What cold email mailboxes actually cost, compared side by side.
Independent price tracker for cold email mailboxes and infrastructure. We don't sell inboxes. We check each provider's own pricing page and log every change.
| Provider | Type | Per mailbox / mo | 30 mailboxes / mo | + 10 domains / mo | Total / mo | Minimum | Warmup | |
|---|---|---|---|---|---|---|---|---|
| Puzzle Inbox Outlook 365 inboxes (3 sends/day each) |
Google/Microsoft reseller | $0.35 | $10.50 | $0.87 * | $11.37 | None stated | Optional | Pricing |
| Outboxes EU-hosted private SMTP mailboxes |
Private SMTP | €0.78 | €39 | €10 | €49 | 5 domains (EUR 19.50/month) | No | Pricing |
| Winnr SMTP/IMAP accounts |
Shared SMTP | $1.38 | $69 | $10.83 | $79.83 | Startup plan ($69/month) | Add-on | Pricing |
| Maildoso SMTP mailboxes (15 sends/day cap) |
Shared SMTP | $2.50 | $75 | $12.50 | $87.50 | 30 mailboxes | No | Pricing |
| Mailpool SMTP inboxes |
Shared SMTP | $3 | $90 | $8.72 * | $98.72 | None stated | Unknown | Pricing |
| Puzzle Inbox Google Workspace inboxes |
Google/Microsoft reseller | $3 | $90 | $8.72 * | $98.72 | None stated | Optional | Pricing |
| InboxKit Google & Microsoft mailboxes |
Google/Microsoft reseller | $3 | $90 | $8.72 * | $98.72 | None | Add-on | Pricing |
| Mailforge Shared-IP SMTP mailboxes |
Shared SMTP | $3 | $90 | $11.67 | $101.67 | 10 mailbox slots | No | Pricing |
| Zapmail Google & Microsoft mailboxes |
Google/Microsoft reseller | $3.30 † | $99 | $8.72 * | $107.72 | 10 mailboxes (starter plan, third-party) | Optional | Pricing |
| Hypertide Google inboxes |
Google/Microsoft reseller | $3.30 | $99 | $8.72 * | $107.72 | None | No | Pricing |
| Cheap Inboxes Google & Microsoft mailboxes |
Google/Microsoft reseller | $3.50 | $105 | $8.33 | $113.33 | None stated | Unclear | Pricing |
| Premium Inboxes Google & Microsoft mailboxes, done-for-you |
Google/Microsoft reseller | $3.50 | $105 | $8.72 * | $113.72 | No monthly commitment | No | Pricing |
| Mailpool Google Workspace inboxes |
Google/Microsoft reseller | $4 | $120 | $8.72 * | $128.72 | None stated | Unknown | Pricing |
| Infraforge Private SMTP, dedicated servers |
Private SMTP | $4 | $120 | $11.67 | $131.67 | 10 mailbox slots; quarterly or yearly billing | No | Pricing |
| Primeforge Google Workspace & Microsoft 365 mailboxes |
Google/Microsoft reseller | $4.50 | $135 | $11.67 | $146.67 | 10 mailbox slots | No | Pricing |
| Inframail Microsoft-backed inboxes, flat fee |
Microsoft (flat rate) | flat plan † | $147 | $8.72 * | $155.72 | Flat plan | No | Pricing |
| Mailpool Microsoft 365 inboxes |
Google/Microsoft reseller | $5 | $150 | $8.72 * | $158.72 | None stated | Unknown | Pricing |
| Mission Inbox Dedicated-IP outbound mailboxes |
Private SMTP | $3.33 | $199 | $8.72 * | $207.72 | 15 mailboxes (Lite) | Unknown | Pricing |
| Google Workspace (direct) Business Starter, bought from Google |
Google direct | $7 | $210 | $8.72 * | $218.72 | 1 user | No | Pricing |
| Mailreef Dedicated mail server |
Private SMTP | flat plan | $249 | $8.72 * | $257.72 | One server | Optional | Pricing |
Total = list price for 30 mailboxes on the cheapest plan that fits, plus 10 sending domains (3 mailboxes each) amortised monthly. * Domain price unknown or bring-your-own, so a reference .com at $10.46/yr is used. † Price from a third-party comparison, not the provider's own page. € rows are in euros excl. VAT and sort by their face value. Sending caps differ a lot (e.g. 3 vs 15 vs 50 emails/day per mailbox), so open a provider for details. How we calculate.