Migration

Switching is scary.
We made it boring.

Migrate from Substack, beehiiv, Mailchimp, ConvertKit, Brevo — or any CSV. Keep the audience, keep the momentum.

Supported platforms

One-click connectors for the big players. CSV for everyone else.

Substack

  • Subscribers (free + paid)
  • Posts & archive
  • Stripe customer data
  • Referral history

beehiiv

  • Subscribers & segments
  • Posts & content
  • Tags
  • Referral data

Mailchimp

  • Contacts & lists
  • Tags & segments
  • Campaign history
  • Custom fields

ConvertKit

  • Subscribers & tags
  • Sequences
  • Custom fields
  • Purchase data

Brevo

  • Contacts & lists
  • Tags & attributes
  • Transactional history
  • Custom fields

CSV / Other

  • Any subscriber list
  • Custom field mapping
  • Tags via column headers
  • Flexible delimiter support

How it works

Four steps. Most migrations finish in under five minutes.

1

Upload

Connect your platform or drop a CSV. We auto-detect the source and format.

2

Map Fields

We map columns automatically. Review and adjust any fields that need attention.

3

Review

Preview imported records, check for duplicates, and confirm tag assignments.

4

Import

One click to import. Subscribers land in your CRM with full history intact.

What moves over

Everything that matters. Nothing gets left behind.

Subscribers — free and paid, with status preserved
Blog content — posts, images, and formatting
Tags & segments — mapped to GrowthFox equivalents
Stripe customer data — subscriptions, MRR, payment history
Referral history — referrer/referee relationships and rewards
Custom fields — all custom data carried over
Images — re-hosted to S3 so nothing breaks

Post-migration support

Migration is step one. Keeping subscribers engaged is step two.

Onboarding Email Sequences

Pre-built welcome sequences for migrated subscribers so they know where they are and what changed.

At-Risk Subscriber Detection

AI flags subscribers likely to churn post-migration based on engagement history and recency.

Save Offers

Automated win-back offers for at-risk subscribers. Triggered before they disengage completely.

Churn Prevention

Ongoing monitoring of migrated cohorts with alerts when engagement dips below your threshold.

Your data stays yours. Always.

We earn your business every month. No lock-in. No hostage data. No export fees.

Full public API — read and write everything programmatically
Bulk export anytime — subscribers, content, analytics, all of it
Your Stripe account — we never hold your payment relationships hostage
Custom domains — your brand, your URLs, always
One-click full export — download everything in standard formats

Ready to migrate?

Join the waitlist. We will help you move everything over when you get access.

Coming from Substack? See the full comparison