> It’s important to clarify at first: I’ve personally typed and carefully went through every single email I sent

I think if this is true then it's really not spamming. At least if someone was to do proper research and mail me without being too salesy (e.g. not including a link) then I would be okay with it.

Spamming is more like mailing a hundred people without trying to communicate just trying to make people click a link.