Which of the following is true regarding email templates?

Email templates are designed to facilitate the creation of messages that can be sent to a large number of recipients, making them particularly suitable for bulk email campaigns. This allows users to maintain consistency in branding and messaging while saving time on formatting each individual email.

When using email templates for bulk sending, users can customize the content within the template to align with specific customer segments or messaging strategies, thereby enhancing engagement. The design of templates typically ensures that they can accommodate various content types, including text, images, and calls to action—allowing for a rich user experience.

The other options suggest limitations that do not reflect the true versatility of email templates. For instance, they can indeed be customized to suit different contexts or audiences and are not restricted to one-time sends. Furthermore, while images can enhance the visual appeal of emails, they are not a mandatory requirement for email templates.