Premium Inboxes

Starting a thread where we will post daily customer satisfaction messages, just to show this isn't luck lol.

Our internal monitoring system has caught 12,375 dead addresses for one customer so far. Every morning it reads yesterday's bounces and sorts each one: • Dead address: the address doesn't exist, so it goes on the block list of every workspace • Dead domain: a domain that's gone, blocked the same way • Repeat: the same address bouncing a second time • Server rejection: these point at sender's reputation, so we read each one No campaign emails a dead address again.

A fresh batch of our inboxes let one agency's client 3x its sending volume. BEFORE: → 7,396 emails sent the 14 days before. AFTER: → 21,720 emails sent in 14 days Plus: • Its reply rate held at the same level. • Positive replies went up. • And its bounce rate went down. This is the power of proper infrastructure.

There’s no better feeling than having a team backing you when things go wrong with your infrastructure. That’s why our 2,000+ customers get their support in Slack, without ever needing to raise a ticket. When a problem comes up, here's who is already in a customer's channel: • Account managers, from 10am UK time, when the first one logs on, to midnight UK, when the last one logs off. • Technical support, in the same channel as account management. • An account management assistant, to pick up anything that slips. • Both of our co-founders. That's 14 hours of account management coverage a day, in one channel.

An inbox provider can see your copy, your lists and who you're going after. That's why we don't run a cold email agency, and we don't take on clients. All we do is provide infrastructure. None of your copy or lists will ever feed a campaign of ours. It also means our business only works one way. Customers stay with us when they get good at cold email, and they leave when they don't. So what we learn from running the infrastructure goes back to customers, for free, to help them stay.

We've set up 570K+ cold email inboxes without ever keeping a customer's domains in our own system. When you buy domains through most inbox providers, they belong in that provider's system, not yours. If you leave, you have to buy every domain again. We don't do it that way. → You buy the domains yourself → Or we buy them for you in your own hosting account So if you ever leave, your domains go with you.

Imagine never having to manually remove a bouncing inbox ever again? At @premiuminboxes, our monitoring does it with these rules: • An inbox that bounces 20% or more over three days (30+ sends) comes off sending • So does an inbox whose warmup score drops under 95 • The day it's healthy again, it goes back to work • Every inbox it has rested for that customer so far has come back Our cold email audit is free. Reply or click the link in bio and we'll run it on your setup.

We guarantee inbox setup within 60 minutes, whether you order one inbox or 10,000. That said, every order has to be fast AND great. Our 3 principles at @premiuminboxes: Speed: • Your inboxes are built within the hour • Then they are uploaded to your sending platform Quality: • An engineer checks the SPF, DKIM, DMARC records on every inbox by hand, then a live placement test confirms them before you get it Communication: • You should know exactly what is happening on your domain, from the DNS records to DKIM Hit the link in our bio for more details.

Ask to see the placement test before you trust any inbox provider. "You're good to go" SHOULD mean: • an engineer already placement-tested every inbox by hand. • they check SPF, DKIM and DMARC on each inbox by hand. • then real mail goes to an inbox the provider controls, on both Google and Microsoft. At @premiuminboxes, it has to land in primary before that "good to go" email leaves our side.

Most providers sell you a batch of inboxes once, then leave them to degrade. By the time the reply rate drops, you’ve been landing in spam for weeks. At @premiuminboxes, we’ll rebuild yours before that happens, at no extra cost. When we rebuild accounts, we move them to a fresh Google admin panel. That rotates the sending IP and refreshes them. No new domains to buy. We run that rebuild 2-3 times inside one subscription. Across our customers, that holds the average setup for 9 to 12 months. Ask your provider what happens to your inboxes at week five.

An outbound team's reply rate fell from around 3% to 0.7% over one weekend. We rebuilt all 500 of their domains and tested every one. The trigger was a blacklist that hit .info domains that Saturday and Sunday, and their sending ran on .info. Our team moved all 1,500 accounts across those 500 domains onto brand new admin panels, which puts each account on a fresh sending IP. Then we sent one bland email from every single domain as a placement test. EVERY one landed, on Google and on Microsoft. They then continued to use that same infrastructure for months. A reminder to placement-test every domain before you send again.

A reminder to read the replies before you report the rate. For one of our customers, a campaign showed a 3% reply rate. We read all 25 replies by hand, and not one was interested. 20 were out-of-office auto-replies. The other 5 were 4 do-not-contact requests and a single no. Positive reply rate is king.

Whether you order 1 inbox or 6,000, and they’ll reach your sequencer in about 4 hours. 1 hour if you are part of PX3 That's our average delivery time. >> Our engineers build every account >> They configure the records inside that window. >> Each inbox passes a live placement test before delivery The outer limit… 6 hours from the moment you press purchase.

Price is rarely why a team switches inbox providers. Support is the #1 reason teams move their sending to us. So we're putting the question to the market. What would make you switch inbox providers?

A low warm-up health score is a weak reason to hold a campaign back. If an account's score dips one week and recovers the next with no fix, the dip meant nothing. That account could have been sending the whole time. We flag an account when its reply rate drops below its own first-week baseline. Judge an account on its replies.

Hand your mailboxes to a team that watches them for you → spend the quarter signing clients. One agency running around 400 mailboxes across 8+ clients signed 5 new clients in Q2 on our infrastructure. Before, they split those mailboxes across a few different providers. When something went wrong, they had hardly any visibility into where. At @premiuminboxes, all of it now belongs with us: • Google and Microsoft inboxes under a SINGLE platform. • A private Slack channel for their quick questions. • White glove management, with our team watching over the infrastructure for them. Since moving to us, their reply rates have held consistent. All 5 new clients came from outreach sent on that same infrastructure.

The warm-up we recommend for every Microsoft inbox runs 3 to 4 weeks. Google inboxes are ready to send inside 2. Microsoft builds trust scores more slowly, so the ramp starts around 5 emails a day and builds to 12-15. Plan the Microsoft side of every campaign around those extra weeks.

New customers ask us how fast a positive reply needs an answer. The target we give them: 60 seconds. If 10 minutes is your fastest today, start there and work down to a minute. How fast does your team answer a positive reply?

The #1 cause for a disconnected mailbox is an unpaid invoice with the inbox provider. Your accounts connect to the sequencer through an OAuth connection, an authorized application inside Google. A disconnect means something else went wrong. Once that invoice goes unpaid, the provider removes the accounts and the connection goes with them. SMTP issues come second, then OAuth token refresh. TL;DR: Check the billing before you check the settings.

When you have a partner that owns deliverability for you, every dip gets caught before it costs you. One agency runs $4.5M a month in new client revenue through our infrastructure. At that scale, a slight dip can cost them $100,000 without anyone noticing. So we flag the drop as soon as it starts. Our devs built them an ENTIRE flow that swaps bad inboxes for new ones. Warmup and signature config are automated too.

Need a cold email setup that lands you clients? With @premiuminboxes, it takes 3 steps: (everything technical after that is ours) • Buy your domains. • Buy your inboxes. • Submit the onboarding form. (~10 minutes) From there, we configure the accounts and upload them into your sequencer. They go into your warm-up pool with the settings preset to best practice, so nobody on your side has to touch them for the first two weeks. If you want your current setup checked before you buy, the cold email audit at @premiuminboxes is free and includes a live placement test. Everything starts on the Premium Inboxes website, link in bio!