To be listed on the Swiftex a coin should satisfy several requirements
1. Bitcointalk announcement page with some activity.
2. Link to https://swiftex.co should be in the Announce post on the bitcointalk.
3. Communication for any wallet updates
4. Listing Fee.
Coin can be delisted if:
* Consumes a lot of server resources and can't be fixed
* Unstable wallet or unstable blockchain (multiple chains / stopped blocks)
* Coin which turns to be scam will be delisted instantly