Archive one customer-managed tag. Archiving prevents new assignments but preserves existing subscriber assignments and can be reversed by restoring the tag. Use the tag-usage tool first to inspect archive blockers.

Return the current number of subscribers matching one stored segment.

Create a subscriber segment from field, tag, or nested-segment conditions.

Create a subscriber without sending an opt-in message, with optional typed field values and tag assignments.

Sequentially create 1-25 subscribers without sending opt-in messages. The batch is non-atomic, returns an outcome for every item, and stops after a systemic or ambiguous failure.

Create a customer-managed tag that can be assigned to subscribers.

Permanently delete exactly one stored subscriber segment identified by an explicit segment ID. This action cannot select segments by filter or bulk criteria.

Permanently delete exactly one subscriber identified by an explicit subscriber ID. This action cannot select subscribers by email, filter, or bulk criteria.

Return an active Maildroppa form's ordered input-field definition for rendering in a trusted website integration.

Return one stored subscriber segment and its complete filter expression by ID.

Return one Maildroppa subscriber by ID, including display field values, tag IDs, status, registration date, and GDPR agreement.

Return subscriber assignments and archive or permanent-delete blockers for one Maildroppa tag.

Return signup form overviews with IDs, type, status, publication state, and public routing details.

Return the account's RSS newsletter configurations without activating, checking, or sending them.

Return sender profiles available to RSS newsletters, including verification and delivery readiness.

Return the account's stored subscriber segments and filter expressions.

Return one page of a subscriber's activity timeline with delivery eligibility and summary counts.

Return built-in and custom subscriber field definitions, optionally including archived custom fields.

Return one page of subscribers, optionally filtered by free text, status, or structured segment conditions. Pass next_cursor back as cursor to continue.

Return account tags, optionally including archived tags.

Restore an archived customer-managed Maildroppa tag so it can be assigned to subscribers again.

Replace a segment's name and complete filter expression. This is a full replacement, so supply every condition group that should remain.

Rename an existing customer-managed tag.