That's great that you got such wonderful results with your email! Congratulations! Here are a few tips:
If you are sending the same email to multiple lists, you can do it all at once by selecting the different lists you want to send to. You do not need to send a new email to each list, so that's a time saver for you!
Here's a really helpful article for dealing with bounces. I always look at each Recommended for Removal type individually, and see if I can spot any obvious typos in the Non-Existent or Undeliverable categories (like gamil.com, or yahoo.con, etc) and just edit the address from the bounce list. I then go through and clean up the Suspended emails. If I am dealing with a large amount of bounces, I might do this over time instead of all at once. Once I clean up my list, I can then resend the email to anyone "new" added to the list like this.
Over time, this will all get a lot easier, so just focus on getting your lists cleaned up, and then you may want to do some advanced segmentation.
But it sounds like what you are offering is really relevant to your audience, so keep up the great work. You will refine things as you go, so don't worry about getting fancy from the get-go. You can ramp things up over time. Focus on sending great content, and keeping your list clean, and it will all come together as you get more familiar with the platform. Please let me know if you need more help!
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