Photo by K. Robinson Photography
According to the knot.com: Determining the appropriate way to address your wedding invitation envelopes can be a tricky process. As a rule of thumb, the outer envelope of your wedding invitation should be more formal, with titles and full names, while the inner envelope is more informal, leaving out first names or titles and last names (if you're very close to the guest). And post office hints: avoid big holiday shipping times like Christmas and Mother’s Day week and the other big mailing days like income tax deadlines!! Wedding invites usually require more postage than a normal letter so take one or two in to get weighed and buy the appropriate stamps!