Question : How Many Fields Do You Have for Each Contact?

Each contact in Mailpro starts with a small set of standard fields (email, first name, last name, mobile, city) and supports up to 30 custom fields you define. That gives every contact up to 35 individual data points — far more than you typically need, and enough to support sophisticated personalization, segmentation and automation.

The standard fields (always present)

Custom fields (up to 30)

You define them in Lists → Field manager. Each custom field has a name, a type (text, date, number, boolean) and a default value. Once created, the field exists for every contact and every form — you fill in the value per contact via UI, import or API.

Why the 30-field limit

Two practical reasons: 1) more than 30 fields per contact is almost always a sign of structured data that should live in your CRM, not your email tool. 2) Indexing 30 fields keeps segmentation and lookups fast even on million-contact lists. If you genuinely need more, the tags system gives you unlimited additional labels per contact — and is often what people actually want when they ask for «more fields». See contact tags.

Field count vs contact count

The 30-custom-field limit is per account, not per contact — meaning all 30 fields exist on all your contacts, even if only some have values. There’s no extra storage cost for empty fields. Contact-count limits are governed by your plan, separately.