I could but I don't want to, it's even more of a dark pattern and looks way too "spammish" IMO. I don't want my users to find this in their email and think that I'm trying to trick their system. Also I wouldn't be suprised if some antispam tries to detect this as a spam criteria.
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Couldn’t you add some “hidden” text instead, e.g. white on white or display:none?
I could but I don't want to, it's even more of a dark pattern and looks way too "spammish" IMO. I don't want my users to find this in their email and think that I'm trying to trick their system. Also I wouldn't be suprised if some antispam tries to detect this as a spam criteria.