Premium Inboxes vs Zapmail (2026): which should you pick?

Pick Premium Inboxes if

• Fits if you want 30 or more inboxes set up and handed over
• Works for agencies that already have a sequencer

Look elsewhere if

• Tight if you need fewer than 30 inboxes, because both plans have a 30-inbox minimum
• Skip it if you want a trial, as there is none
• Watch out: domains are not in the price, so you buy them yourself
• Pricey if you want an account manager, a Slack channel or 24-hour monitoring, since all three need the $4.50 tier

Pick Zapmail if

• Fits if you run cold email from many Google mailboxes and want domains and DNS done for you
• Works for agencies that create client mailboxes in bulk through an API

Look elsewhere if

• Skip it if you want a try first, as there is no free plan or trial
• Pricey if you grow: 10 mailboxes are $39, 30 are $99, 100 are $299
• Watch out: Google Workspace mailbox pricing rises after the first year
• Watch out: API access is on Pro only, and the prices shown are monthly while quarterly and yearly tabs differ
• Not for you if you want to write or send campaigns, since it is mailbox infrastructure only

Premium Inboxes

• You supply the domains; the site does not list domain purchase in the price.
• Both plans start with a minimum order of 30 inboxes.
• It provides mailboxes only; you need a separate sequencer to send campaigns.
• Account manager, Slack channel and 24-hour monitoring come only with the $4.50 tier.

Zapmail

• The listed prices are monthly; the page also has quarterly and yearly tabs, and its description says annual plans start from $2.50 per inbox.
• Google Workspace mailbox pricing rises after the first year, and mailboxes that have completed a year are charged at the updated price.
• It supplies mailboxes and domains only; campaigns are sent from a separate outreach tool.
• API access is on the Pro plan only; volume pricing for larger senders is by talking to sales.

Premium Inboxes

Google Workspace and Microsoft 365

Inboxes are business accounts on either provider, and the pricing page has a toggle for each.

Technical setup handled

The vendor says it configures DNS with SPF, DKIM and DMARC, creates the inboxes, sets up profiles and enables warmup.

Sequencer upload

Inboxes are uploaded directly to the sequencer. The site lists Instantly, Smartlead, Apollo, Lemlist, Reply.io and Bison.

Unlimited replacement inboxes

Both plans include replacement inboxes when one is lost or flagged, with a priority queue on the higher plan.

Slack support channel

The higher plan adds a dedicated Slack channel and account manager, and the site says the founder joins customer channels.

Infrastructure calculator

A calculator turns a daily send volume into a number of inboxes, domains and a monthly cost.

Zapmail

Automated mailbox setup

Creates Google Workspace mailboxes, sets DNS records and connects them to an outreach tool. The site gives an average setup time of 5 minutes.

Domains

Customers can bring their own domains or buy new ones, and each workspace holds one domain to keep sending reputations separate.

Pre-warmed mailboxes

A separate pre-warmed option is sold with domains included, starting from $6 per mailbox, to skip the first 3 to 4 weeks of warm-up.

ZapShield

Daily blacklist monitoring at $3 per domain a month, with a free replacement domain if one is listed.

Deliverability test and AI Insights

Monthly credits for inbox placement tests and AI-generated insights are included on every plan.

API

An API for creating mailboxes and domains from another product is included on the Pro plan.

Premium Inboxes

• Start Up$3.50

  per inbox / month, for 1 to 249 inboxes

  No monthly commitment, dashboard, full technical setup, upload to your sequencer and unlimited replacement inboxes. Orders start at 30 inboxes.

• Insured Infrastructure$4.50

  per inbox / month

  Adds a dedicated account manager and Slack channel, advanced analytics, priority support and build queue, and 24-hour monitoring.

Zapmail

• Starter$39

  per month for 10 Google Workspace mailboxes, billed monthly

  Extra mailboxes at $3.50 each; 3 deliverability test credits and 3 AI Insights credits a month; standard support.

• Growth$99

  per month for 30 Google Workspace mailboxes, billed monthly

  Extra mailboxes at $3.25 each; 10 deliverability test credits and 10 AI Insights credits a month; standard support.

• Pro$299

  per month for 100 Google Workspace mailboxes, billed monthly

  Extra mailboxes at $3.00 each; 30 deliverability test credits and 30 AI Insights credits a month; priority support and API access.

Premium Inboxes

No public discounts listed.

Zapmail

• Annual discount

  Yearly billing, 2 months free

  The pricing page's billing switch labels the yearly option as 2 months free and shows quarterly billing as well. Those prices are not shown in the default monthly view.