Premium Inboxes
Alternative & Review

The company was founded in June 2023 by Richard Illingworth.

Premium Inboxes describes itself as a reseller of Official Google Workspace and Microsoft 365 Business inboxes. The product appears built for teams that want a provider to handle mailbox provisioning and setup rather than assembling these pieces manually. Its public page lists a "Done-For-You" setup process, unlimited replacement inboxes, and an "Insured Infrastructure" plan.

Premium Inboxes' main difference is the focus on official infrastructure. The site highlights that they provide official Google and Microsoft business accounts, which they claim offer better deliverability than shared IPs or custom SMTP setups. They also offer Priority Support, a Dedicated Account Manager, and a Dedicated Slack Channel for Enterprise and Insured Infrastructure plans.

Trustpilot: 4.0/5, 4 reviews
G2: 5.0/5, 4 reviews

"I’d tread carefully here. Mailpool and similar bulk resellers usually do offer legitimate Google Workspace licenses, but they’re technically reselling under their own admin umbrella. That’s why you still see limited access, even if you’re given admin controls, your Workspace sits under their reseller domain. It works fine until Google changes reseller policies or revokes a partner account, and then you’re stuck migrating everything." – Mailpool reviews?

"Mailpool is utterly amazing. Was trying to set up an ai assisted cold outreach pipeline for my own automation agency. Utterly excellent UI/UX. Super responsive support (i think its just one mexican lady - but goddamn she knows her shit). I think its a small company but goddamn I love it. Quite literally the first review I've ever added for a service. But just felt like payinig back in some way." – Mailpool + Smartlead Review?

🟢 Official infrastructure. Premium Inboxes offers official Google Workspace and Microsoft 365 Business mailboxes, which can be appealing for teams that prefer these established providers.
🟢 Done-For-You setup. The platform provides a fully managed setup process, reducing the technical burden on users when provisioning new mailboxes.
🟢 Unlimited replacements. Premium Inboxes includes unlimited replacement mailboxes, which helps mitigate the impact of burned accounts.

🔴 Inboxes are not pre-warmed. Users must handle the warm-up process themselves, which delays the start of active outreach campaigns.
🔴 Potential for batch suspensions. Some users have reported entire batches of accounts getting suspended simultaneously, likely due to shared provisioning patterns.
🔴 No explicit free trial. The official website does not clearly mention a free trial, making it harder for teams to test the service before committing.

Maildoso isn’t a complex management suite or a sequence builder – we know that real outreach needs a rock-solid foundation. We understand how the inbox works way better than those "all-in-one" platforms. From our self-healing mailbox rotation to automated email deliverability infrastructure checks, we do all the technical "dirty work" for you, so you can stop worrying about the tech and get back to closing deals.

We provide high-authority mailboxes designed to stay healthy for months, not weeks, allowing your outreach team to focus on the 1% of deals that matter rather than the 99% of tech that usually breaks. It’s a specialized environment for agencies looking for a reliable SMTP mailbox for agencies that have graduated from generalist tools.

G2: 4.7/5 (181 reviews)

"Tried it mainly because of the good price, but ended up sticking with it since deliverability’s been pretty stable so fa" – Thinking about trying "Maildoso". Has anyone here used it? Is it actually better than other tools?

"I tested a small batch first and results were comparable to our Google setup. Ended up moving more campaigns there because of the lower cost. That's a good strategy, buy small package and compare with your current setup – I want to try Maildoso. What do you guys think about it?)"

🟢 Dynamic IP Rotation: We rotate your IP addresses in real-time – if an IP gets flagged or blacklisted, we instantly swap it for a clean one before your campaign takes a hit, ensuring your emails consistently land in the primary inbox rather than getting stuck in spam.
🟢 Self-Healing Rotation System: An automated resting period for mailboxes every two weeks that clears provider flags and recovers reputation on autopilot.
🟢 Global Customer Domain Tracking: Proprietary technology that allows you to safely include links without compromising your sender reputation.
🟢 Automated Inbox Placement Tests: Free email deliverability infrastructure testing every three days for all mailboxes, giving you real-time visibility into your health.

🔴 Conservative Limits: We suggest sticking to 15 emails a day per box to keep your domains healthy for the long run. You are free to send more if you choose, but be aware that aggressive "blasting" is a fast track to burning your reputation.
🔴 Google/SMTP Focus: We do not support Microsoft 365/Outlook/Azure environments at this time.
🔴 Lack of built-in warmup. We do not have an integrated warm-up yet, but we are currently working on it.

Overall, we haven't found anything suspicious – the product looks reliable and is priced at a fair market rate.

We should also highlight that this provider has the highest number of reviews on Trustpilot, with over 380 ratings. That is truly impressive. Furthermore, their promised delivery time of under 6 hours is an excellent benchmark (I once set up mailboxes with Scaledmail and ended up waiting nearly three days).

Because of this, we recommend Premium Inbox.

However, we’d like to note that our mailboxes offer the same level of reliability but at a more affordable price point. We suggest diversifying your infrastructure and testing different solutions – this is the best way to find the perfect setup for your specific needs.