Real-time
Two-way sync
Changes in Lemlist or SendGrid instantly reflect in both systems. No stale data, no manual imports.
Business productivity
Lemlist to SendGrid integration — real-time, two-way sync
Keep Lemlist 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 Lemlist and SendGrid
Stop re-entering the same information in Lemlist and SendGrid: Stacksync keeps the records they share consistent in real time, in both directions.
Two tools in the daily stack often hold overlapping information: the same people, the same companies, or the same pieces of work, described twice. The tools do different jobs, so consolidating is not the answer; the overlap just needs to stop drifting.
Stacksync syncs Campaigns, Leads, Activities, Unsubscribes in Lemlist with Segments, Categories, Senders, Single Sends in SendGrid in real time. You choose which records overlap, map the fields that should match, and pick a direction or let changes flow both ways. From then on, an update made in either tool is reflected in the other within seconds, without exports or copy-paste.
Because the sync is field-level, each tool keeps its own extras; only the shared data is held in agreement.
Common use cases
- Stop or pause sequences automatically when a reply converts to a deal in the CRM
- Mirror campaign performance data into BI tools for outbound reporting across senders
- Reconcile transactional email activity with support tickets so agents see what a customer was sent
- Sync CRM contacts and their custom fields into SendGrid lists so campaign targeting reflects live sales data
Where one tool produces events: mirror them in the other
Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.
Where SendGrid is where the team documents or plans: keep its data fed
Information that originates in Lemlist stays current in SendGrid instead of going stale after a one-time paste.
Handoffs between teams
When work started in one tool continues in the other, the shared fields travel with it automatically.
What you can sync between Lemlist 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.
| Lemlist objects | SendGrid objects | |
|---|---|---|
| Webhooks Hook subscriptions define which activity events are pushed to external endpoints. | List Synced with incremental and full sync per the Stacksync docs. | |
| Team Members Sender and seat records map outreach activity to reps in other systems. | Segments Query-based contact groups whose membership SendGrid computes from contact fields. | |
| Campaigns Outreach campaigns are the container leads are pushed into from CRMs and list-building workflows. | Categories Synced with incremental and full sync per the Stacksync docs. | |
| Leads Per-campaign prospect records sync in from enrichment sources and back out with status. | Senders Synced with incremental and full sync per the Stacksync docs. | |
| Activities Engagement records such as opens, clicks, replies, and bounces sync to CRM timelines. | Single Sends One-off marketing campaigns whose stats are read back for reporting. | |
| Unsubscribes Opt-out records propagate to other outreach tools and the CRM for compliance. | Unsubscribe Groups Synced with incremental and full sync per the Stacksync docs. |
What ships with Lemlist ⇄ SendGrid
Connect Lemlist and SendGrid for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Lemlist–SendGrid connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Lemlist 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 Lemlist or SendGrid record.
Observability
Monitoring
Track your Lemlist ⇄ SendGrid sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Lemlist and SendGrid.
How the Lemlist and SendGrid connectors work
Lemlist
- Integration surface
- REST API
- Authentication
- API key
- Change detection
- Webhooks on outreach activity events, plus polling
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to the platform's API rate limits
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 Lemlist 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 Lemlist 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.
Lemlist
connected
SendGrid
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Lemlist 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 · Lemlist ⇄ 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.
Lemlist SendGridCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Lemlist and SendGrid integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Lemlist and SendGrid: authenticate both systems, choose the objects to sync (such as Lemlist's Webhooks and Team Members), map fields visually, and changes propagate both ways in milliseconds — no code required.
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On the Lemlist side: Campaigns, Leads, Activities, Unsubscribes, plus custom fields where Lemlist exposes them. On the SendGrid side: Segments, Categories, Senders, Single Sends. Stacksync auto-detects both schemas and converts types between the two systems.
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Yes. Each object mapping can be bidirectional or restricted to a single direction (both systems accept writes). Read-only mirrors, one-way pushes, and full two-way sync can be mixed in the same integration.
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Common patterns for Lemlist and SendGrid: Where one tool produces events: mirror them in the other; Where SendGrid is where the team documents or plans: keep its data fed; Handoffs between teams. Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.
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Lemlist: REST API. Authentication: API key. SendGrid: 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"). Stacksync manages authentication, retries, and rate limits on both sides.
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Lemlist: Activity events such as replies, opens, bounces, and unsubscribes can be delivered via webhooks, enabling near real-time updates to CRM records without polling every campaign. SendGrid: Contact upserts through the v3 Marketing Campaigns API are asynchronous jobs: the API returns a job ID and processes the batch in the background. Stacksync's field mapping accounts for these differences between Lemlist and SendGrid without custom code.
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
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Lemlist ⇄ Full Enrich -
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Lemlist ⇄ Lusha - SendGrid ⇄ Lusha
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SendGrid ⇄ Microsoft 365 -
SendGrid ⇄ Microsoft Dynamics 365 -
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No integrations match .
