Migrate from Apollo to Clay Without Losing Your Sequences or Contact Data

The trigger I see most often is a renewal quote. A team has been living inside Apollo for 12 to 18 months, sequences are humming, the contact database has grown to 15,000+ records, and then the renewal lands at 2x the original price. Someone opens a Clay demo tab and 45 minutes later they are asking me how hard the switch actually is. The honest answer: it is not painful if you do it in order, and it is a disaster if you do not. This guide covers exactly that order.

Before you migrate

Do not open a Clay workspace and start importing until you have completed this checklist. I have watched teams skip the pre-work and spend two weeks untangling duplicate contacts and missing reply data. The sequence is everything here.

• Export every contact list from Apollo. Go to People, filter by each saved list or sequence, and export as CSV. Do this for every segment, not just active sequences. Apollo’s CSV export docs walk through the field selection. Choose all fields, especially last_activity_date, email_status, and any custom fields your team has populated.
• Screenshot or document every active sequence. Record step number, wait days, subject line, and body text for every step. Apollo gives you no structured export for sequence logic, only the contact membership list.
• Sync your CRM before you leave. If you use HubSpot or Salesforce, trigger a full Apollo sync right now and verify that open, click, and reply data is flowing into contact activity timelines. This is your permanent record. Once you deprovision Apollo, the activity feed in Apollo is gone.
• Pause (do not delete) active sequences. Pausing preserves the enrollment data. Deleting it destroys the contact-to-sequence mapping you may need for suppression lists later.
• Pull your suppression list. Export unsubscribes and bounces from Apollo’s Do Not Contact list. You will re-upload this to your sending tool after the migration or you will hit those addresses again.
• Note your billing cycle end date. Apollo credits do not roll over and are non-refundable. Run them down on enrichment exports before your cycle ends.

Migration steps

What breaks and what does not transfer

The biggest surprise for most teams is that Clay is not trying to be Apollo. Apollo is a full-stack outbound platform: database, enrichment, sequencing, and analytics in one UI. Clay is a data infrastructure tool. That distinction matters enormously before you migrate. Understanding it on day one saves a lot of “where is this feature” frustration on day two.

What does not transfer:

• Sequence enrollment history (who was on step 3 of which cadence)
• Open, click, and reply metrics from Apollo’s native analytics
• Apollo’s contact scoring and intent signals (you rebuild these with Clay’s enrichment columns and your own scoring logic in HubSpot or Salesforce)
• Apollo’s dialer and LinkedIn Tasks (if you used these, you need a separate replacement)

What transfers cleanly:

• All contact and account data via CSV export and re-import
• Email addresses, with re-verification on the Clay side
• Company data, refreshed and often improved through Clay’s waterfall
• Suppression lists

My clients consistently underestimate how much of their Apollo setup lived in the sequencer, not the database. Do a full audit of which features you actually use before you assume Clay covers everything.

Fix: before pausing the sequence in Apollo,
pull the Activity export filtered by that
sequence. Cross-reference the last_activity_date
column against each step's send date to infer
which step each contact was on.

Then in your new sending tool, create a
separate campaign for "mid-sequence" contacts
and start them at the inferred step number.

It takes 30 minutes per sequence and it is
the only way to avoid double-touching.

Verify it worked

Before you submit the Apollo cancellation, run these four checks. I treat these as a hard gate, not a nice-to-have.

1. HubSpot contact sync fidelity. Pull 20 random contacts from your Clay table and search for them in HubSpot. Confirm that all custom properties mapped correctly and that no duplicates were created.
2. Suppression list active. Send a test campaign in your sending tool to a throwaway address that is also on your suppression list. It should not receive the email.
3. Bounce rate baseline. After your first Clay-enriched send of at least 200 contacts, bounce rate should be under 2%. If it is higher, your enrichment waterfall is not resolving emails cleanly and you need to add a verification step. The cold email deliverability monitoring workflow using Smartlead covers how to set that up.
4. HubSpot deal pipeline untouched. Open HubSpot’s deal view and confirm that no existing deals were orphaned or had their associated contacts duplicated during the sync.

Who should switch and who should stay

Most teams frame this as a binary choice. It is not. The real question is whether your outbound motion has outgrown Apollo’s data layer.

Apollo vs Clay: which direction is right for your team

Choose Stay on Apollo if

• Your team lives inside one tool and hates context switching between a data platform and a sender
• You rely heavily on Apollo's intent data and buying signals and have not evaluated alternatives
• You have fewer than 2,000 contacts in active sequences and enrichment quality has not been a blocker

From $49/user/month Try Apollo →

Choose Migrate to Clay if

• You are paying for Apollo enrichment credits and regularly hitting quality issues on email accuracy
• You want to plug in multiple data providers (Clearbit, Prospeo, LinkedIn, Findymail) and only pay per successful result
• Your outbound motion is getting more complex with AI personalization, waterfall logic, or signal-based triggers that Apollo's native tooling cannot support

From $149/month Try Clay →

If you are running a signal-based outbound motion, pulling job change data, funding signals, or website visitor intent into your sequences, Clay is the better infrastructure layer. I have yet to find a client where Apollo’s native enrichment kept up with a well-tuned Clay waterfall on contact data quality. Apollo is still a solid entry-level outbound platform for smaller teams who want everything in one place and are not yet hitting the data quality ceiling.

For teams that need a sequencer alongside Clay, I currently recommend Smartlead for volume-focused cold email and Outreach for enterprise AE-driven sequences. If you are already in HubSpot deeply, their Sequences product works as the sender if you push Clay-enriched contacts there via the native integration or through n8n for more custom routing.

The migration from Apollo to Clay is worth the effort for teams doing any volume of signal-based or AI-personalized outbound. The setup cost is real but front-loaded. Once your waterfall is dialed in, you are pulling cleaner data at lower cost per verified contact than Apollo’s credit model allows. Do the pre-work, rebuild your suppression list first, and do not cancel Apollo until parallel testing gives you a green light.