Private And Confidential Stamps

Keep sensitive mail marked. Private and Confidential stamps for envelopes and files that should only be opened by the right person.

  • Designs: Private and Confidential layouts, including Private – Open By Addressee Only styles
  • Who they're for: offices, HR, solicitors and anyone handling confidential post
  • Sizes: self-inking COLOP stamps in common office sizes
  • Same-day dispatch: order before 2pm Monday to Friday. Made in Blackburn. Related: Post Room stamps.

Stamp Ninja range

Private And Confidential Stamps

Keep sensitive mail marked. Private and Confidential stamps for envelopes and files that should only be opened by the right person.

  • Designs: Private and Confidential layouts, including Private – Open By Addressee Only styles
  • Who they're for: offices, HR, solicitors and anyone handling confidential post
  • Sizes: self-inking COLOP stamps in common office sizes
  • Same-day dispatch: order before 2pm Monday to Friday. Made in Blackburn. Related: Post Room stamps.
100,000+ stamps producedEstablished stamp makers, working from Blackburn since 2017.
Order before 2pm for same-day dispatchMonday to Friday, eligible orders normally leave the same working day. Free UK delivery over £15.
Need help choosing?Visit the Stamp Advice Centre for size, ink and stamp-type guides.