> For the complete documentation index, see [llms.txt](https://docs.emaillabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaillabs.io/en/email/introduction/how-to-use-email-campaigns-vs-api-sends.md).

# How to Use Email Campaigns vs API Sends

The choice of the appropriate sending mechanism depends on the purpose and nature of the communication.

**Email Campaigns – Best for:**

* Mass marketing mailings (e.g., newsletters, promotional offers).
* Regular communication with customers (e.g., monthly summaries, branding messages).
* Promotional and informational campaigns with a wide reach.
* Mailings that require scheduling and advance planning.
* Creating attractive messages using the built-in drag-and-drop creator with access to over 250 ready-made templates.
* Implementing campaigns to contact groups saved in the panel, which allows for effective collaboration between different team members – one person can segment or import new contacts, and another can prepare the email design.

**Email API – Best for:**

* Automatic transactional notifications (e.g., order confirmations, password resets, invoices).
* Messages requiring high responsiveness and immediate delivery.
* Individual, dynamic communication tailored to user actions in real-time.
* Mailings integrated with CRM, ERP, or other applications.