To Whom It May Concern
This letter hereby certifies that Mr. / Ms. (name of the employee) has served at (name of the organization) as a marketing executive or (whatever post you held), from (date of joining the company) to (date of leaving the company).
During his/ her tenure he/ she demonstrated superb marketing knowledge and expertise and because of his/ her marketing skills our company has successfully completed many targets. During this time, (name of the employee) has carried out all his/ her duties in a professional and sincere manner. He/ she has not only assisted in marketing activities but has also made many efforts for training the junior marketing staff and keeping pace with latest marketing needs. His/ her sincere approach towards work and his/ her friendly personality has set a high example among other staff.
We wish that he/ she succeeds in all his/ her future endeavours.
Regards