Piotr M.

Make sure SPF, DKIM, and DMARC are properly set up

Always warm up your email accounts, choose a good warm-up tool carefully (some warm-up pools are already burned)

Buy aged domains (2+ years old)

Warm up for at least 31 days, spammers usually do 2 weeks, which is not a good strategy

Avoid sudden increases in sending volume, don’t send more than 150 emails per day per domain

It’s better to have 20 domains with 3–4 mailboxes each than one domain with 200 mailboxes

(There are advanced ways to send thousands of emails from one domain using expensive SMTP infrastructure, but don’t go down that path unless you really know what you’re doing)

Recommended volume per mailbox: 15–30 emails/day

Have sets of infra that you’re using smtps, google, hypertide

Warm-up should be continuous, keep warming up the mailboxes on the days you’re sending from them

Use Debounce and BounceBan for catch-alls

A bounce rate below 1% is achievable, I’m getting less than 0.5%

Write emails that you would actually reply to

Use lead magnets

Use spintax or AI to keep content varied

Include low-friction CTAs

Limit campaigns to a maximum of 2 messages

Always pause a campaign if real response rates drop below 2%

Your sending platform matters

Rotate domains every 2 weeks to keep a clean reputation

Be consistent, if you’re sending 100 emails per day per domain, stick to that every day, whats even better is starting from 50, next going to 75, next 100 🙂.