Citus
connected
SendGrid
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Citus and SendGrid objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.
objects · Citus ⇄ SendGridCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Citus SendGridCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Citus and SendGrid integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Citus and SendGrid: authenticate both systems, choose the objects to sync (such as Citus's Views and Sequences), map fields visually, and changes propagate both ways in milliseconds — no code required.
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SendGrid: Email Activity access requires an add-on subscription in SendGrid; without it the Email Activity API is not available. Citus: Citus is a PostgreSQL extension, not a fork: clients connect with ordinary Postgres drivers and SQL, and the coordinator routes queries to shards. Stacksync's field mapping accounts for these differences between Citus and SendGrid without custom code.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Citus and SendGrid records are not retained after a sync operation.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Citus and SendGrid connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Citus–SendGrid integration in-house.
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Yes — Stacksync ships production-grade connectors for both Citus and SendGrid. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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Change detection on Citus: PostgreSQL logical decoding / CDC, with caveats: changes to distributed tables occur on worker shards, so CDC setup differs from single-node Postgres. On SendGrid: Event Webhook posts delivery and engagement events (processed, delivered, open, click, bounce, spam report) to an HTTP endpoint; contact and list changes are detected by polling. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
SECURITY
Security teams love Stacksync
As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.
SOC 2 type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS
SSO & SCIM
Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.
Alerts
Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.
Secure connection options
Securely connects to your systems with:
Related integrations
Every pair below is a real-time, two-way sync. Search all 386 integrations available for Citus and SendGrid.
Popular · 8 of 386
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Citus ⇄ Orderful -
Citus ⇄ Resend - Citus ⇄ ServiceNow
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Citus ⇄ Slack -
SendGrid ⇄ Postgres Heroku -
SendGrid ⇄ Airtable -
SendGrid ⇄ AWS Aurora MySQL - SendGrid ⇄ AWS Aurora PostgreSQL
No integrations match .
