When you send to any inbox @mailsac.com, if a + plus symbol is included, we remove that symbol and everything after it.
jeff+12345asdf@mailsac.comwill be delivered to
jeff@mailsac.comMany email services including Gmail, iCloud and Fastmail support stripping the + plus symbol and everything after it in the local-part of the address (everything before the @ symbol).
Plus-addressing has long been a useful feature to segment user accounts across services. At Mailsac we offer a variety of disposable email and forwarding utilities that are designed for software QA engineers and developers. Things like forwarding all messages in a domain to a single address, or automatically routing email to webhooks or slack, are really easy – may not even require DNS setup.