Required and optional contact fields
Which contact fields in Nexcal are required and which are optional, and how they are mapped during import.
Last reviewed: 2026-07-22
Required and optional contact fields
A contact in Nexcal consists of several fields. Some are required for a contact to be callable at all, others are optional and provide additional context for the conversation and the analysis.
Required details
The central required detail is a valid phone number in international format. Without a callable number, a contact cannot be processed as a lead. Depending on how your workspace is configured, further fields may be defined as required, for example a name for a personal greeting.
Optional details
Optional fields extend the contact profile and can be useful in the conversation or the analysis, for example:
- first and last name;
- company or organization;
- email address;
- additional attributes or custom fields.
Which fields make sense depends on your campaign. A name helps with a personal greeting; an email address can be relevant for an appointment confirmation.
Hinweis: Only collect data that you have a basis to process. Nexcal does not make a legal assessment of your data.
Mapping fields during import
During the CSV import you map the columns of your file to the contact fields. Required fields must be mapped to a column, otherwise the affected rows are flagged. See column mapping during import for more.
Common questions
Which detail is strictly required?
A valid phone number in international format is mandatory. Without a callable number, a contact cannot be processed as a lead.
What are optional fields useful for in a conversation?
Optional fields provide additional context. A name allows a personal greeting, a company name can help with categorization. Which fields make sense depends on the goal of your campaign.
Can I use my own custom fields?
Additional attributes can be captured as custom fields and mapped during import. Only collect data that you have a basis to process.