host.oast.fun not working like host@oast.fun but in burp collabarator it is working

[balook]

visit https://app.interactsh.com/#/

you will be having a host
example host.oast.fun

try sending email to host@oast.fun but you dont receive any smtp
but if you try samething in burpsuite it will be working fine

[Mzack9999]

The email domain should be the payload generated by interactsh-client, for example:

$ interactsh-client

    _       __                       __       __
   (_)___  / /____  _________ ______/ /______/ /_
  / / __ \/ __/ _ \/ ___/ __ '/ ___/ __/ ___/ __ \
 / / / / / /_/  __/ /  / /_/ / /__/ /_(__  ) / / /
/_/_/ /_/\__/\___/_/   \__,_/\___/\__/____/_/ /_/

                projectdiscovery.io

[INF] Current interactsh version 1.2.0 (latest)
[INF] Listing 1 payload for OOB Testing
[INF] cr87dhmltlrqck7gd9t0www49qass1d1z.oast.me

The target email is xxxx@cr87dhmltlrqck7gd9t0www49qass1d1z.oast.me with xxx any value that you want

[balook]

If it generated xyz.oast.me I should use it as xyz@oast.me ... Not xxxx@xyz.oast.me

[balook]

With burp collab u can use like as I said

[Mzack9999]

The email length would be the same anyway, plus in this way you can use the username part to further customize the taint or exfiltrate info such as environment variables (depending on your target)