A
It's an email where you send offers to customers.
Sales Letter
It's an email where you apply for a job.
Job Application
It's an email where you respond to a complaint.
Adjustment Letter
It's an email where you request payment for an outstanding invoice
Collection Letter
It's an email where you send a formal offer outlining the price and terms for a service or product.
Quotation Letter
Is it an email where you request compensation for a product or service issue, hoping for a positive resolution
Claim Letter
A formal written request for information or clarification on a particular subject.
Enquiry Letter