I have to concur with my counterpart. I offer same-day handling, which can be a little bit stressful at times because it means I have to get something delivered to my postal franchise office by no later than nine o'clock that night. I do strive to get it there by 5:00 p.m. so that it can make its way into the postal system that day and shave off an extra day from the delivery estimate.
For the items that I ship via Expedited Parcel, which would be 90% of my things, I think my customers would notice a delay if parcel delivery went to alternating days, because honestly one of the my strengths, again, as a Canadian eBay seller, with the toys that I offer and the selection that I offer and my target audience, is that I'm in Canada. I might not be less expensive, because I can't compete on price, but I can definitely get things to my customers faster than my American counterparts ever could dream of doing because their products have to cross a border.
For me, offering same day and then Expedited Parcel, if not Xpresspost, and having my customers able to get that merchandise within three or four days is really important. In the case of domestic Lettermail, something that goes into the mailbox, for me that would be something that ships in an oversize envelope, and I don't think that my customers would really care too much if it were alternating day delivery. I know as a consumer that wouldn't bother me too much. It's the parcels that are very time-sensitive. I know it's all paid merchandise, but if it comes by Lettermail, to me it's a different kind of mental expectation that goes into it.