Of course I’m so sorry you feel this way; bad taste.
As I don’t know what exactly they wrote, I can’t talk about this individual case, but in general, something to think about:
Maybe the sender didn’t read your profile, or they read it only until where you tell you are not picky? And they thought it’s true, and so they send what tells most of who they are, their life and views etc.
And whatever the case, like you wrote, it was politely worded. I don’t think it’s very “forcing” religion to you then, hopefully. Right?
When you joined, you have accepted you can’t make demands. Just like you, they can send whatever card they like. So, even religious.
You wrote card in envelope is ok, they did do that, and like it’s ok to include something, they did that too. ( “If you want, you can also send other things with your postcard (for instance, a letter, photo or pamphlet” from Postcrossing F.A.Q.).
(Edit, removed misunderstood part) You can hope not religious, but still it’s good to treat every card like they did not read your profile at all. (Because there are members who don’t know English or just don’t read the profile.)
The part in your profile where you threaten members with legal actions does sound to me like very unneeded part. If someone starts to spam you, you don’t have to give them warning. And for what I experienced here, it’s really not needed to have such in profile. It does make your profile a little hostile. or perhaps even like a little threatening, that you should be sent what you like (and nothing else). I know you can’t say so, but others might take it more serious.
Maybe take a little time to think if this is your hobby. The major countries at the moment (Germany and USA) are both countries with many religious members. You need to stay respectful towards them too, even when they don’t read your profile and send something you don’t like.
But: the reporting is correct thing to do. Probably you don’t need to register it, as they have a habit of understanding this style of feeling hurt.
There has been earlier, where a member was suspended (?) when they only send religious leaflets if I remember correct. (That is not ok. Every envelope should have the postcard.) But as you got the postcard and it was polite, then it’s ok. (But of course I don’t know what was written, like I wrote.)
What’s wrong with that?
Even the “what should I write on a postcard” -part tells this:
- Did you ever travel to the place where your card is going? Recall your best memory of that place.
So, there’s nothing wrong with telling such thing.