Can send emails from shell but allauth emails are not sent

[lindemann-co]

Preamble: allauth works fine on my local dev instance. The issue only happens once deployed on my cloud infra.

Once deployed, I can still send emails from manage.py shell but when interacting with the website, allauth emails are never sent.

I can see the dummy users I create and their (unverified) emails in the admin but I never receive the verification emails.

Does anyone have any idea what is going on or where to start debugging?
I am willing to investigate and try to fix the bug myself, as I understand it's probably impossible to reproduce this behaviour out of the blue. I would appreciate some guidance though, as I have no experience with allauth or Django mail.

Note 1: I also asked for help on Django forum.

Note 2: My issue seems a modern duplicate of this one raised in 2017 in Allauth Google Group, with more recent versions (python 3.11 and Django 4.2)

[lindemann-co]

I decided to go with Gmail, since it’s presented as the universal solution everywhere I saw a report of this issue.

It works. It’s a bit sad to be “forced” into a provider because of a bug, though.