Does paper thickness affect postcard advertising effectiveness?

Yes. Paper thickness shapes how recipients judge and keep your postcard, which feeds directly into how well the mailer performs.

• Thicker stocks (16pt and above) read as higher quality the moment they are picked up.
• Sturdy cards get held onto longer and thrown away less quickly.
• Ultra-thick options up to 32pt feel substantial in hand and signal that your business invests in quality.

That tactile impression is part of the message. A heavier card tells recipients you took the mailer seriously, which supports its advertising effect.