Inbox providers · 19th of 52 · 2026

ColdSend pricing and review

coldsend.pro · Flat-rate unlimited inboxes · legal entity: Grappes IT Services FZCO (Dubai, UAE) · Visit site ↗

Deliverability7/27
Inbox choice5/16
Sending9/15
API & AI7/7
Buying terms6/10
Setup cost23/25

19th of 52 inbox providers

Why it ranks here

Sells Microsoft 365 inboxes. A working setup of 30 inboxes with warm-up and a sequencer costs $127 a month, one of the lowest in the index. Inboxes arrive pre-warmed, so you can start sending sooner. Deliverability: automatic SPF/DKIM/DMARC. It has a public API and an official MCP server for automation.

Key features

Automatic SPF/DKIM/DMARC
Microsoft 365 inboxes
A built-in sequencer
A unified inbox
A public API

Best for

Teams that set up inboxes from code or an AI agent.

Pricing

Per inbox: $0.99
At volume: $0.30
Cheapest plan: $99/mo

Monthly billing. Pricing page ↗ · checked Oct 31, 2026

Scorecard

DeliverabilityWhat protects sender reputation without extra tools or subscriptions.	7/27
Inbox choiceWhich types of inboxes and domains you can get in one place.	5/16
Sending and workflowWhether you can run and manage campaigns without another tool.	9/15
API and AI agentsHow easy it is to automate the setup from code or an AI assistant.	7/7
Buying termsHow much you risk before you know it works.	6/10
Cost of a working setupWhat 30 inboxes plus warm-up and a sequencer cost per month — the cheaper, the more points.	23/25
Total	57/100	17 of 20 conditions checked

The evidence

Every condition, what the vendor's own site says, and where.

Deliverability
	Ongoing warm-up included in the priceNot offeredWarmup tools used to fake this with reciprocal opens. We do not.	source ↗	0/6
	Pre-warmed inboxesConfirmedIPs come pre-warmed, but your domain still needs a reputation.	source ↗	2/2
	Automatic SPF, DKIM and DMARC setupConfirmedWe handle SPF, DKIM and DMARC	source ↗	5/5
	Inbox placement or spam testsNot found on site		0/5
	Replacement of burned inboxes or domainsNot offeredIf you ever burn a domain, simply swap in a new one, and create new mailboxes	source ↗	0/5
	Dedicated IP optionNot offeredYou are not tied to a single IP. ACS allocates IPs dynamically based on current reputation and load.	source ↗	0/4
Inbox choice
	Google Workspace inboxesNot offeredUse the Gmail and Google Workspace accounts your team already has. No need to buy new inboxes or migrate data.	source ↗	0/5
	Microsoft 365 / Outlook inboxesConfirmedWe are built on top of Azure Communication Services which provisions well-reputed, US-based IPs	source ↗	5/5
	Private SMTP/IMAP inboxesNot offeredOur infrastructure is Azure Communication Services (ACS). It is not SMTP.	source ↗	0/3
	Domain purchase inside the productNot found on site		0/3
Sending and workflow
	Built-in campaign sequencerConfirmedCOLD EMAIL SEQUENCER + INFRASTRUCTURE, IN ONE PLATFORM	source ↗	5/5
	Unified inbox for repliesConfirmedReplies land in ColdSend's unified inbox. You see interested leads, unsubscribe requests, and bounces in one place.	source ↗	4/4
	Export to other sending toolsNot offeredBulk export your connected inboxes from ColdSend and import them into Instantly via CSV	source ↗	0/4
	Multi-client workspaces or white-labelNot found on site		0/2
API and AI agents
	Public APIConfirmedFull API and MCP access included.	source ↗	4/4
	Official MCP serverConfirmedConnect Claude Code or OpenCode through MCP.	source ↗	3/3
Buying terms
	Prices published on the siteConfirmedStart at $99/mo with one domain.	source ↗	4/4
	Free plan, free trial or money-back guaranteeNot offeredExcept where mandatory consumer law requires otherwise, all fees are non-refundable.	source ↗	0/4
	Monthly billing availableConfirmedPer month $99	source ↗	2/2
Cost of a working setup
	Cost of a working setup (30 inboxes)Calculated30 inboxes × $0.99 = $29.70 + $97 — Instantly Hypergrowth for warm-up and sending (the inbox price includes neither) = $127/month	how ↗	23/25

Alternatives to ColdSend

MailOptimal83/100 · $2/inbox

Sender Pools60/100 · $40/mo

Zapmail63/100 · $3.90/inbox

SkySenders62/100 · $2.95/inbox

Inframail59/100 · $0.37/inbox

Frostmailer51/100 · $3.38/inbox

Where we checked

Only the vendor's own public pages. We do not use third-party reviews or ratings. Something wrong? Send a correction.

Badge for ColdSend

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<a href="https://coldemailindex.com/review/coldsend-pro/"><img src="https://coldemailindex.com/badges/coldsend-pro.svg" alt="ColdSend: 57/100 in the Cold Email Index 2026" width="240" height="64"></a>

Every fact is from the vendor's own site, same rules for everyone · Method · Disclosure