ing the right ways to sign a letter on behalf of someone else is an essential business communication skill. Whether you’re an executive assistant, office administrator, team member, or colleague signing for a manager, using the correct wording helps maintain professionalism and avoids confusion.
People often search for alternatives because different situations require different levels of formality. A signature for a legal document differs from one used in a friendly internal email. Choosing the right phrase also demonstrates proper email etiquette, improves workplace communication, and ensures recipients understand who authorized the message.
This guide explains the meaning of signing on someone else’s behalf, when to use it, and the best professional, formal, and email-ready alternatives with practical examples.
What Does “Sign a Letter on Behalf of Someone Else” Mean?
Signing a letter on behalf of someone else means placing a signature or writing a closing that indicates you are acting with another person’s permission or authority.
Rather than pretending to be the original sender, you clearly communicate that you are signing for them.
Literal Meaning
It means:
- You are authorized to sign.
- The message comes from another person.
- You are acting as their representative.
Tone
The tone is usually:
- Professional
- Respectful
- Transparent
- Official
Purpose
People sign on behalf of others when:
- Someone is unavailable.
- An assistant manages correspondence.
- A department handles routine communications.
- A manager delegates signing authority.
- A business needs efficient document processing.
Emotional Context
Using the proper wording shows:
- Honesty
- Professionalism
- Respect for authority
- Accountability
Example
Instead of:
John Smith
Write:
On behalf of John Smith
Sarah Williams
Or:
pp John Smith
Sarah Williams
When Is It Appropriate to Sign on Someone Else’s Behalf?
Emails
Common when executive assistants send messages for executives.
Example:
Kind regards,
Sarah Williams
On behalf of David Carter
Workplace Communication
Managers often delegate routine approvals.
Example:
Signed on behalf of the Operations Director.
Client Communication
Clients appreciate knowing exactly who prepared and authorized the message.
Example:
On behalf of the Customer Success Team.
Networking
Administrative staff frequently schedule meetings for executives.
Example:
Best regards,
Emma Lee
Executive Assistant to Michael Brown
Customer Service
Support teams often reply for supervisors.
Example:
On behalf of Customer Care
30 Professional Alternatives for Signing on Behalf of Someone Else
Professional Alternatives
1. On behalf of
Tone: Professional
Best Use: Business letters
Example:
On behalf of Sarah Johnson
2. Signed for
Tone: Professional
Best Use: Internal documents
Example:
Signed for James Walker
3. Authorized representative
Tone: Formal
Best Use: Contracts
Example:
Maria Lopez
Authorized Representative
4. Acting on behalf of
Tone: Formal
Best Use: Corporate communication
Example:
Acting on behalf of the CEO
5. For and on behalf of
Tone: Very formal
Best Use: Legal documents
Example:
For and on behalf of ABC Corporation
6. By authorization
Tone: Formal
Best Use: Official approvals
Example:
Signed by authorization
Formal Alternatives
7. By direction of
Tone: Formal
Best Use: Government offices
Example:
By direction of the Director
8. Under delegated authority
Tone: Formal
Best Use: Corporate policies
Example:
Signed under delegated authority
9. As authorized by
Tone: Professional
Best Use: HR letters
Example:
As authorized by the Managing Director
10. On the authority of
Tone: Official
Best Use: Public organizations
Example:
On the authority of the Board
11. Duly authorized
Tone: Formal
Best Use: Legal documents
Example:
Duly Authorized Representative
12. By order of
Tone: Official
Best Use: Institutional communication
Example:
By order of the President
Friendly Alternatives
13. Sent for
Tone: Friendly
Best Use: Internal emails
Example:
Sent for Lisa Brown
14. Writing on behalf of
Tone: Warm
Best Use: Customer emails
Example:
I’m writing on behalf of Michael.
15. Assisting with correspondence for
Tone: Friendly
Best Use: Administrative emails
Example:
Assisting with correspondence for Emily Davis
16. On the team’s behalf
Tone: Friendly
Best Use: Team communication
Example:
On behalf of our Marketing Team
17. Representing
Tone: Professional
Best Use: Business introductions
Example:
Representing GreenTech Solutions
18. Speaking on behalf of
Tone: Friendly
Best Use: Announcements
Example:
Speaking on behalf of our leadership team
Email Alternatives
19. pp (per procurationem)
Tone: Traditional business
Best Use: Formal letters
Example:
pp John Smith
20. For
Tone: Simple
Best Use: Internal documents
Example:
For Jane Wilson
21. Authorized signatory
Tone: Professional
Best Use: Official correspondence
Example:
Authorized Signatory
22. Executive Assistant to
Tone: Professional
Best Use: Executive emails
Example:
Executive Assistant to Mark Davis
23. On behalf of our office
Tone: Friendly
Best Use: General correspondence
Example:
On behalf of our office, thank you.
24. On behalf of the department
Tone: Professional
Best Use: Department emails
Example:
On behalf of the Finance Department
Workplace Alternatives
25. For management
Tone: Professional
Best Use: Internal notices
Example:
For Management
26. On behalf of leadership
Tone: Professional
Best Use: Company announcements
27. Acting as delegate
Tone: Formal
Best Use: Official approvals
28. By delegated authority
Tone: Formal
Best Use: HR documentation
29. Signed with authorization
Tone: Professional
Best Use: Compliance documents
30. Authorized to sign
Tone: Official
Best Use: Business contracts
Quick Comparison Table
| Alternative | Tone | Best Use |
|---|---|---|
| On behalf of | Professional | Emails |
| For and on behalf of | Very Formal | Legal documents |
| pp | Formal | Business letters |
| Acting on behalf of | Formal | Corporate communication |
| Writing on behalf of | Friendly | Customer emails |
| Executive Assistant to | Professional | Executive correspondence |
| Authorized representative | Formal | Contracts |
| Signed for | Professional | Internal documents |
| By direction of | Official | Government |
| Representing | Professional | Networking |
Email Examples
Client
Dear Mr. Harris,
Thank you for your continued partnership.
Kind regards,
Emma Lewis
On behalf of Daniel Carter
Manager
Best regards,
Rachel Green
Executive Assistant to Robert Adams
Colleague
Thanks for your help.
Signed for Lisa Morgan
Customer
Thank you for contacting us.
On behalf of Customer Support
Networking
It was a pleasure connecting.
Writing on behalf of Susan Mitchell
Meeting Follow-Up
Thank you for attending today’s meeting.
On behalf of the Project Team
Common Mistakes
Pretending to Be the Original Sender
Always make it clear you are signing for someone else.
Using Informal Language
Avoid casual phrases in formal business communication.
Choosing the Wrong Level of Formality
Legal documents require more formal wording than routine emails.
Forgetting Authorization
Only sign for someone when you have permission.
Omitting Your Own Name
Include both your name and the person you represent whenever appropriate.
Related Phrases
| Phrase | Meaning | Example |
|---|---|---|
| On behalf of | Representing another person | On behalf of the CEO |
| For and on behalf of | Legal representation | For and on behalf of ABC Ltd. |
| Acting for | Serving temporarily | Acting for the Director |
| Representing | Speaking for | Representing our company |
| By authority of | Official permission | By authority of management |
| Authorized representative | Approved signer | Authorized representative |
| Authorized signatory | Official signer | Authorized signatory |
| Writing for | Sending correspondence | Writing for the team |
| Sent on behalf of | Email delegation | Sent on behalf of Jane |
| By order of | Official instruction | By order of the Board |
| Acting under authority | Delegated responsibility | Acting under authority |
| Executive Assistant to | Administrative representation | Executive Assistant to the CEO |
| Department representative | Speaking for a department | Department representative |
| Team representative | Representing a team | Team representative |
| Official representative | Formal representation | Official representative |
Phrase Comparison
| Phrase | Formality | Best Use |
|---|---|---|
| On behalf of | High | Business emails |
| For and on behalf of | Very High | Contracts |
| pp | High | Traditional letters |
| Writing on behalf of | Medium | Emails |
| Acting on behalf of | High | Corporate communication |
| Representing | Medium | Networking |
| Authorized representative | Very High | Legal documents |
| Signed for | Medium | Internal documents |
Cultural Usage
US English
“On behalf of” is the most common phrase in American business writing. It is widely accepted in corporate emails, client correspondence, and internal communication.
UK English
British English frequently uses both “On behalf of” and the abbreviation pp (per procurationem) in formal letters. While pp remains acceptable, many organizations now prefer writing the phrase in full for clarity.
Corporate Communication
Companies often require employees to indicate delegated authority to maintain transparency and accountability. Standard phrases include “On behalf of,” “Authorized Representative,” and “For and on behalf of.”
Customer Service
Support agents commonly respond using phrases such as “On behalf of our Customer Care Team” or “Writing on behalf of our support department” to reassure customers that the message represents the organization.
Networking
When arranging meetings or introducing executives, assistants typically sign as “Executive Assistant to…” or “On behalf of…” to make their role clear while maintaining professionalism.
Frequently Asked Questions
1. What is the most professional way to sign a letter for someone else?
“On behalf of” is the most widely accepted and professional option for business communication.
2. What does “pp” mean in a signature?
“pp” stands for the Latin phrase per procurationem, meaning the signer has permission to sign for another person.
3. Can I sign someone else’s name?
Only if you have explicit authorization and follow your organization’s policies or legal requirements.
4. Is “For and on behalf of” legally acceptable?
Yes. It is commonly used in contracts, agreements, and corporate legal documents.
5. Should I include my own name?
Yes. Include your own name and, where appropriate, your job title to identify who signed the document.
6. Is “Signed for” appropriate in emails?
Yes, particularly for internal or informal workplace communication. For external emails, “On behalf of” is usually clearer.
7. Which phrase is best for executive assistants?
“On behalf of,” “Executive Assistant to,” or “Writing on behalf of” are all excellent choices depending on the context.
8. Can I use these phrases in customer service emails?
Absolutely. They help customers understand that the response represents the company rather than just an individual employee.
9. What is the difference between “On behalf of” and “Acting on behalf of”?
“On behalf of” is broader and more common. “Acting on behalf of” emphasizes that you are temporarily exercising delegated authority.
10. What is the safest phrase for business emails?
“On behalf of” remains the safest, clearest, and most universally recognized option for professional communication.
Final Summary
Choosing the right way to sign a letter on behalf of someone else helps maintain trust, professionalism, and clarity in every business interaction. While several alternatives exist, “On behalf of” remains the most versatile choice for emails, workplace communication, and client correspondence. For legal or highly formal documents, phrases like “For and on behalf of,” “Authorized Representative,” and “By delegated authority” provide greater formality. Friendly options such as “Writing on behalf of” or “On behalf of our team” work well in customer service and networking. By selecting the appropriate wording for each situation, you demonstrate strong communication skills, follow proper email etiquette, and ensure recipients clearly understand your authority to sign.
