To qualify for special automation mailing rates, you'll need to comply with new U.S. Postal Service regulations. For items mailed without envelopes, the maximum weight is still three ounces, but the recommended length has been reduced to a maximum final trim size of 9". For mailings that are between 5" and 9" long, cover stock must be at least 50 pounds.
Most mailed pieces need to be closed with three 1½" Wafer Seals. Staples and mailing tabs with perforation aren't permitted.
Wafer Seals must be tight against the edge of the mailing, with a recommended maximum overhang of 1/16". Seals may not interfere with readability in the barcode "clear zone" and must accept water-based ink if the barcode isn't preprinted.
The USPS classifies most church newsletters as booklets. As indicated in the diagram below, the fold should go along the bottom, with three Wafer Seals securing the mailing.
Place two Wafer Seals on the leading (right) edge and one Wafer Seal on the trailing (left) edge. Position upper Wafer Seals 1" from the top edge and the lower Wafer Seal ½" from the bottom edge.
Self-mailers (single folded sheets of 8½" x 11" paper sent without envelopes) should be folded along the bottom, as well. Place one Wafer Seal along the open edge, in the middle.