sending speed

[frm.mwz]

@twisted1919
Assuming an email with text and html part of total no more than 5-10k (pics in cloud)
and a few (tracking) links in it, how much would it slow down sending if each email had the following added at the bottom:
subscriber email address
subscriber IP
subscription website/link to signup form
date/time of subscription?

Are there any other things to consider re sending speed?

 

[twisted1919]

@frm.mwz - The data related to the subscriber, like ip/date custom fields will not slow down in any way since they are preloaded(and cached) anyway