Introduction of new sales representative to customer / client to service the account.
We would like to introduce you to [Name]. [Name] replaces [Ex Sales Rep] as the [position] of [Customer Service]. [[Name] will be the principal representative in serving your account.]
[Name] has [number] years of experience in this industry. [He/she] previously worked as [previous position] at [previous company], and as [previous position] at [previous company] … [include other work experience etc.]