Best email scraper at high volumes

I’m looking for a tool that lets me scrape enough emails to send out from around 30 inboxes. something that can handle serious volume without breaking.

Here’s what I’m after:

• Collecting big lists (thousands per week) but with good accuracy
• Built-in verification or easily pairable with a verifier
• Doesn’t cost an arm and a leg when done across 30 inboxes

If you’ve used one that works… or tried something that didn’t and want to save someone the time please share. I currently use apollo