Hi Sean Tierney This may depend a bit on what your database demographics look like, but for larger batch sends I usually split sends into smaller segmented campaigns, as John Clark suggested above. Geo works well for this, as you'll ideally want to send email to people within a certain time range during the day (morning, early morning, mid-afternoon, whatever) anyway. For our database this typically means four groups - North America, EMEA, APAC, and ROW, which acts as a catchall "everyone else" group. We see more open activity in NAM later in the morning (9am - noon) while EMEA geo tends to open more emails either early (8-10am) or in mid-afternoon (2-5pm). Depending on your specific case there are a few other things to think about: Validate your older email addresses. Especially if some of these leads are on the older side (6+ months to a year or more), definitely consider doing a Datavalidation (or similar) scan to identify any invalid emails or spam traps. Helps with deliverability, and helps speed things along a bit by letting you pull the dead addresses out of the campaign before it starts. Filter any generic addresses. I recommend excluding info@company.com , admin@company.com , support@company.com , etc.  They tend to be either lists with multiple recipients and many feed directly to a company system (e.g. support@company.com automatically creating a Zendesk ticket).  For smaller batches or triggered campaigns it's not really an issue, but in larger batch sends having a lot of these around can actually hit your overall performance pretty hard. Do a smallish subject line test. If you're really going to send the same email to everyone, you can random sample 5-10% of the recipient pool and test 2 versions of your subject line, then use whichever version performed better for the remaining 90-95% of recipients.  The fun part of big batch sends is that they're GREAT for testing performance of 2 or more variations of an email. ... View more

It looks like you have to add a smart camapign and do it the old way. Kinda lame that they haven't built in a functionality for re-sends. I would recomend that you don't just re-send the same exact email. We at least change the subject line because if someone didn't open it the first ttime because the subject line wasn't compelling they won't open it the second time either. it could also seem spammy to recieve the same exact email twice. ... View more