ChangeSender Features

Automatic Sender Selection: Automatically selects the right sender address when replying to emails, using the original recipient's address.
Send-As Selection Box: Easy selection of sender addresses for new emails via a “send as” selection box in Outlook.
Dynamic Email Signatures: Email signatures change automatically according to the selected sender address.
Sent Items Folder Management: Choose to have sent emails moved to specific Sent-items folders matching the chosen address, or keep them in the normal sent-items folder.
Keyboard Shortcuts: CTRL-1, CTRL-2, etc. for quick address selection.
Multiple Users, Single Address: Multiple users can send from the same sender address (e.g. sales@company.com) without having to use a fixed name string.
Configurable Sender Appearance: Fully configurable as “Any name” <any@address.com> for each individual email address. Does not show up as “sent on behalf of…”
Simple Installation: No need to juggle additional email accounts or groups.
Administrative Controls: Administrator can restrict or allow user choices for sender addresses.
Third-Party App Support: Also works when emailing from third-party applications and Windows ‘Send to’.

Not sure whether you need Send As, Send on Behalf or an alias? The guide Send As vs Send on Behalf vs sending from an alias defines the three and shows where an add-in comes in.

Compatibility

Exchange 2016, 2013, 2010, 2007, 2003, 2000 and Outlook 2016, 2013, 2010, 2007.