Maildoso uses monthly pay-per-mailbox pricing.

As of June 2026 the plans are:

• 30 mailboxes for $75/month ($2.5 per mailbox),
• 300 mailboxes for $225/month ($0.75 per mailbox),
• and 1,000 mailboxes for $499/month ($0.5 per mailbox).

If you need a specific number of mailboxes (outside of standard subscription plans), you can purchase them on the 'Packages & Add-ons' page inside the platform (prices start at $0.49).

Every plan includes self-healing mailboxes, IP rotation, CAPTCHA domain protection, API and MCP access, free deliverability audits, and a 30-day money-back guarantee.

We offer two types of mailboxes — SMTP and Google Workspace, as well as a combo of both.

Advantages of SMTP:

• Designed specifically for outbound
• Lower cost (starting from $0.49)
• Fully proprietary infrastructure, including servers and IPs
• Your campaigns are sent from different IPs, and we automatically replace them with new ones if they stop working
• We automatically replace links and images in your emails with safe alternatives using Global Customer Domain Tracking
• Burned-out mailboxes are automatically disconnected from campaigns for 14 days to recover
• We run inbox placement tests every 3 days and display up-to-date health scores for each mailbox.

Learn more on the SMTP product page; all the packages are available on the Pricing page.

Advantages of Google Workspace mailboxes:

• More stable deliverability, according to various estimates
• Automatic connection to your sequencer
• Ability to add a profile picture
• Each domain is hosted on a separate, fully isolated Google Workspace account.

You can purchase Google Workspace mailboxes directly in the dashboard, starting from $3.

Can I delete mailboxes?
Yes.

You purchase a license for a specific number of mailboxes rather than specific accounts. If you delete and recreate them, you don't need to pay extra. However, please note that new mailboxes require a warm-up period.

How do I change the names of mailboxes?
Find out in our Knowledge Base.

Are domains included in the plans?
Yes, but only for quarterly SMTP plans. For monthly plans, they must be purchased separately, or you can connect your existing domains.

How much do domains cost?
The domain registration fee is $12 per year. This price is fixed and does not change based on the number of domains.
You can purchase domains on the pricing page or in your personal account on the Packages & Add-ons page.

Which TLD's are available for domain registration?
We use the following TLDs for domain registration: .com, .net, .org, .one, .co, .email, .ink, .digital, .company, .pro, .services, .space, .co.uk, .de.

Can I connect my own domains? Yes. To do this, send a list of your domains to our support team via the website chat or at help@realmaildoso.com
You can also connect external domains yourself via the API. For this, consult the API documentation and watch our Loom video.

Do I retain ownership of domains purchased through Maildoso?
While you are using our service, domains are registered with us, enabling us to facilitate processes such as creating emails, IP rotation, and more.
You can request that the domains be returned at any time, and we will transfer them back to you at no charge at the end of your subscription.

How many mailboxes can I create per domain?

• SMTP: Up to 99 mailboxes per domain, but we recommend no more than 8.
• Google Workspace: Up to 5 mailboxes per domain.

How many emails can I send from one mailbox?

• Google Workspace: 15 cold emails / 25 warm-up emails per day (with slow ramp-up).
• SMTP: 15 cold emails / 80 warm-up emails per day, no slow ramp-up (clarify if your sequencer allows for this volume of warm-up emails).

Can I send emails to free email hosting services (@gmail.com, @yahoo.com, etc.)?
Our infrastructure is optimized for B2B outreach. As a result, campaigns targeting personal email providers may experience reduced inbox placement when sent from standard Maildoso mailboxes.
To address this, we have recently started offering authentic Google Workspace mailboxes that are better suited for sending to personal email providers. These mailboxes are designed to improve inbox placement when targeting contacts on Gmail, Outlook, Hotmail, and similar platforms.
You can learn more about these Google Workspace mailboxes on the GW product page.

All current prices are available on the pricing page.

Do you offer discounts?
No, we have a no-discount policy. Our prices are the same for all users, and we do not run promotions or sales.
Instead, we offer affordable pricing from the start, without the need for discounts. For instance, we offer the lowest prices on the market for official Google Workspace accounts with a business license.

What if I need a specific number of mailboxes?
You can set up a custom plan on the Packages & Add-ons page and choose the exact number of mailboxes and domains you need.

I need more than 10,000 mailboxes.
Special conditions apply for high volumes. Contact our AE team via the website widget or by filling out this booking form.

Yes. Maildoso's API and MCP server let you register domains, create mailboxes, and set up SPF, DKIM and DMARC programmatically, then export them straight to your sequencer. You can even run the whole setup from an AI assistant like Claude. It's the fastest way to scale your sending infrastructure alongside a growing lead list.

Thank you for choosing us! Here are your next steps:

1) Authorization
For some of our plans, you need to authorize first — in this case, you can log in immediately, and your mailbox license will already be available.
If you didn't authorize during checkout, your login credentials will be sent to the email address used in Stripe. Check your spam folder if you don't see them.

2) Connecting Domains
If you have your own domains, send the list via chat or to help@realmaildoso.com; they will be connected within 24 hours. If you don't have domains, you can buy them for $12/year on our pricing page or on the Packages & Add-ons page.

3) Registering Mailboxes
Go to the 'Accounts' page and click 'Add more email accounts'.
Choose the type (Google Workspace or SMTP), enter the first and last names, and select the domain. You can auto-fill multiple lines at once.
Need more than 4? Click 'Add new line'.

4) Connecting to your Sequencer

• For SMTP: Select the accounts, click 'Export selected to CSV', and choose your format (we support 9 sequencers natively).
• For Google Workspace: Connect them directly – enter your sequencer credentials on the settings page, then on the accounts page, select the mailboxes and click 'Add to sequencer'.

More info here.

How long does it take?

• Registering a new domain: up to 15 minutes.
• Adding an existing domain: up to 24 hours.
• Registering an SMTP mailbox: 5 minutes.
• Registering a Google Workspace mailbox: up to 2 hours.
• Connecting Google Workspace to a sequencer: 2–24 hours.

The easiest way is to use our website chat widget.

Support hours: US (ET): 2 AM – 5 PM / Europe (CET): 8 AM – 9 PM

Average response time during working hours is 20 minutes.

You can also email us at help@realmaildoso.com or join our Slack Community.

My emails aren't reaching recipients. What should I do?

First, consult our Deliverability Guide – it solves most issues.

Additionally, all clients can request an audit from Maildoso experts: we will run tests and check your copy for spintax and spam words. You can book your session by clicking the "Deliverability Audit" button in your dashboard.

You can also reach out to our community experts — they can assist you with campaign setup, lead mining, consulting, and training. Please note that since these experts are not part of Maildoso, we cannot be held responsible for the quality or cost of their services.

To cancel your subscription, please contact our support team via the chat widget on our website or by email at help@realmaildoso.com.

Please note: We offer a 30-day money-back guarantee for all new users (available for monthly SMTP packages).

In all other cases, please refer to our Refund Policy.

If you use our mailboxes and are happy with the results, we would appreciate it if you could leave a review on Maildoso G2 page.

We also have an affiliate program — tell your friends and colleagues about us and receive 20% of their payments. You can sign up on the Tolt registration page.

If you would like to become our ambassador, please contact Vlad, our Head of Marketing (vlad@maildoso.team, LinkedIn page).

We are also always looking for webinar speakers!
If you have insights to share with our audience (5,000+ product users, 15,000+ LinkedIn followers, and 1,400+ Slack Community members), write to Vlad, and he will organize everything (you can watch our previous webinars on the Maildoso Webinar page).