Real-time
Two-way sync
Changes in Google Pubsub or SendGrid instantly reflect in both systems. No stale data, no manual imports.
Developer tools ⇄ Business productivity
Google Pubsub to SendGrid integration — real-time, two-way sync
Keep Google Pubsub 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
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Why teams connect Google Pubsub and SendGrid
Connect the tickets, records, and events in SendGrid to the systems engineering runs in Google Pubsub, kept current in real time and in both directions.
SendGrid is where customer-facing and operational work happens: the tickets, conversations, contacts, and records a team touches every day. Google Pubsub is where engineering runs the systems behind that work — the issue trackers, message brokers, directories, and monitors that keep services moving. The same items, people, and events matter to both, and when the only link between them is a manual hand-off or an overnight export, each side acts on a stale copy of what the other already knows.
Stacksync syncs Senders, Single Sends, Unsubscribe Groups, Email Activity in SendGrid with Ordering keys, Topics, Subscriptions, Messages in Google Pubsub field by field, in real time, and in both directions. You decide which system owns which fields; Stacksync maps the overlap, resolves conflicts by rules you set, and keeps every copy current, with no middleware to build and no API limits to babysit.
Common use cases
- 01 Keep product-usage attributes from an operational database updated on SendGrid contacts to drive lifecycle segments
- 02 Reconcile transactional email activity with support tickets so agents see what a customer was sent
- 03 Attach an Avro or Protocol Buffer schema to a topic so every message Stacksync publishes is validated against an agreed contract.
- 04 Publish new and changed database rows as messages to a Pub/Sub topic so multiple downstream subscriptions consume the change stream independently.
Common sync patterns
One shared record across both systems
Where both systems keep records for the same contacts, items, or users, a correction in either updates the other, ending dual maintenance and keeping IDs aligned for every other flow.
Where Google Pubsub tracks engineering work: requests become issues
A ticket or request raised in SendGrid opens or updates a matching issue in Google Pubsub, and status, comments, and resolution flow back, so support and engineering work the same item instead of retyping it.
Where Google Pubsub moves messages between services: activity lands on the stream
Records created or changed in SendGrid publish to the queue or topic in Google Pubsub as they happen, so downstream services react to real events rather than polling for them.
What you can sync between Google Pubsub 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.
| Google Pubsub objects | SendGrid objects | How this pairing syncs | |
|---|---|---|---|
| Ordering keys Tag messages so those sharing a key deliver in publish order when message ordering is enabled; throughput capped at 1 MBps per key. | Segments Query-based contact groups whose membership SendGrid computes from contact fields. | Ordering keys is specific to Google Pubsub and Segments to SendGrid — each maps to any object or custom field on the other side. | |
| Topics Named resource publishers send to; Stacksync publishes each record change as a message to a topic for downstream subscribers to consume. | Categories Synced with incremental and full sync per the Stacksync docs. | Topics is specific to Google Pubsub and Categories to SendGrid — each maps to any object or custom field on the other side. | |
| Subscriptions A stream of messages from one topic; Stacksync consumes here via StreamingPull or a push endpoint, acknowledging each message after a successful write. | Senders Synced with incremental and full sync per the Stacksync docs. | Subscriptions is specific to Google Pubsub and Senders to SendGrid — each maps to any object or custom field on the other side. | |
| Messages The synced unit: base64-encoded data plus attributes, ordering key, messageId and publishTime; capped at 10 MB each. | Single Sends One-off marketing campaigns whose stats are read back for reporting. | Messages is specific to Google Pubsub and Single Sends to SendGrid — each maps to any object or custom field on the other side. | |
| Schemas Avro or Protocol Buffer definitions bound to a topic; validate that every published message matches the agreed structure. | Unsubscribe Groups Synced with incremental and full sync per the Stacksync docs. | Schemas is specific to Google Pubsub and Unsubscribe Groups to SendGrid — each maps to any object or custom field on the other side. | |
| Snapshots Captured subscription state for seek/replay; lets already-acknowledged messages be redelivered from a point in time. | Email Activity Synced with incremental and full sync per the Stacksync docs. | Snapshots is specific to Google Pubsub and Email Activity to SendGrid — each maps to any object or custom field on the other side. |
How changes propagate between Google Pubsub and SendGrid
Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.
Google Pubsub SendGrid Sub-second propagation
DetectionGoogle Pubsub notifies Stacksync of record changes through webhook events. Consumes messages as they arrive on a subscription — StreamingPull (long-lived gRPC) or a push subscription delivering each message as an HTTPS POST.
DeliveryEach detected change is written to SendGrid through its API, with automatic retries and rate-limit backoff.
SendGrid Google Pubsub Sub-second propagation
DetectionSendGrid notifies Stacksync of record changes through webhook events. Event Webhook posts delivery and engagement events (processed, delivered, open, click, bounce, spam report) to an HTTP endpoint.
DeliveryEach detected change is written to Google Pubsub through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Google Pubsub: Per-region throughput quotas (publish up to ~4 GB/s in large regions); 10 MB max per message and per publish request, 1,000 messages per request, and 1 MBps per ordering key.
- SendGrid: Subject to the platform's API rate limits; contact upserts are batched, asynchronous jobs rather than per-row writes.
What ships with Google Pubsub ⇄ SendGrid
Connect Google Pubsub and SendGrid for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Google Pubsub–SendGrid connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Google Pubsub 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 Google Pubsub or SendGrid record.
Observability
Monitoring
Track your Google Pubsub ⇄ SendGrid sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Google Pubsub and SendGrid.
How the Google Pubsub and SendGrid connectors work
Google Pubsub
- Integration surface
- REST and gRPC (Cloud Pub/Sub API v1)
- Authentication
- Google Cloud IAM via OAuth 2.0 / service-account credentials (JSON key or workload identity); requires roles such as pubsub.publisher and pubsub.subscriber
- Change detection
- Consumes messages as they arrive on a subscription — StreamingPull (long-lived gRPC) or a push subscription delivering each message as an HTTPS POST; no modified-date polling
- Capabilities
- read · write · webhooks
- Rate limits
- Per-region throughput quotas (publish up to ~4 GB/s in large regions); 10 MB max per message and per publish request, 1,000 messages per request, and 1 MBps per ordering key
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 Google Pubsub 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 Google Pubsub 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.
Google Pubsub
connected
SendGrid
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Google Pubsub 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 · Google Pubsub ⇄ 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.
Google Pubsub SendGridCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Google Pubsub and SendGrid integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Google Pubsub and SendGrid: authenticate both systems, choose the objects to sync (such as Google Pubsub's Ordering keys and Topics), map fields visually, and changes propagate both ways in milliseconds — no code required.
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SendGrid: Email Activity data retention depends on subscription level (typically 7 days by default, 30 days with the add-on). Google Pubsub: Push subscriptions deliver as HTTPS POSTs with base64-encoded data and can carry an OIDC JWT for authentication; the endpoint must return a 2xx (or 102) to ack. Stacksync's field mapping accounts for these differences between Google Pubsub 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 Google Pubsub 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 Google Pubsub and SendGrid connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Google Pubsub–SendGrid integration in-house.
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Yes — Stacksync ships production-grade connectors for both Google Pubsub 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 Google Pubsub: Consumes messages as they arrive on a subscription — StreamingPull (long-lived gRPC) or a push subscription delivering each message as an HTTPS POST; no modified-date polling. 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 trust 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
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 267 integrations available for Google Pubsub and SendGrid.
Popular · 8 of 267
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Google Pubsub ⇄ Smartsheet -
Google Pubsub ⇄ Sysaid -
Google Pubsub ⇄ Wrike -
Google Pubsub ⇄ Zendesk -
SendGrid ⇄ PagerDuty -
SendGrid ⇄ Jira -
SendGrid ⇄ Rabbitmq -
SendGrid ⇄ Azure Service Bus
No integrations match .
