title: Is there an email server that will let me dynamically change the local-part of my address when sending emails
body: <p>I'm currently using privateemail to manage emails at MyDomain.com, and I have a catch-all so I can register for accounts with YourCompany@MyDomain.com. But I can't send emails from YourCompany@MyDomain.com.</p>
  <p>Are there any email providers that will let me change the local-part of the address for each email I send, but keep all my emails in a single mailbox?</p>