# X-ME-VSCategory

`X-ME-VSCategory` is a Fastmail (//Messaging Engine//) proprietary header which can be used in filters to automatically categorise incoming messages.

It appears to be added to messages received after `20 March 2018`, but is only documented by Fastmail as "a category as determined by our content filter." (The email delivery process § [What headers are added by Fastmail?](https://www.fastmail.help/hc/en-us/articles/1500000278262-The-email-delivery-process#h_01H9X2QNRFRE534JC6EWN3GC41))

## Known Values
^ X-ME-VSCategory          ^
| clean                    |
| commercial:mce           |
| transactional:account    |
| transactional:alerts     |
| transactional:purchases  |
| transactional:travel     |
| phishing                 |

### greetz
* `transactional:travel` noted by [@faisal@social.lol](https://social.lol/@faisal/111659393335158273)