Best emojis for cta📢📣🔲

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loudspeaker
bullhorn, announcement, alert, public address, speaker, loud, noisy, campaign, notice, calling all, shout out, news, public relations (PR), broadcast, marketing, advertise, ads, update, call to action (CTA), awareness, reach, promote, promotion, introduction, refer
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megaphone
bullhorn, announcement, alert, public address, speaker, loud, noisy, cheering, campaign, notice, calling all, shout out, news, public relations (PR), broadcast, marketing, advertise, ads, update, call to action (CTA), awareness, reach, promote, promotion, introduction, refer
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black square button
input, checkbox, ui, selection, choice, option, tile, call to action (CTA)