Premium Inboxes vs Maildoso (2026): Pricing, Mailbox Type and Which to Choose
Last updated October 10, 2026
The biggest difference is the mailbox itself. Premium Inboxes sells official Google Workspace and Microsoft 365 inboxes and sets them up for you; Maildoso sells its own SMTP mailboxes built for outbound.
Maildoso is much cheaper: $75 a month for 30 mailboxes, versus $84.00 for the first 4 weeks of 30 Premium Inboxes with GET20 ($105.00 every 4 weeks after that), and the gap grows with volume.
Premium Inboxes vs Maildoso at a Glance
| Premium Inboxes | Maildoso | |
|---|---|---|
| Mailbox type | Official Google Workspace and Microsoft 365 | SMTP mailboxes built for outbound |
| Price per mailbox | $3.50 down to $2.80 (20% off your first bill with GET20) | $2.50 down to $0.49 on monthly plans |
| Billing | Every 4 weeks | Monthly, or quarterly with domains included |
| Domains | Sets up the domains you provide | Included on quarterly plans; otherwise $15/year each |
| Sending per mailbox | 15 cold emails a day | Up to 15 emails a day |
| Setup | Done for you: DKIM, DMARC, MX, SPF, domain tracking and forwarding | Platform: self-healing mailboxes, IP rotation, CAPTCHA domain protection, reputation measurements |
| Replacements | Unlimited and free if performance drops | Self-healing mailboxes |
| Guarantee | No setup fees, no annual contract, cancel anytime | 30-day money-back guarantee for new users on monthly plans |
| API | Yes | Yes, plus MCP access |
| Coupon | GET20 for 20% off | None found |
Cost Compared at Maildoso's Plan Sizes
| Mailboxes | Premium Inboxes first 4 weeks with GET20 | Premium Inboxes year with GET20 | Premium Inboxes year, no coupon | Maildoso / month | Maildoso / year |
|---|---|---|---|---|---|
| 30 | $84.00 | $1,344.00 | $1,365.00 | $75.00 | $900.00 |
| 300 | $720.00 | $11,520.00 | $11,700.00 | $225.00 | $2,700.00 |
| 1,000 | $2,400.00 | $38,400.00 | $39,000.00 | $499.00 | $5,988.00 |
Premium Inboxes bills every 4 weeks, so a year is 13 charges; GET20 discounts only the first. Maildoso monthly plans exclude domains. Maildoso also sells quarterly plans with domains: 32 mailboxes and 8 domains for $299, 68 and 17 for $499, 400 and 100 for $2,199.
Which Should You Choose?
Choose Premium Inboxes if…
- you want real Google Workspace or Microsoft 365 accounts
- you want a team to configure and replace inboxes for you
- you can justify a higher price per inbox for that
Choose Maildoso if…
- lowest cost per mailbox matters most
- you are happy sending from SMTP mailboxes rather than Google or Microsoft
- you want a money-back guarantee to try it
Premium Inboxes vs Maildoso FAQ
Does Maildoso use Google Workspace?
No. Maildoso describes its mailboxes as SMTP mailboxes designed specifically for outbound campaigns. Premium Inboxes sells official Google Workspace and Microsoft 365 inboxes.
Is Maildoso cheaper than Premium Inboxes?
Yes, by a wide margin. Maildoso's monthly plans are $75 for 30 mailboxes, $225 for 300 and $499 for 1,000. The same counts at Premium Inboxes cost $84.00, $720.00 and $2,400.00 for the first 4 weeks with GET20, then the normal price every 4 weeks after that. The trade-off is the type of mailbox and how much is done for you.
Are domains included?
Maildoso includes domains only on its quarterly plans; otherwise domain registration costs $15 per year from October 1, 2026. Premium Inboxes sets up the domains you give it.
How many emails can each mailbox send?
Both providers rate each mailbox for about 15 cold emails per day.
Is there a coupon code for Premium Inboxes?
Yes. GET20 takes 20% off your first Premium Inboxes payment. Enter it under "Apply Coupon" at checkout.
Sources
Prices and features checked on each provider's own site on October 1, 2026.