API call limits in Salesforce when syncing Marketing Metrics from MailChimp

Subscriber:

If I have 35,000 new contacts in Salesforce that are not in MailChimp, should I expect 35k API calls for the initial sync?

Cazoomi:

Not at all. Only 70 API calls are needed to Salesforce (500 records per-call)

Subscriber:

After that, I’m assuming the emails are cached and the stated 200/500 records per API call takes effect?

Cazoomi:

Yes, that is correct.

Subscriber:

If I add another 5,000 contacts in addition to the existing 35k that have already been sync’d, should I expect another 5k API calls to have the new contacts sync’d?

Cazoomi:

No. As in the above calculation only 10 API calls would be needed.

Subscriber:

If my entire database is sync’d and nothing changes (no new campaigns, responses, etc), how many API calls should I expect when I run a sync?

Cazoomi:

Only 1 API call will be needed in this use case.

Please note that the above API calls are for getting contacts/lists only.  We also need a few API calls to retrieve fields details.  We also need 1 API call for each unsubscribed members in MailChimp to update opt-out status in Salesforce.

Please also note that the above use case is applicable for one way sync as you specified (Do not sync new contacts is checked).

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*Number of API calls required for the MailChimp to Salesforce Sync?

If you don't check that option the API calls needed would be added up based on the following:

* Number of email addresses in MailChimp that are not cached yet  x 2 (search in Leads and Contacts) 
* API calls to create records in Salesforce if email does not exist.

 

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