Hi, i've to build a simple newsletter system for a client and for the begin he will have something like 5-6000 contacts (that's how much has now) and probably he will get to 25-30000 contacts until the end of the year. Searching on google i found that ar_mailer is good for newsletter systems. But i didn't find how many contacts would manage without problems. My fear is that include so many contacts in a table would take quite a lot (it's not a problem if them are delivered during some days, but the time to include them in the queue should/must be very low (=seconds)). What do you think? Anyone has experience with ar_mailer (or something else) and many contacts to manage?