…-digit time components.
In my simple testing, it increases the throughput of receiving large emails by between 33 and 50%.
…ck to the caller
This allows you to generate the message body right before its sent after the DATA command, so you can do something like a mail merge on-demand rather than pre-allocating a bunch of memory up-front for each recipient. Also, the smtp client specs have been updated to note that the smtp client takes binaries and now the new option of the message body being a fun.