Here are the different types of letter envelopes that are currently offered by Lob:
Standard #10 outer envelope:
For letter & check orders not exceeding 6 total tri-folded pages
Standard 9 x 12” flat outer envelope:
For letter & check orders above 6 pages but not exceeding 60 pages in total
Custom standard #10 outer envelope:
- For customers who want to customize their standard #10 envelopes with custom design or artwork
- For letter orders not exceeding 6 total tri-folded pages; checks or postcards are currently not supported
- Customers are required to order custom envelopes in advance of their use and manage their inventory in the Lob dashboard
Enterprise-only feature; see our guides for more information
Standard #9 return envelope:
- For customers who want to include a plain #9 envelope for return mail
- See guides for more information
Custom #9 return envelope:
- For customers who want to customize their standard #9 return envelopes with custom designs or artwork
- This includes Business Reply Envelopes
- Enterprise-only feature; reach out to our Sales team or your Customer Success Manager for more details
For more details, see our envelopes product spec page or implementation guides.