Maildoso vs Smartlead (2026): which should you pick?

Pick Maildoso if

• Fits if you need 30 or more mailboxes for an outbound team
• Works for senders who already run Instantly or Smartlead

Look elsewhere if

• Skip it if you need just a few mailboxes, since 30 is the smallest block
• Not for you if you want a trial or a discount, because neither exists
• Watch out: domains cost extra, $15 a year or $11.90 a month pre-warmed
• Tight if you want volume per mailbox: 15 cold emails a day each

Pick Smartlead if

• Fits if you run cold email for several clients and want each in its own workspace
• Works for senders who spread big campaigns across dozens of mailboxes

Look elsewhere if

• Skip it if you want LinkedIn steps built in, as Smartlead is email only
• Tight if you stay on Base, with 2,000 contacts and no CRM, API or webhooks
• Pricey if you add the extras, as inbox tests start at $49 a month and servers cost $39 each
• Watch out: verified lead emails are $59 a month extra on Base and Pro, and verification is sold in packs from $32
• Watch out: there's no free plan, and the trial stops at 2,500 sends and 1,250 contacts with white labeling locked

Maildoso

• Each mailbox sends at most 15 cold emails and 80 warm-up emails a day, and new mailboxes still need about 14 days of warm-up unless they sit on pre-warmed domains.
• Domains are not included in monthly plans: registration is $15 a year and a pre-warmed domain is $11.90 a month.
• Quarterly plans with domains included are labeled legacy on the pricing page; the monthly blocks are the current plans.
• Subscriptions are canceled through support chat or email, and the page says it has a no-discount policy with no promotions.

Smartlead

• Base has no CRM, API or webhooks and stores only 2,000 contacts.
• Verified lead emails cost $59 a month extra on Base and Pro, and email verification is sold separately in credit packs from $32.
• Inbox placement tests (SmartDelivery, from $49 a month), dedicated servers ($39 each a month) and calling credits (from $9 a month) cost extra.
• There is no free plan; the 14-day trial allows 2,500 sends and 1,250 contacts and leaves out white labeling.

Maildoso

Mailboxes built for outbound

Dedicated mailboxes on the vendor's own servers and IPs, with IP rotation and automatic replacement of IPs that stop working.

Automatic DNS setup

SPF, DKIM and DMARC records are configured when you register mailboxes under a domain bought or connected through the dashboard.

Self-healing and health scores

Burned-out mailboxes are disconnected from campaigns for 14 days, and inbox placement tests run every 3 days with a health score per mailbox.

Sequencer export

Mailboxes can be exported to outreach platforms; Instantly, Smartlead and EmailBizon sync with one click, and the vendor says 9 sequencers are supported.

API and MCP server

Register domains, create mailboxes and push them to a sequencer from code or from an AI assistant such as Claude.

Pre-warmed domains

Domains warmed in advance, each holding up to 50 mailboxes, so new mailboxes can start sending without the usual 14-day wait.

Smartlead

Unlimited mailboxes with rotation

Every plan connects any number of email accounts, warms them up and spreads a campaign's sends across them to protect each sender's reputation.

Unified master inbox

Replies from all accounts land in one inbox sorted by intent, with bulk actions and Kanban deal tracking. CRM access starts at Pro.

SmartProspect lead finder

A built-in B2B lead finder. Verified prospect emails are included on Unlimited Smart and Prime and are a $59 a month add-on on Base and Pro.

SmartAgents and SmartAssistant

AI agents and an assistant create campaigns, watch warmup and mailbox health, find leads and sort replies, on every plan including the trial.

Client workspaces and white labeling

From Pro, agencies run each client in its own workspace under their own brand for $29 a month per workspace; Unlimited Prime includes 3.

API, webhooks and MCP

Pro and above include the API and webhooks, and an MCP server gives AI assistants such as Claude access to campaigns, mailboxes and leads.

Maildoso

• 30 mailboxes$75

  per month for 30 mailboxes ($2.50 each)

  Aimed at early-stage teams. Up to 15 cold emails a day per mailbox, plus the features every plan includes.

• 300 mailboxes$225

  per month for 300 mailboxes ($0.75 each)

  Aimed at expanding teams. Same features and 15-a-day limit per mailbox as the smaller block.

• 1,000 mailboxes$499

  per month for 1,000 mailboxes ($0.49 each)

  Aimed at large-scale campaigns. Same features and per-mailbox limit.

Smartlead

• Base$32

  per month for 6,000 emails, billed yearly ($39 monthly)

  2,000 stored contacts, unlimited mailboxes and warmup. No CRM, API or webhooks; 2,000 verified prospect emails are a $59 a month add-on.

• Pro$78

  per month for 90,000 emails, billed yearly ($94 monthly)

  30,000 contacts, CRM, API and webhooks, and client workspaces at $29 a month each. 30,000 verified prospect emails are a $59 add-on.

• Unlimited Smart$144

  per month for 150,000 emails, billed yearly ($174 monthly)

  Unlimited contacts, the premium warmup pool, calls with a customer success manager and 50,000 verified prospect emails included.

• Unlimited Prime$315

  per month for 500,000 emails, billed yearly ($379 monthly)

  170,000 verified prospect emails, 3 dedicated SmartServers, 3 client workspaces, a dedicated manager and a private Slack channel.

Maildoso

No public discounts listed.

Smartlead

• Annual discount

  Save 17% with yearly billing

  Billed yearly, Base is $32 a month instead of $39, Pro $78 instead of $94, Unlimited Smart $144 instead of $174 and Unlimited Prime $315 instead of $379.

• Other savings

  50% off the first month

  The pricing page offers new sign-ups 50% off their first month on any plan, with no end date shown.