Audience
Import & export
Bring an existing list into Sendcore from a CSV, or export your contacts. Store customers sync automatically, so import is mainly for lists from other tools, events, or offline sign-ups.
Import contacts from CSV
- Go to Audience → Imports.
- Upload a CSV with an email column; optional columns are matched automatically — first name, last name, phone, birthday (powers the birthday automation), tags, subscription status and extra profile fields, including the columns of Omnisend and Shopify exports.
- Map any unmatched columns and start. Contacts are de-duplicated by email.
Big lists are fine: imports run in batches, so tens of thousands of rows go through reliably, and imports are unlimited on every plan, Free included. Re-importing the same file is safe — contacts merge by email: fields the file doesn't carry are never blanked, tags and properties merge with what's stored, and the import summary reports exactly what happened (new, updated, invalid rows, preserved consent choices, suppressed addresses).
A file is not a consent
The presence of an email in a CSV is not a new marketing consent. When the file carries a consent/status column (Shopify's “Accepts Email Marketing”, Omnisend statuses…), a new contact lands with that status, and a declared “unsubscribed” always applies. But an import can never re-subscribe an existing contact: someone who opted out stays opted out even if the file says subscribed, and addresses on the suppression list are never mailed regardless. Rows without consent information enter as “unknown” when new and leave existing contacts untouched.
Coming from Omnisend?
Prefer the one-click migrator over CSV when you can — it also brings tags, images, templates, segments and draft automations. See Migrate from Omnisend.
Only import people who opted in
Importing a list states those people agreed to hear from you. Sending to purchased or scraped lists hurts deliverability and breaks anti-spam law — see Deliverability & compliance.
Export contacts
- Go to Audience → Exports.
- Start an export; when it's ready, download the CSV.
After importing
- Tag the imported batch so you can find and segment it later.
- Check subscription status — imported contacts should be people who consented.
- Build a segment and send them a first campaign.