Cheapest way to send 10k emails? Don't.

ranktracker

I've seen too many people nuke their domains chasing the cheapest sending stack. Here's the thing - you can send 10k emails for pocket change using something like Mailgun or SendGrid on a free tier, but your deliverability will be f*cked within a week if you're not warming up properly and using clean lists. I've been doing this for years and have written scripts to analyse SMTP logs and monitor bounce rates. Start with 500 a day, use a proper cold email tool like Lemlist or Instantly (or build your own using Python and an API), and build your lead list manually or with a tool like Apollo. Scraping cheap lists from data brokers is a fast way to get blacklisted. Focus on list quality, not quantity. And always warm up each new domain for two weeks before sending at scale. If you need help setting up SPF/DKIM/DMARC, I've got a step-by-step guide somewhere - happy to share.

cpaoptimizer

If you're new, don't start by asking how to send 10k as cheaply as possible. That usually leads to burnt domains, poor data, and zero replies.

Split the stack into three parts: leads, verification, and sending. For leads, Apollo, Snov, Hunter, Prospeo - they can work, but don't buy a massive list and blast it. Build a tighter ICP first. For verification, run every email through a verifier before sending. Bounces wreck your sender reputation fast. For sending, use separate domains and inboxes, warm them slowly, and never send from your main company domain.

10k a month isn't crazy, but only if you ramp up properly. With brand new domains, start much smaller - test 200-500 highly targeted contacts, see if the offer gets replies, then scale. Volume won't fix bad targeting.

Something like SMTPProvider can help on the sending side - SMTP sending, domain checks, controlled limits, bounce visibility, and not wrecking domains while testing. But still spend more time on list quality and the offer before worrying about sending 10k.

Cheapest stack isn't always the cheapest long-term. Bad leads plus bad sending setup gets expensive quickly.

wordweaver

Oh, the classic "cheapest way" trap - I've seen this backfire more times than I've seen a bad UGC pitch. Cheapest gets your deliverability roasted faster than a cheap barbecue. Start small, warm up your domains, actually get some replies, and then think about scaling to 10k. Otherwise you're just building a spam reputation for free.

marcuthread

Yeah, honestly for 10k a month the cheapest approach is not getting your shit kicked by spam filters. Most people skip the data step and then wonder why their domain gets blacklisted in a week.

I grab leads from Prospeo - it's cheaper than most alternatives I tested, and the verification actually holds up. Then push everything through Instantly with 3-4 domains spread out. The verified emails keep bounce rates low, which is the only thing that really protects your sender rep. It's boring infrastructure work, but cheaper than rebuilding a domain from scratch.

dailygrind

Honestly, $300-$600 is about right if you want deliverability that doesn't land you in spam folders. I've been down the "cheapest possible" road and it cost me more in burnt sender reputation than the postage itself.

here's how I'd break it down for 10k emails:

Transactional via AWS SES - You can get away with ~$10-$20 for volume, but you're fighting cold-start reputation. Not worth it for cold outreach. You'll need dedicated IPs, warmup sequences, and constant monitoring. By the time you add those, you're back to $300+.
API-first providers (SendGrid, Mailgun) - Their lowest tiers usually cap at 100-200 emails/day free. To send 10k in a single batch you need at least their $30-$50/month plan, plus dedicated IP if you're sending from a new domain. That pushes you to $200-$300.
Self-hosted with a VPS + Postfix - You can do this for ~$10/month on a DigitalOcean droplet, but you'll need to configure SPF, DKIM, DMARC, warm the IP, and monitor bounce rates manually. One misstep and you're blacklisted. the opportunity cost of your time doing that isn't zero.

The $300 figure assumes someone's done the warmup, has a decent domain reputation, and is using a proper sending platform with engagement tracking. The $600 side is if you need dedicated infrastructure and a shorter timeline.

If you're sending to cold lists, add another $100-$200 for list validation alone. Otherwise, you're burning cash on bounces and complaints.

TL,DR: cheap sending is a false economy. Spend the $300-$600 upfront, or spend three times that fixing your domain reputation later.

jamesaso

Agreed. No point cheaping out on the tool if your lead list is full of duds. I've seen app install CPAs skyrocket from a bad email list.

wordweaver

Too right. lead quality stomps volume into the ground every single time. The list is everything - the tool's just the delivery boy. I've seen where that distinction really bites people, happy to share if you want.