Substack → Beehiiv
Move Substack content, free and paid subscribers, podcast feeds, domains, and sending operations into Beehiiv without exposing paywalled posts or charging readers twice.
Should you make this move?
Both platforms have a case. Compare what you gain with what you give up before scheduling the cutover.
Substack
- Publishing, email, recommendations, network discovery, and paid subscriptions work out of the box
- Audience, campaigns, automations, and reporting live in one publishing system
- Brand control, automation, data depth, and platform independence are limited
- Automation logic, analytics history, and deliverability settings are not very portable
Beehiiv
- Newsletter publishing, growth, referrals, and monetization are tightly integrated
- Audience, campaigns, automations, and reporting live in one publishing system
- Complex lifecycle automation and broader marketing workflows are comparatively limited
- Automation logic, analytics history, and deliverability settings are not very portable
Beehiiv: Newsletter publishing, growth, referrals, and monetization are tightly integrated. This removes a major source-side concern: Brand control, automation, data depth, and platform independence are limited.
What you lose: Publishing, email, recommendations, network discovery, and paid subscriptions work out of the box. What you inherit: Complex lifecycle automation and broader marketing workflows are comparatively limited.
Know the shape of the move.
This timeline assumes
- Up to 100,000 subscribers, 1,000 posts, one podcast, and five paid tiers
- Only subscribers with valid consent enter the active import.
- The source remains read-only through two successful destination sends.
- A representative pilot cohort is imported before the full audience.
- The migration team records evidence for every blocking verification check.
What survives the move.
“Partial” and “manual” are not footnotes. They are work that must be scheduled and verified.
| Item | Outcome | Impact | What happens | Mitigation |
|---|---|---|---|---|
| Comments and category structures | lost | medium | Beehiiv lists Substack comments and category structures as unsupported. | Archive comments and redesign navigation using Beehiiv tags or sections. |
| Video, podcast-type posts, and photo galleries | lost | high | These post types do not move through the Substack content importer. | Migrate the podcast through RSS and recreate unsupported posts manually. |
| Code blocks and paywall placement | partial | high | Code becomes plain text and prior paywall positions are not preserved. | Rebuild code with HTML snippets and review every paid post’s access boundary. |
| Paid billing ownership | partial | critical | Subscriptions are recreated through a Beehiiv-connected Stripe account and source billing must then stop. | Reconcile every tier and pause Substack billing only after destination subscriptions pass. |
| Eligible email addresses | partial | critical | Active subscribers can move, but acceptance and duplicate handling depend on destination import rules. | Reconcile unique eligible rows against accepted and rejected imports. |
| Unsubscribes, complaints, and cleaned addresses | partial | critical | Suppression evidence does not become an identical native ledger. | Export every inactive class separately and never import it as active. |
| Custom fields | partial | high | Field names, types, reserved keys, and blank handling differ. | Create a field dictionary and test representative values. |
| Tags, groups, and dynamic segments | partial | high | Labels may move, but calculated audience rules require redesign. | Document each segment’s business rule and rebuild only active ones. |
| Past newsletters and web archive | partial | high | Content import can change layout, embeds, URLs, and access boundaries. | Review a stratified issue sample and crawl the archive. |
| Templates and brand settings | manual | high | Source email templates do not run as destination templates. | Build one approved email and web template before importing content. |
| Forms and landing pages | manual | critical | Hosted URLs, embeds, consent text, incentives, and redirects are platform-specific. | Replace and test every acquisition path before source forms stop. |
| Automations and in-flight subscribers | manual | critical | Triggers, branches, waits, goals, and current enrollment state do not continue automatically. | Rebuild each live automation and disposition every enrolled subscriber. |
Where each thing goes.
| Source | Destination | Method | Notes |
|---|---|---|---|
| Email address | Email address | automatic | Required unique identifier. |
| First and last name | Name fields | transform | Normalize blanks and full-name values. |
| Custom or merge field | Custom field | transform | Create the destination field and type first. |
| Audience, tag, or group | Tag, segment, or custom field | transform | Keep provenance without multiplying duplicates. |
| Marketing status | Import eligibility or suppression archive | transform | Never reactivate an inactive address. |
| Campaign or issue | Destination post or broadcast | transform | Review layout, links, images, and access. |
| Automation enrollment | Destination automation state | manual | Continue, restart, exit, or follow up explicitly. |
| Signup form | Destination form | manual | Replace fields, consent, incentives, and redirect behavior. |
| Paid plan and billing state | Destination tier and subscription | manual | Reconcile customer, currency, renewal, and access. |
Make the move recoverable.
Create the source-of-truth backup
Preserve Substack data, configuration, and operating evidence before any destination write.
- Export Substack subscribers separately by active, unsubscribed, complained, cleaned, paid, and complimentary state.
- Export fields, tags, segments, content, reports, forms, automations, integrations, and domain settings.
- Record totals by status, segment, tier, and active automation.
- Hash raw exports and transform copies only.
Proof to capture: A signed manifest reconciles every scoped record class, runtime dependency, export file, count, and hash.
Eligibility ledger
Prevent inactive or unproven contacts from becoming sendable.
- Inventory source values and exceptions.
- Define explicit destination mappings.
- Reject unmapped critical records.
Proof to capture: Save the input, output, command or tool settings, warnings, and final item counts.
Destination audience file
Create deterministic fields, tags, tiers, and provenance.
- Normalize encoding, dates, identifiers, and blanks.
- Run a representative pilot.
- Reconcile accepted, rejected, and transformed rows.
Proof to capture: Save the input, output, command or tool settings, warnings, and final item counts.
The things most likely to hurt.
These are operating limits. Treat every “Stop if” condition as a blocked migration, not a suggestion.
Suppressed contacts become active
Destination active count exceeds signed eligibility.
- Consequence
- Complaints and compliance exposure increase.
- Mitigation
- Import only the approved active file.
Stop if: Any inactive seed becomes sendable.
Both platforms send or bill
Source automations or subscriptions remain active after destination activation.
- Consequence
- Readers receive duplicates or duplicate charges.
- Mitigation
- Freeze source triggers and reconcile billing ownership.
Stop if: A seed receives two messages or charges.
Authentication or reputation regresses
DMARC alignment fails or bounces and complaints exceed baseline.
- Consequence
- Messages are rejected or placed in spam.
- Mitigation
- Verify DNS and send in controlled cohorts.
Stop if: Authentication fails or thresholds breach the approved baseline.
Do the work in this order.
- Days 1–3 · inventory
Inventory and decisions
6–12 hours active2–3 days elapsedOwner review waiting- Inventory Substack data, features, users, domains, and integrations.
- Approve scope, owners, mappings, and exclusions.
Depends on: Substack and Beehiiv administrator access
Stop / go checkpointExport?
Go when: Every critical item has an owner and disposition.
Stop when: Consent, billing, access, or system ownership is unclear.
- Days 3–5 · backup
Backup and reconcile
5–10 hours active1–3 days elapsedExport processing waiting- Create immutable exports and configuration evidence.
- Reconcile counts, totals, and hashes.
Depends on: Approved inventory
Stop / go checkpointTransform?
Go when: Source totals and export manifests agree.
Stop when: Any critical dataset or configuration is absent.
- Days 5–12 · pilot
Map and pilot
10–35 hours active3–8 days elapsedDestination processing and review waiting- Configure Beehiiv and transform representative data.
- Run a pilot containing normal records and every critical edge case.
Depends on: Verified backup
Stop / go checkpointScale?
Go when: Pilot mappings, behavior, access, and evidence pass.
Stop when: Any critical check fails or produces unexplained variance.
- Days 10–20 · cutover
Final delta and switch
5–25 hours active1–5 days elapsedDNS, import, or sync propagation waiting- Freeze production writes in Substack.
- Apply the final delta, switch ownership, and run blocking checks.
Depends on: Passed pilot and approved rollback
Stop / go checkpointOpen production?
Go when: Counts reconcile and one destination system owns production.
Stop when: A source writer remains active or a blocking check fails.
- Days 12–40 · observe
Observe and close
3–18 hours active3–10 days elapsedOperating-cycle evidence waiting- Monitor one complete operating cycle.
- Sign the verification report and close rollback only after stability.
Depends on: Verified cutover
Stop / go checkpointClose rollback?
Go when: No trigger occurs during the agreed observation period.
Stop when: Data, access, delivery, routing, or business results regress.
Cut over with a way back.
Cutover
Make Beehiiv the only production system without losing the final Substack delta.
- Freeze production writes and scheduled actions in Substack.
- Export, transform, and reconcile the final delta.
- Apply the approved delta to Beehiiv.
- Switch domains, forms, integrations, sending, or sync ownership as applicable.
- Run every blocking verification check and keep the source intact.
Proof to capture: Beehiiv owns production, totals reconcile, and every blocking check has durable evidence.
Rollback
Return production ownership to Substack without losing destination-era changes.
- Stop new writes and scheduled actions in Beehiiv.
- Restore the prior Substack routing, forms, integrations, sending, or sync ownership.
- Export the Beehiiv post-cutover delta.
- Review and apply safe destination-era changes to Substack.
- Run the same blocking checks against the restored source.
Proof to capture: Substack again owns production with current data and no duplicate destination action.
- Unexplained critical count or value variance
- Missing or exposed critical data
- Duplicate production action
- Failed access, routing, delivery, or integration check
- A critical feature has no safe destination replacement
Prove the migration worked.
Every blocking check must pass. Capture the evidence before cleanup begins.
| Pass | ID | Check | Method | Expected result | Evidence |
|---|---|---|---|---|---|
V-01Blocking | Eligible count | Reconcile unique eligible emails. | 100% accepted, rejected, or investigated. | Count sheet. | |
V-02Blocking | Inactive protection | Test inactive seed addresses. | No inactive seed is sendable. | Seed log. | |
V-03Blocking | Values and segmentation | Compare 30 stratified subscribers. | All approved mappings match. | Record comparison. | |
V-04Blocking | Acquisition paths | Submit every form. | Correct consent, field, tag, redirect, and welcome behavior. | Form matrix. | |
V-05Blocking | Branches and timing | Run seed accounts through each path. | One correct sequence per seed. | Automation log. | |
V-06 | Archive and access | Review representative free and paid issues. | Approved layout, links, images, canonical, and access. | Content review. | |
V-07Blocking | Authentication and cohorts | Inspect headers and send reports. | SPF and DKIM pass; DMARC aligns; thresholds hold. | Headers and reports. | |
V-08Blocking | Single sending and billing owner | Inspect triggers, integrations, and subscriptions in both systems. | Beehiiv alone owns approved production actions. | Ownership checklist. |
Remove the scaffolding safely.
Safe after: One complete operating cycle, at least seven stable days, and owner sign-off on every blocking check.
- Create final Substack exports and archive verification evidence.
- Revoke temporary credentials, API keys, webhooks, and elevated roles.
- Remove obsolete embeds, forms, jobs, integrations, and DNS records.
- Keep the source intact through the approved retention window.
- Cancel paid plans only after billing, legal, and recovery review.
- Schedule the next Beehiiv backup, access, and migration-playbook review.
When the plan met reality.
First-hand accounts are preferred. Vendor case studies are labeled, and every note below is an editorial paraphrase—follow the link for the full context.
Dave Infante moved a four-year newsletter archive and most of roughly 7,000 subscribers from Substack to Beehiiv in about 90 minutes with Beehiiv engineering support. All approximately 600 paid subscribers moved, while more than 2,000 inactive or suspicious free addresses were intentionally left behind. Comments were lost, some image galleries broke, and Stripe-backed paid subscriptions largely continued unchanged.
- Use the migration to clean inactive and suspicious free subscribers instead of copying every address automatically.
- Confirm paid Stripe subscriptions separately and capture or accept the loss of comments before closing the source publication.
- Subscriber quality mattered more than headline list size, and the cleanup improved the usefulness of the destination list.
- The transfer was fast with vendor help, but comments and some archive presentation did not survive.
Built to be reviewed.
Tested 2026-07-19. Next scheduled review: 2026-10-19.
- Beehiiv: migrate from SubstackAccessed 2026-07-19
- Beehiiv: import a podcastAccessed 2026-07-19
- Beehiiv: paid subscription tiersAccessed 2026-07-19