Format
- Memos: Typically use a standardized format with a header including "To," "From," "Date," and "Subject" lines. They are often printed on pre-printed memo paper or created using a memo template.
- Letters: Can vary in format depending on the purpose and sender's style. They usually include a salutation (e.g., "Dear Mr./Ms. LastName"), date, address of both sender and recipient, subject line, body, and a closing (e.g., "Sincerely,").
Purpose
- Memos: Used for internal communication within an organization to convey information, give instructions, announce decisions, or request action.
- Letters: Can be used for various purposes, including external communication with clients, customers, suppliers, or other organizations. They can be used to convey formal requests, inquiries, thank notes, sales pitches, or announcements.
Audience
- Memos: Typically targeted to a specific group or individual within an organization who needs to be informed or take action.
- Letters: Can be addressed to both internal and external audiences, including individuals or groups.
Length and Detail
- Memos: Can vary in length but are often short and to the point, providing only essential information.
- Letters: Can be more comprehensive and detailed, depending on the purpose and audience.
Confidentiality
- Memos: May or may not be confidential, depending on the organization's policies and the nature of the information being conveyed.
- Letters: Can be confidential if the sender marks them as such, especially if they contain sensitive or private information.
Distribution
- Memos: Can be distributed using both paper and electronic means within the organization.
- Letters: Sent via postal mail, email, or other electronic channels to the intended recipient(s) outside the organization.
Response
- Memos: May require a response or follow-up action, depending on the purpose.
- Letters: Depending on the purpose, letters may or may not elicit a specific response.