set tellme mailto <email-addr> By email. (Secure nicks only.)
and also when to consider them delivered:
set tellme unreliable Tell you once, then forget.
- set tellme pester <interval> Remind until you say !delmsg.
+ set tellme pester <interval> Remind until you say !delmsg
set tellme reliable <interval> Like pester, but identify req'd.
set tellme remind <every-!interval> [<within-interval>]
Remind until you talk on channel within <within-interval>