Preflight validates your CSV, shows a full diff of creates, updates, blocked rows, and skipped records, and lets you push approved records safely — without touching HubSpot until you're ready.
14-day free trial. Full access. Cancel anytime.
847
Creates
234
Updates
12
Blocked
156
Skipped
| Contact | Field | Current in HubSpot | Incoming Value |
|---|---|---|---|
| jane@acme.co | company | Acme Inc | Acme Corp |
| tom@globex.io | jobtitle | Sales Rep | Account Executive |
| lisa@initech.com | phone | 555-0100 | 555-0199 |
| mark@wayne.co | company | empty | Wayne Enterprises |
Showing 4 of 234 updates
10,000
Rows per import
4
Classification types
100%
Field-level accuracy
0
Surprises in HubSpot
The problem
Most teams discover import damage after it's already in HubSpot. Preflight gives you full visibility before anything is written.
Upload CSV directly to HubSpot
Hope the column mapping is right
Overwrite existing data with empty fields
Create hundreds of duplicate contacts
Spend hours cleaning up the mess
No record of what changed or why
Upload CSV to a safe staging environment
Headers auto-mapped to HubSpot properties
Empty fields are ignored — no overwrites
Duplicates detected and blocked automatically
Review every change before it touches HubSpot
Full audit trail for every import
How it works
Preflight sits between your CSV and HubSpot. Upload, preview, then push — with full control at every step.
Drag and drop your file. Preflight parses headers, normalizes emails, validates formatting, and catches duplicates — all before touching HubSpot.
Every row is classified: create, update, skip, or block. For updates, you see the exact field-level changes — current value vs. incoming value.
Approve the staged changes and push. Only creates and updates are sent. Blocked and skipped rows never touch HubSpot.
Features
Preflight isn't just a validator — it's a staging layer with full diff visibility, so you can import with confidence every time.
The hero feature. See every field that will change, side by side with the current HubSpot value. Creates, updates, blocks, and skips — all classified before you push.
Missing emails, invalid formats, duplicate rows within the CSV — all caught and blocked automatically. The only required field is email. No over-validation.
30+ common CSV header variations automatically mapped to HubSpot properties. 'First Name', 'first_name', 'firstname' — they all resolve to the right field.
If your CSV has a blank value for a field, Preflight won't overwrite the existing HubSpot data. This single rule prevents the most common import disaster.
Records are pushed to HubSpot in efficient batches of 100 using the official batch API. Rate limits are respected. If a batch fails, the rest still go through.
Every upload, every staging result, every push — stored permanently. When someone asks 'what changed?', you have the answer with the exact file and timestamp.
Who it's for
If you're the one who gets pinged when contact data is wrong, Preflight is for you.
You maintain data quality across the GTM stack. Preflight gives you a review layer so imports don't bypass your standards.
You handle list imports from events, partners, and enrichment tools. Preflight shows you exactly what will change before reps see it.
You're responsible when something breaks. Preflight gives you an audit trail and the confidence that imports won't corrupt your data.
Pricing
One plan with everything. No per-seat charges. No row limits games.
$199
per month
Everything included:
Cancel anytime. No long-term contracts.
FAQ
You get full access to every feature — upload CSVs, preview diffs, and push approved records to HubSpot. Nothing is locked or limited during the trial.
Never. Preflight only reads your existing contacts for comparison during the staging phase. Absolutely nothing is written to HubSpot until you explicitly review the staging report and click the push button.
Preflight supports up to 10,000 rows per CSV upload. For larger datasets, split your file into multiple imports. Each import gets its own staging report and audit record.
Preflight auto-maps 30+ common CSV header variations to standard HubSpot contact properties (name, email, company, phone, job title, address fields, and more). Any unrecognized columns are passed through as-is — they may match custom properties in your HubSpot account.
Empty values are never treated as changes. If a field is blank in your CSV but has a value in HubSpot, Preflight will not overwrite it. This is one of the most important safety features.
Yes. Cancel from your billing settings at any time. You'll keep access through the end of your current billing period. No cancellation fees.
No. Preflight connects via HubSpot's standard OAuth flow. You authorize read and write access to contacts, and that's it. No HubSpot marketplace installation or CRM card setup required.
Every CSV import without a staging layer is a risk to your CRM data. See the diff first.
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