Save the dates

Have you checked Etsy. They did my invitations with addressed envelopes..

Minted.com!!!! I used minted for everything! I even have a wedding website through them! All you have to do is add in your guests addresses and it saves it for everything! Prints out all the envelopes with your addresses and also does return address labels, or printed watermark return address on envelope. They also have other options like wax seals etc.!

And they also ship out pretty quickly. I got mine within a week

Etsy.com has several vendors that will do this

Minted! They do free envelope addressing too which is such a bonus

We used VistaPrint to print our save the dates then realized we wanted custom envelopes so we were able to find them on Basic Invite. Had I thought if custom envelopes before I would have gotten the custom save the dates through them as well. They are super easy to use.

100% recommend Minted!

Their invites are VERY customizable, and on most you can even request the designer to make changes. They have tons of options for personalized envelopes as well, and you can even pick a color for the envelope! The address assistant is also very helpful because it keeps all of your guest addresses and automatically prints it on the envelope for you.

Basicinvite.com is where I got mine. I love that I can change any color I want.