--- title: "Supabase + SendGrid: real-time two-way sync | Stacksync" description: "Real-time two-way sync between Supabase and SendGrid. Field mapping, row-level audit, and no backend to maintain." canonical: https://www.stacksync.com/supabase/sendgrid last_modified: 2026-07-29 --- # Real-time two-way sync between Supabase and SendGrid Map fields once for two-way sync. Permitted Supabase row inserts reach SendGrid, and updates in SendGrid reach Supabase. [Sign up with Supabase](https://app.stacksync.com/) [Request a demo](https://www.stacksync.com/book-a-demo) | | | | --- | --- | | <200ms | p95 propagation | | $100 | Free credits | | SOC 2 | ISO 27001 · HIPAA | Trusted by fast-scaling teams, from YC startups to enterprise platform teams Gladia IDEXX MedPro Eko Ubicloud Vimeo Codility ACERTUS Truora Rinsed Meter Golden Pear Funding Capabilities ## Everything you need to sync SendGrid Connects over REST API (v3), mapped field-by-field into Supabase, with row-level audit and no backend of your own to run. ### Two-way sync Every table maps to a SendGrid object both ways. Insert a row in Supabase and it lands in SendGrid; update a record there and Supabase reflects it back. ### Live, not batched Event Webhook posts delivery and engagement events. Stacksync polls efficiently so updates still land in Supabase within moments. | | | | --- | --- | | Email Activity | Two-way synced | | Contacts | Two-way synced | | List | Two-way synced | ### Every object, standard or custom Any object the API exposes can be mapped into Supabase, with schema discovery doing the field-matching for you. Use cases ## What teams ship first Patterns a two-person team can ship in a week. Any table in Supabase maps to any object in SendGrid. Real-time ### Two-way sync Changes in SendGrid instantly reflect in Supabase, and back. No stale data, no manual imports. Sync CRM contacts and custom fields from Supabase into SendGrid lists, so campaign targeting reflects live sales data. Write SendGrid bounces, spam reports, and unsubscribes back into Supabase to keep opt-in status accurate everywhere. Stream SendGrid Event Webhook engagement data into Supabase for campaign and deliverability reporting. Keep product-usage attributes from Supabase updated on SendGrid contacts to drive lifecycle segments. ## Why builders sync **Supabase and SendGrid** ### Ship without a backend No ETL jobs or sync scripts to maintain. Map Supabase tables to Email Activity and Contacts once, and every write stays in sync automatically. ### Every write moves both ways Changes in Supabase reach SendGrid in real time, and back. email activity, contacts and list stay consistent everywhere they live. ### Built to run in production Your Supabase write-ahead log is read directly, while SendGrid changes are picked up instantly, no polling delays or extra load. How it works ## Four steps, and no backend to maintain 01 ### Connect OAuth your project and the system. Schemas read automatically. 02 ### Map Tables to objects, fields to fields. Transforms run inline. 03 ### Sync Historical backfill, then continuous CDC both ways. 04 ### Monitor Row-level logs, latency and one-click replay. ## Sync Supabase with SendGrid from React One client, the same auth as your Supabase project. If you know the Supabase client, you already know this one. [Read the docs](https://docs.stacksync.com/) ``` import { createClient } from '@stacksync/client'const stacksync = createClient( process.env.SUPABASE_URL, process.env.STACKSYNC_API_KEY)export default function Deals() { const [deals, setDeals] = useState([]) useEffect(() => { stacksync.from('deals').select('*') .then(({ data }) => setDeals(data)) }, []) return } ``` ``` import { createClient } from '@stacksync/client'export async function POST(request) { const stacksync = createClient( process.env.SUPABASE_URL, process.env.STACKSYNC_API_KEY ) const { id, stage } = await request.json() // writes Supabase, propagates to SendGrid const { data } = await stacksync .from('deals') .update({ stage }) .eq('id', id) return Response.json(data)} ``` ``` from stacksync import create_clientstacksync = create_client( os.environ['SUPABASE_URL'], os.environ['STACKSYNC_API_KEY'])# one write, both systemsstacksync.table('deals').update( {'stage': 'won', 'amount': 48000}).eq('id', 'd_10427').execute()for row in stacksync.logs('deals').recent(): print(row['system'], row['latency_ms']) ``` ``` import { createClient } from '@stacksync/client'Deno.serve(async (req) => { const stacksync = createClient( Deno.env.get('SUPABASE_URL'), Deno.env.get('STACKSYNC_API_KEY') ) const { record } = await req.json() await stacksync.from('accounts').upsert({ id: record.id, owner: record.owner_email }) return new Response('ok')}) ``` ``` // claude_desktop_config.json{ "mcpServers": { "stacksync": { "command": "npx", "args": ["-y", "@stacksync/mcp"], "env": { "STACKSYNC_API_KEY": "sk_live_...", "SUPABASE_URL": "https://xyz.supabase.co" } } }}// your agent now reads and writes// every connected system of record ``` ``` -- Supabase stays the source of truthupdate deals set stage = 'won', amount = 48000 where id = 'd_10427';-- Stacksync picks up the change via CDC-- and writes it to every mapped systemselect system, object_id, latency_ms, status from stacksync.write_log where table_name = 'deals' order by created_at desc limit 10; ``` Pricing ## Free for Supabase builders Normally $1,000/mo. Yours at $0 during launch week. Launch week: 10,000 accounts only Supabase Connect $1,000 $0 / month Plus $100 in sync credits on the house. No card, no sales call, the same self-serve start you got with Supabase. 7,840 of 10,000 claimed 2,160 left [Claim my $100 in credits](https://app.stacksync.com/) [Talk to an engineer](https://www.stacksync.com/book-a-demo) Takes about 2 minutes · cancel in one click · export every mapping you build - 1 active two-way sync, real-time - AI agents and MCP servers - Workflows on any synced change - 3 collaborators - Migration review with a Stacksync engineer “We went from treating data integration as a necessary evil that consumed our best engineers to having it just work, reliably, at scale, in real-time.” Alex Marinov · VP of Technology, ACERTUS Trusted by 1,000+ teams · SOC 2 Type II · ISO 27001 Security ## Security teams trust Stacksync The integration layer is where compliance reviews stall. Row-level audit, residency and DPF certification for US, EU, UK and CH transfers, so procurement is a form, not a quarter. [Learn more about security](https://www.stacksync.com/security) | | | | --- | --- | | | SOC 2 Type II | | ISO 27001 | ISO 27001 | | HIPAA BAA | HIPAA BAA | | GDPR | GDPR | | CCPA | CCPA | | | DPF US-EU-UK-CH | → Security with benefits ### SSO & SCIM Okta, Azure and Google SSO, with SCIM provisioning. ### Alerts Sync issues to email, Slack, PagerDuty or WhatsApp, with retry and revert. ### Secure connections Connects to your systems your way. OAuth 2 SSH tunnelling SSL certificates IP whitelisting VPN gateway VPC peering FAQ ## Supabase + SendGrid FAQ ### How does Supabase sync with SendGrid? Stacksync watches your Supabase tables via CDC and SendGrid's API in real time. A permitted write on either side maps to fields on the other, with row-level logs for every change. ### Is the Supabase + SendGrid sync two-way? Yes. Changes made in Supabase propagate to SendGrid and vice versa. Field write controls preserve read-only values within the two-way sync. ### Do I need to write backend code to connect Supabase and SendGrid? No. Authenticate both systems, pick objects and fields to map, and enable the sync. Most integrations go live in minutes with no infrastructure to manage. ### Is my SendGrid and Supabase data secure in transit? Stacksync is SOC 2 Type II, ISO 27001, HIPAA, GDPR, CCPA and CSA STAR certified, and holds the EU-US, UK and Swiss Data Privacy Framework (DPF) certification. Data is encrypted in transit, with a zero-persistent-storage architecture: records aren't retained after a sync operation. ## Sync Supabase and SendGrid this afternoon [Sign up with Supabase](https://app.stacksync.com/) [Request a demo](https://www.stacksync.com/book-a-demo)