PostHog → Mixpanel

Step-by-step migration

1. 01

   Export your list from PostHog

   Pull a fresh CSV of every active subscriber. Capture the fields you actually use downstream: email is required, name is standard, signup date and tier (free/paid) are useful when PostHog provides them.

2. 02

   Provision Mixpanel

   Sign up, set sender identity, and verify your sending domain (DKIM, SPF, DMARC). Do this before importing the list; sending from an unverified domain is the single fastest way to land in spam at the moment of cutover.

3. 03

   Import the list and map fields

   Upload the CSV. Map email + name + any custom fields. Decide whether to import as one list or split into segments/tags. PostHog-style organization rarely maps 1:1, so plan the split before the upload, not after.

4. 04

   Rebuild automations and templates

   Mixpanel's automation builder is structurally similar but won't import PostHog's flows directly. Rebuild only what you actively use; the move is a chance to delete the unused ones rather than lift-and-shift dead infrastructure.

5. 05

   Send a test broadcast

   Pick a small segment and send a real broadcast (not just a preview). Verify deliverability, link clicks, and unsubscribe flow. If anything's off, you find it before the announcement, not after.

6. 06

   Announce the move and cut over

   Send your last broadcast from PostHog announcing the new sender domain and what to expect. Cut over DNS and sending from Mixpanel on the same day, not staggered. A dual-send week creates more confusion than it prevents.

PostHog-to-Mixpanel specific gotchas

Universal steps cover most of the work. These are the failure modes unique to this exact pair.

• #1

  Event taxonomy preservation: PostHog and Mixpanel both consume events with names + properties + user identifiers, but property-naming conventions differ. PostHog uses snake_case by convention; Mixpanel mixes Title Case Distinct IDs with custom-property-snake-case. Audit your event taxonomy before migrating; the rename happens once at the SDK level but the dashboard reports will be empty until the new event names start flowing.

• #2

  Historical-data cutover: events sent to PostHog don't transfer to Mixpanel. Plan a parallel-tracking period of 30-90 days where both SDKs fire the same events; reports built on Mixpanel data start populating from the cutover date forward. Don't expect to migrate the historical event log.

• #3

  Identity-resolution swap: PostHog uses distinct_id with anonymous-then-identified linkage; Mixpanel uses distinct_id with the People profile primitive. The conceptual model is similar but the SDK call patterns differ. Re-implement the identify() calls per-platform; verify identity resolution works correctly with a test signup before flipping the canonical SDK.

• #4

  Funnel-and-retention rebuild: dashboards built on PostHog don't transfer to Mixpanel. Document the load-bearing 5-10 funnels and retention curves before migrating; rebuild from definitions in Mixpanel rather than try to translate dashboard-to-dashboard.

• #5

  Replay / flags / surveys decoupling: if you're using any of these on PostHog and want to keep them, pick separate vendors BEFORE flipping. Don't flip PostHog off and discover mid-migration that you needed replay for an active production debugging session. Migration order: stand up Mixpanel + replay vendor + flags vendor in parallel; cut over by product capability one at a time.

• #6

  Cost forecasting: PostHog Boost is flat $250/mo; Mixpanel Growth is $0.28/1K events past 1M free. Estimate your event volume at 6 and 12 months out; compute the Mixpanel monthly cost at each checkpoint. The migration cost-saves only at low volume; verify the math holds at projected scale.

Compare on price across the category

This guide is PostHog to Mixpanel specifically. To see both side by side with every other analytics tool we track on a single price-only table, see the analytics pricing comparison . Useful before committing to the migration, in case a third option fits the cost-and-feature combination better than either side of this guide.

Common questions

Is Mixpanel cheaper than PostHog?

Both start at the same headline price (Free). The reason to migrate is the pricing model and feature scope, not the entry-tier number.

Will my data transfer cleanly?

Most analytics data transfers, but rarely 1:1. The "Pair-specific gotchas" section above is hand-curated for this exact migration: it covers what exports from PostHog, how it imports into Mixpanel, and which structural pieces (workflows, integrations, custom domains) require rebuild rather than direct port. The constraint usually isn't the data export; it's the rebuild work for anything Mixpanel models differently.

How long does the migration take?

A clean migration for this pair is typically 1-2 weeks of focused work: data export, integration reconnection (CRMs, webhooks, payment processors), feature rebuild for whatever doesn't port directly, test run, cutover. The constraint is rarely the export itself; it's the integration reconnection and the rebuild work for any feature that Mixpanel models differently from PostHog.

Are PostHog and Mixpanel direct competitors?

Yes. Both are primarily analytics tools, which is why this is a defensible head-to-head migration rather than a cross-category consolidation.

Where can I see PostHog vs Mixpanel side-by-side?

The /compare/mixpanel-vs-posthog page on TierGauge shows side-by-side plans, headline pricing, included features, and limit comparison at the entry paid tier. This migration guide is the long-form decision narrative; the compare page is the data-only dashboard.