# #3 Maildoso

Maildoso sells SMTP mailboxes for cold outbound email, with automated domain and DNS setup, IP rotation and mailbox health monitoring. Website: maildoso.com. Category: [Email Infrastructure & Verification](https://gtmranked.com/best/email-deliverability/). Score 7/100 (2 positive, 0 mixed, 6 negative of 8 independent comments).

**Verdict:** Independent users mostly report poor inbox placement: mail landing in spam after warmup, domains that stopped performing, and one agency that says it lost clients, with a former customer adding that support blames copy instead of the infrastructure. A couple of users found it a simple, workable all-in-one setup, but the positive side is brief. Nearly half of the 22 comments look promotional, including a reseller seeding cluster and a run of casual 2026 posts repeating the same cheap-SMTP-versus-Google-Workspace talking points, one thread of which another commenter called out as shilling.

**What users like:**
- A simple all-in-one way to buy mailboxes for a small setup, per one cold-email practitioner [1](https://www.reddit.com/r/GTMbuilders/comments/1s1cbro/_/oc1ykzw/)
- One user's mailboxes, warmed for about three weeks, held steady at 40 sends a day for months [1](https://www.reddit.com/r/LeadGeneration/comments/1hxezfu/_/me9f913/)

**What users complain about:**
- Mail lands in spam even after warmup: users report about half going to spam at 10 sends a day, domains that stopped firing, and lost clients; one deliverability-minded commenter blames the shared IPs [1](https://www.reddit.com/r/LeadGeneration/comments/1hxezfu/_/mw574xg/) [2](https://www.reddit.com/r/LeadGeneration/comments/1hxezfu/_/mvz7u91/) [3](https://www.reddit.com/r/Coldemailing/comments/1v4bivw/_/ozoe09w/) [4](https://www.reddit.com/r/b2bemailing/comments/1v4bi6k/_/oza716n/)
- Support and its deliverability experts blame the email copy rather than investigating the infrastructure [1](https://www.reddit.com/r/b2bemailing/comments/1v4bi6k/_/ozbvnig/) [2](https://www.reddit.com/r/Coldemailing/comments/1v4bivw/_/ozoe09w/)
- Lacked built-in analytics, so monitoring deliverability needed third-party tools (2025 report) [1](https://www.reddit.com/r/EmailProspecting/comments/1jorv2v/_/mordyv9/)

**Best for:** Small setups that want an all-in-one mailbox purchase and will watch placement closely.
**Skip it if:** Agencies whose client results depend on inbox placement; Teams that expect the vendor to troubleshoot spam placement.
**Pricing (vendor-stated, checked 2026-10-14):** Monthly per-mailbox plans: 30 mailboxes for $75/mo ($2.50 each), 300 for $225/mo, 1,000 for $499/mo; domains extra at $15/year; quarterly plans with domains included are labelled legacy. 30-day money-back guarantee on monthly packages; no free plan or trial.

Full review: https://gtmranked.com/tools/maildoso/