Not getting verification mail

[CouchersBot]

Subject: Not getting verification mail
Description:
I tried to sign up. User name (1st try) Lucasito and (2nd try) Lucasito2.

Results:
I filled the sign-up form, apparently everythings works fine, but I don't get the verification mail. But the data are in your system, because if I try to sign up again with the same user name I get the error message that the user name is taken.

Backend version: develop-0023fa73
Frontend version:
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:108.0) Gecko/20100101 Firefox/108.0
Page: https://couchers.org/signup
User:

[aapeliv]

dupe #3520