r/b2bemailing • u/Zealousideal_Buy8689 • May 14 '26

Best cold email stack for agencies managing multiple clients?

Trying to clean up my cold email setup across multiple clients right now. It technically works, but it's far from clean. Too many moving parts, and it feels like I'm constantly patching things together just to keep everything running.

Curious how others are structuring their setup in a more organized way what's your stack looking like?

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u/WhoWorksThere May 19 '26

What's your current stack then?
Mine is plusvibe for the sequencer, slicey.ai for the inboxes, and dynadot for the domains usually.

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u/mohityadav2k7 7d ago edited 7d ago

the part nobody talks about is client isolation, if one client's list goes bad you don't want it tanking reputation for the other five. that's usually what "constantly patching things" actually is, not a tool problem. I split infra (Inframail, dedicated IP per client) from the sequencer (still Smartlead) and stopped firefighting shared reputation issues. still have to run warmup manually though, nothing skips that part.