jean-o-matic

this is how i write straight on envelopes.
cut off the top part of the top of a file folder
insert envelope
write just above the edge
when you get to a letter with a descender or *tail* just skip the tail
after you complete the line, pull the envelope up and add the tails to f,g,j,p,q,y and sometimes z

you can make marks on the file folder at the top of the envelope
to keep the level of the starting line consistent.