Envelopes

I would like some envelopes.

Where can I buy envelopes?

I need envelopes.

I need help putting stamps on these envelopes.

I need to put stamps on all these envelopes.

Envelopes are inserted through the slot.

There were several envelopes lying around.

Do you have any envelopes?

The envelopes were the same light-blue color.

I bought three boxes of envelopes.