The answer to this depends on who you want to target and what the Direct mail is.
We often say that if you want to send a traditional/ formal mailing, we suggest a letter in an envelope. This can be single-sided or double-sided. You can have your logo on the envelope if required.
Receiving a letter that is addressed to you personally usually suggests that it is essential information inside.
By law, we always have to have a return address on the envelope. This can be your address or our mailing address.
Postcard mailings are more to the point where you could use pictures, logos and colour to attract people’s attention.
We now opt to cover brochures or catalogues in compostable poly rather than an envelope as it looks more modern. Unlike an envelope you can see through, it is recyclable and cost-effective.