CodeTwo Alternative: Signatoro

CodeTwo signs mail through what its own site calls "secure relay technology" hosted on Microsoft Azure, or an Outlook add-in, priced per user with a ten-license minimum. Signatoro is the agentic email signature platform: one consistent signature for a company's people and its AI agents, with each agent identified the way the company decides and, on the Up to 15 plan or larger, the company's legal footer on every signature. Here is how the two compare.

Signatoro is the agentic email signature platform: a company saves its signature once, and its people and every AI agent it connects use the same one, with each agent identified the way the company decides and, on the Up to 15 plan or larger, the company's legal footer under every signature. CodeTwo is a Microsoft 365 email signature platform that signs mail through a relay hosted on Microsoft Azure or an Outlook add-in, priced per user with a ten-license minimum.

Choose Signatoro

a company's email comes from its people and several AI agents, it may add or switch agents, and it wants one consistent signature on all of it, with each agent identified the way the company decides and, on the Up to 15 plan or larger, its legal footer on every agent's email; Signatoro fits companies of 50 people or fewer, at a flat price by size with no ten-license floor and no relay.

Choose CodeTwo

a company runs entirely on Microsoft 365, wants signature marketing campaigns with click tracking and one-click satisfaction surveys, and needs signatures that sync from Entra ID automatically.

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Last updated 30 September 2026

Signatoro and CodeTwo at a glance

Signatoro

Signatoro is the agentic email signature platform: save your signature once, and your people and every AI agent you connect use the same one. Each person's signature goes into Gmail, Outlook or Apple Mail with a guide for each mail app, or into Zoho Mail in one click, and each AI agent, from Claude and ChatGPT to n8n and the company's own code, connects to Signatoro over MCP or the API. Signatoro is built for companies whose email comes from people and several AI agents at once: each agent connects over MCP or the API and fetches the saved signature when asked to sign, or on every email once its instructions say so, so a company that adds, replaces or switches agents keeps one consistent signature without pasting it anywhere again. Signatoro is free for one person and charges a company one flat monthly price set by its size; AI agents come on top and use no seat.

CodeTwo

a Microsoft 365 email signature platform that applies signatures through what it calls "secure relay technology" or an Outlook add-in, priced per user with a ten-license minimum, trusted by over 140,000 companies by its own count

CodeTwo Email Signatures 365 is a Microsoft 365 signature platform, trusted by over 140,000 companies according to its own site (read 30 September 2026). It applies signatures through what it calls "secure relay technology" that "reroutes your emails through CodeTwo services hosted on Microsoft Azure," through its own Outlook add-in, or both together. One plan includes every feature, priced per user with volume discounts, with a minimum of ten licenses stated on CodeTwo's own pricing page; at that minimum, its own calculator shows $1.22 a user a month billed yearly, $146.88 a year total ($12.24 a month), with a 14-day free trial and a one-month minimum subscription period. CodeTwo also sells a separate on-premises product, CodeTwo Email Signatures On-prem, released 22 July 2025 the same day its older Exchange Rules Pro was discontinued, for companies that don't want mail routed through the cloud at all.

Side by side

	Signatoro	CodeTwo
How does the signature get onto everyone's mail?	Signatoro never sits in the mail path. Each person pastes their finished signature into their own mail app once; on Company it arrives in their invitation. The mail keeps going the way it already went, with nothing of Signatoro's in between.	CodeTwo applies signatures through what its own site calls "secure relay technology" that "reroutes your emails through CodeTwo services hosted on Microsoft Azure," or directly in Outlook through its own add-in, or both together (CodeTwo's own site, read 30 September 2026).
Can each AI agent sign as itself, with an AI disclosure line?	Signatoro lets a company decide how its AI agents identify themselves: an agent signs as the person it works for, by default with a line such as "Sent by Ada, my AI assistant", or as itself with its own name and role, and on Company the owner can require one disclosure line for every agent. A key or connection made for one agent always signs as that agent, so two agents with keys of their own each sign as themselves, even from one mailbox.	CodeTwo's compliance page says CodeTwo "will help you add your AI disclaimer to all emails," and its signature rules can target specific senders, so a company can give an agent's mailbox its own signature or disclaimer. CodeTwo's pages, read 14 October 2026, describe no setting for an AI agent to sign as itself.
Does the company's legal footer reach email its AI agents send?	On the Up to 15 plan or larger, a Signatoro company writes one compliance footnote, such as a confidentiality notice or a registered-office line, that goes under every person's signature and every company AI agent's signature, starting from US, UK, EU, Canada, healthcare or finance wording; the Up to 50 plan also keeps a history of who changed the footnote, when, and what it said.	Yes, for mail routed through CodeTwo. CodeTwo's cloud mode adds signatures and disclaimers "in the cloud after a message is sent," and its compliance page says a disclaimer can be added to "all your outgoing emails"; the cloud mode covers users whose Microsoft 365 mail the CodeTwo transport rule routes through CodeTwo (codetwo.com, read 14 October 2026).
What happens when the company switches AI agents?	Signatoro keeps a company's signature when it switches AI agents or providers: the signature is saved on Signatoro, not inside any one agent, so a new agent connected over MCP or the API sends the same signature from its first email, and an edit on Signatoro reaches every agent's next email.	An agent that sends from a Microsoft 365 mailbox routed through CodeTwo's cloud mode gets that mailbox's signature and disclaimers whichever agent it is. CodeTwo's pages, read 14 October 2026, describe no separate setup for each AI agent.
What happens if the company stops paying?	Signatoro applies no signature itself; it only generates the text and image a person already pasted in. So if a company stops paying, nothing already pasted into a mail app breaks, and the next signature built reverts to the free version with the small Signatoro link.	CodeTwo's license is assigned to each user whose mail is routed through its relay or who uses its Outlook add-in, so signing stops once that subscription lapses (CodeTwo's own pricing page, read 30 September 2026).
What does it cost for a ten-person company?	Signatoro costs $16.50 a month for ten people and $19 for fifteen: $9 up to 5 people, $19 up to 15 and $49 up to 50, plus $1.50 per extra member.	CodeTwo's own pricing calculator shows $1.22 a user a month billed yearly at ten licenses, $146.88 a year total ($12.24 a month); the same per-user rate applies at fifteen licenses, $220.32 a year ($18.36 a month) (CodeTwo's own pricing page, read 30 September 2026).
Is there a minimum number of licenses?	Signatoro has no minimum headcount on any plan: the free version covers one person, and the Company price applies from the first person.	Yes. CodeTwo's own pricing page states plainly, "Minimum number of licenses is 10," and its manual adds it is "not possible to order fewer licenses" than that (CodeTwo's own site, read 20 September 2026).
Does it run marketing campaigns or satisfaction surveys?	Signatoro builds and hosts the signature itself; it does not run banner campaigns or track clicks on them.	CodeTwo's own site describes scheduled email marketing campaigns tracked in web analytics tools and one-click customer satisfaction surveys built into signatures.
Does automated or AI-sent mail get the signature too?	Signatoro gives each AI assistant or company agent its own MCP connection or API key to fetch the saved signature before every email, signing as the person or as the agent with an AI disclosure line, and a CRM, a sequencer or the company's own code uses the same API, without routing that mail through Signatoro.	Yes, on CodeTwo's cloud/relay mode, because the signature is applied to mail as it is routed through CodeTwo's own Azure-hosted service regardless of what sent it; the Outlook add-in mode depends on the sending tool using Outlook itself.

CodeTwo pricing

CodeTwo sells one plan with every feature, as a monthly or yearly subscription, priced per user with volume discounts; the yearly plan saves around 10%. The minimum is ten licenses, and a license goes to each user or shared mailbox whose mail CodeTwo signs. A 14-day free trial needs no credit card, and the shortest subscription is one month. Prices below are CodeTwo's own table and calculator, before tax.

Plan	Price	Details
10 licenses	$1.22 per user a month billed yearly, $1.36 billed monthly	The minimum order: $146.88 a year on the yearly plan.
15 licenses	$1.22 per user a month billed yearly	$220.32 a year, from CodeTwo's calculator.
25 licenses	$1.22 per user a month billed yearly, $1.36 billed monthly	The same rate as ten licenses.
50 licenses	$1.21 per user a month billed yearly, $1.34 billed monthly	The first volume discount in CodeTwo's table.
100 licenses	$1.11 per user a month billed yearly, $1.23 billed monthly	$1,328.40 a year, from CodeTwo's calculator.
500 licenses	$0.73 per user a month billed yearly, $0.81 billed monthly	The lowest listed rate.
Above 500	Quotation on request	CodeTwo quotes larger orders directly.

Signatoro's Company price is set by company size, from the first person: $9 up to 5 people, $19 up to 15 and $49 up to 50, plus $1.50 a month for each extra member. Ten people cost $16.50 a month and fifteen cost $19.

When to choose Signatoro instead of CodeTwo

Built for a company's AI agents

Signatoro is built for a company whose email comes from people and several AI agents at once. Each agent, from Claude and ChatGPT to n8n and the company's own code, connects to Signatoro over MCP or the API and fetches the saved signature when asked to sign, or on every email once its instructions say so, so a company that adds or switches agents keeps one consistent signature. On the Up to 15 plan or larger, Signatoro puts the company's legal footer under every company AI agent's signature as well as every person's, and each agent signs as the person it works for, with an AI line, or as itself, as the company decides. CodeTwo works on the same email inside Microsoft 365: its cloud mode stamps signatures and disclaimers, including an AI disclaimer, on mail routed through CodeTwo, and CodeTwo's own pages, read 14 October 2026, describe no per-agent identity. For a regulated firm, a brand-conscious company, or one preparing for AI-disclosure rules such as Article 50 of the EU AI Act, Signatoro gives peace of mind that every agent's email carries the brand, the footer and the disclosure the company chose. A Signatoro disclosure line or footnote states what the company chose to say; it does not by itself make an email compliant with any law.

Nothing routes through Signatoro

CodeTwo names its own mechanism outright: "secure relay technology" that "reroutes your emails through CodeTwo services hosted on Microsoft Azure," alongside an Outlook add-in that inserts signatures directly as a person types (CodeTwo's own site, read 30 September 2026). Signatoro takes neither path: a person pastes their finished signature from Signatoro into their own mail app once, and Signatoro never sees that mail again. CodeTwo's relay depends on CodeTwo's own Azure-hosted systems staying connected and paid for; a signature already pasted into a mail app depends on nothing Signatoro operates.

The ten-license floor

CodeTwo's own pricing page states plainly, "Minimum number of licenses is 10," and its manual adds it is "not possible to order fewer licenses" than that (CodeTwo's own site, read 20 September 2026). A company with six or eight people is billed for ten licenses regardless, at CodeTwo's own calculator rate of $1.22 a user a month billed yearly, $12.24 a month total. Signatoro's Company price has no license floor: six people cost $10.50 a month and eight cost $13.50.

When to choose CodeTwo instead of Signatoro

Disclaimers on all Microsoft 365 mail, whatever sent it

A Microsoft 365 company that wants one disclaimer, an AI disclaimer included, on every email routed through CodeTwo's cloud mode, whichever app, device or tool sent it, is who CodeTwo's compliance features are built for: CodeTwo's own compliance page says it adds disclaimers to "all your outgoing emails" (read 14 October 2026). Signatoro reaches an AI agent that sends from its own servers, its own agent mailbox or an email API, which never passes through a Microsoft 365 mailbox, but only once that agent is connected to Signatoro over MCP or the API; a tool nobody has connected sends mail with no Signatoro signature at all.

Marketing campaigns and satisfaction surveys tracked centrally

A Microsoft 365 IT or marketing team that wants to schedule signature marketing campaigns tracked in web analytics tools and run one-click customer satisfaction surveys from signatures is who CodeTwo's own features are built for (CodeTwo's own site, read 30 September 2026). What that costs is CodeTwo's own shape: a per-user price on top of a ten-license minimum, $1.22 a user a month billed yearly at that minimum, that runs as long as the subscription does. Signatoro has no marketing campaigns and no satisfaction surveys built in.

Signatures synced automatically from Entra ID

A company already running Microsoft Entra ID that wants contact details and photos kept current in every signature without anyone editing it by hand is who CodeTwo's Entra ID sync is built for; CodeTwo's own site states it caches attributes every 20 minutes. The price of that is a relay dependency: CodeTwo's sync depends on CodeTwo's own systems staying connected to the company's Entra ID tenant. Signatoro has no directory sync; an owner invites each new person, and the invitation arrives with their signature already built.

A competitive per-user rate, once past the ten-license floor

A company that already needs ten or more licenses, and wants CodeTwo's relay, Entra ID sync and campaign features together, gets a genuinely competitive rate for it: CodeTwo's own calculator shows $1.22 a user a month billed yearly, $12.24 a month total at ten licenses and $18.36 a month at fifteen. Both are under Signatoro's $19 a month for fifteen people. What that costs is the same relay dependency as everywhere else on this page: the price is competitive, but the mail still routes through CodeTwo's own servers to get it. Signatoro's flat price does not always win on the number alone.

Questions about Signatoro and CodeTwo

Which is better for a company that uses several AI agents, CodeTwo or Signatoro?

Signatoro is built for a company whose email comes from people and several AI agents: each agent connects to Signatoro over MCP or the API and fetches the saved signature when asked to sign, or on every email once its instructions say so, signing as the person with an AI line or as the agent, so adding or switching agents keeps one consistent signature. CodeTwo signs Microsoft 365 mail routed through its cloud mode, so an agent sending from a routed mailbox gets that mailbox's signature and disclaimers, and CodeTwo's pages, read 14 October 2026, describe no setting for an agent to sign as itself. A company that wants each AI agent identified its own way, wherever the agent sends from, has the clearer fit in Signatoro; a company whose agents all send through Microsoft 365 mailboxes and that relies on CodeTwo's Entra ID sync has a reason to stay with CodeTwo.

Can CodeTwo make AI agents identify themselves in email?

CodeTwo's compliance page says CodeTwo "will help you add your AI disclaimer to all emails," and CodeTwo's signature rules can target specific senders, so a company can give an agent's mailbox its own signature or disclaimer; CodeTwo's pages, read 14 October 2026, describe no setting for an AI agent to sign as itself. Signatoro lets a company decide how its AI agents identify themselves: an agent signs as the person it works for, by default with a line such as "Sent by Ada, my AI assistant", or as itself with its own name and role, and on Company the owner can require one disclosure line for every agent. A key or connection made for one agent always signs as that agent, so two agents with keys of their own each sign as themselves, even from one mailbox.

Does the legal footer appear on email AI agents send?

CodeTwo adds signatures and disclaimers in the cloud after a message is sent, so mail an agent sends from a Microsoft 365 mailbox routed through CodeTwo carries them (codetwo.com, read 14 October 2026). On the Up to 15 plan or larger, a Signatoro company writes one compliance footnote, such as a confidentiality notice or a registered-office line, that goes under every person's signature and every company AI agent's signature, starting from US, UK, EU, Canada, healthcare or finance wording; the Up to 50 plan also keeps a history of who changed the footnote, when, and what it said. A Signatoro footnote or disclosure line states what the company chose to say; it does not by itself make an email compliant with any law.

What does CodeTwo cost for a small company?

CodeTwo sells one plan with every feature included, priced per user with volume discounts, but requires a minimum of ten licenses; at that minimum its own pricing calculator shows $1.22 a user a month billed yearly, $146.88 a year total, $12.24 a month, and the same rate applies at fifteen licenses, $220.32 a year, $18.36 a month (CodeTwo's own pricing page, read 30 September 2026). Signatoro's Company plan, by comparison, is a flat $9 a month for up to 5 people with no license minimum, though CodeTwo's per-user rate can undercut Signatoro's price once a company is already at ten or more licenses.

What does Signatoro cost for a small company?

Signatoro is free for one person, with a small Signatoro link under the signature, and a flat monthly price for a company by size: $9 up to 5 people, $19 up to 15 and $49 up to 50, plus $1.50 a month for each extra member.

Does CodeTwo still sell an on-premises product?

Yes. CodeTwo sells a separate on-premises product, CodeTwo Email Signatures On-prem, released 22 July 2025 the same day its older Exchange Rules Pro was discontinued, for companies that don't want mail routed through the cloud at all (CodeTwo's own site, read 30 September 2026). Signatoro has never had a server-side or on-premises product; the paste-once mechanism is the only one it has ever offered.

How does CodeTwo get the signature onto everyone's mail?

CodeTwo applies signatures through a secure relay hosted on Microsoft Azure, an Outlook add-in, or both together (CodeTwo's own site, read 30 September 2026). Signatoro never sits in the mail path; each person pastes their finished signature into their own mail app once; on Company it arrives in their invitation.

What happens if the company stops paying for CodeTwo?

CodeTwo's license is assigned per user whose mail is routed through its service or who uses its Outlook add-in, so signing stops once that subscription lapses. Signatoro applies no signature itself; it only generates what a person already pasted into their own mail app, so nothing already pasted breaks if a company stops paying Signatoro.

Should a company switch from CodeTwo to Signatoro, or run both?

A company running entirely on Microsoft 365 that wants signature marketing campaigns, satisfaction surveys and Entra ID sync has a real reason to keep CodeTwo, and Signatoro does not do any of those three things. A company whose main complaint is a per-user bill or routing mail through a relay has a real reason to move to Signatoro's flat Company price instead. The two are not built to run side by side on the same mailboxes, since both would be adding a signature to the same mail.

Does either tool sign mail sent by a CRM or an AI assistant automatically?

Signatoro does, once the tool is connected over MCP or its API: each AI assistant, company agent, CRM or sequencer fetches the saved signature at send time, signing as the person or as the agent with an AI disclosure line. CodeTwo also does, on its cloud/relay mode, because the signature is applied to mail routed through CodeTwo's own service regardless of what sent it.

Signatoro against other alternatives

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Sources

CodeTwo's pricing is from codetwo.com/email-signatures/pricing, read 30 September 2026: one plan with all features, monthly or yearly, the line "Minimum number of licenses is 10," a one-month minimum subscription period, a 14-day free trial with no credit card, licenses assigned per user or shared mailbox whose mail is routed through CodeTwo or who uses its Outlook add-in, and the per-user pricing table (yearly and monthly, USD, net of tax) at 10, 25, 50, 100 and 500 licenses, with a quotation above 500. The ten-, fifteen- and hundred-license totals ($146.88, $220.32 and $1,328.40 a year) are the page's calculator output at those counts, read the same day; prices were first read 20 September 2026 and were unchanged on 30 September 2026. CodeTwo's deployment modes, its "140k+ companies" claim, and its marketing-campaign, web-analytics-tracking and CSAT-survey features are from codetwo.com/email-signatures/, read the same day; the "secure relay technology" quote is from the same page. The manual's note that it is "not possible to order fewer licenses" and the Entra ID sync interval (cached every 20 minutes) were read 20 September 2026. Its on-premises history - Exchange Rules Pro discontinued 22 July 2025, Exchange Rules 2016 and 2019 discontinued 9 June 2025, and CodeTwo Email Signatures On-prem released as the successor on 22 July 2025, still sold today - is from codetwo.com/email-signatures-on-prem/faq and codetwo.com/kb/exchange-rules-end-of-life/, read 30 September 2026. CodeTwo's disclaimer and AI facts were read 14 October 2026: codetwo.com/email-signatures/compliance-with-legal-regulations lists the EU AI Act among the rules disclaimers can help with and says CodeTwo "will help you add your AI disclaimer to all emails" and add disclaimers to "all your outgoing emails"; codetwo.com/email-signatures/central-and-automatic says "signatures can be added to specific senders" and "signatures are added in the cloud after a message is sent"; CodeTwo's knowledge-base article on who gets CodeTwo signatures says only users included in the CodeTwo Exchange transport rule have their mail routed through CodeTwo for cloud signatures. None of these pages, nor codetwo.com/email-signatures/, describes a setting for an AI agent to sign as itself or a separate setup for each AI agent. Signatoro's prices come from apps/web/config/company-bands.config.ts.