Email signature software, compared
Five email signature platforms, what each one is built for, and where Signatoro fits beside them.
Signatoro is one email signature that works in every mail client, priced by the size of the company, and the five platforms compared here are Exclaimer, WiseStamp, Newoldstamp, CodeTwo and Opensense. Each of those five applies signatures centrally and bills per person or per signature, which is what a company with an IT team and a marketing team is buying. Signatoro charges by company size, $9 up to 5 people, $19 up to 15 and $49 up to 50, plus $1.50 a month per extra member, and stays outside the mail path, which suits a company of 50 people or fewer.
Where the signature is applied
Signatoro renders the signature and the person pastes it into their own mail client once, so no message passes through Signatoro on its way out. The platforms compared here apply signatures centrally, through a mail relay, a client add-in or a directory sync, which is how a company stamps every message without asking anyone to paste anything.
How the bill is shaped
Signatoro charges a flat monthly price by company size, $9 up to 5 people, $19 up to 15 and $49 up to 50, with the owner included, plus $1.50 a month for each extra member. Each page below records what that alternative charges and what it requires, read from the vendor’s own pricing page on the date the page names.
What a company gives up either way
Campaigns and click analytics are what Exclaimer, WiseStamp, Newoldstamp, CodeTwo and Opensense build, and a company that runs marketing through its email signatures should choose one of them for it. Signatoro is built for the company that wants one signature everyone follows, changed once by an owner.
Which one fits your company
| Alternative | Signatoro | The alternative |
|---|---|---|
| Exclaimer | Signatoro fits when a company is 50 people or fewer, wants a flat price set by its size, and would rather nothing about its mail routed through a third party's servers. | Exclaimer fits when a company runs signature banner campaigns and needs click analytics and centralized governance across an organization large enough that Exclaimer's per-user price and ten-user minimum are not the constraint. |
| WiseStamp | Signatoro fits when a company is 50 people or fewer, wants a flat price set by its size, and would rather nothing about its mail signing routed through a vendor's servers even optionally. | WiseStamp fits when a company wants signatures provisioned automatically from its own identity provider, plus campaign analytics and surveys run by a marketing team without filing IT tickets, and is prepared for a base fee plus a charge for every employee to get it. |
| Newoldstamp | Signatoro fits when a company is 50 people or fewer, wants a flat price by company size rather than per signature, and would rather nothing about its mail signing depend on an active subscription elsewhere. | Newoldstamp fits when a company wants banner campaigns and click analytics run from a central dashboard, and is comfortable paying per signature each month for that. |
| CodeTwo | Signatoro fits when a company is 50 people or fewer, wants a flat price by size with no ten-license floor, and would rather nothing about its mail routed through a relay, even one hosted on Microsoft's own infrastructure. | CodeTwo fits when 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. |
| Opensense | Signatoro fits when a company is 50 people or fewer, wants to pay for what it actually uses rather than a $500 a month floor, and would rather nothing about its mail signing routed through a vendor's servers. | Opensense fits when a company is running signature banner campaigns it wants to A/B test and target by department, account or stage, and is already spending enough that Opensense's $500 a month minimum is not the deciding factor. |
What each alternative is
Exclaimer
Exclaimer is a cloud email signature platform that applies signatures to mail as it passes through Exclaimer's own servers, built for IT and marketing teams running centralized governance, banner campaigns and click analytics.
Signatoro compared with ExclaimerWiseStamp
WiseStamp is a centralized email signature platform that syncs daily from a company's own identity provider and applies signatures through a client-side add-in, an optional server-side mode, or both, built for marketing teams to manage company-wide without filing IT tickets.
Signatoro compared with WiseStampNewoldstamp
Newoldstamp is a centrally managed email signature platform billed per signature a month, with banner campaigns and analytics built in, trusted by over 8,000 businesses by its own count.
Signatoro compared with NewoldstampCodeTwo
CodeTwo is 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.
Signatoro compared with CodeTwoOpensense
Opensense is a server-side email signature platform that applies signatures centrally with "touchless onboarding," sold through a demo request with a $500-a-month minimum on every tier, built for marketing and IT teams running banner campaigns with recipient-level analytics.
Signatoro compared with OpensenseQuestions people ask before choosing
Should a company switch to Signatoro, or run it alongside its current signature tool?
A company switches to Signatoro when it wants one flat price and one brand everyone follows, and the switch happens one mailbox at a time: the other platform stops signing that mailbox, and the person pastes their signature into it. Running Signatoro on a mailbox that a server-side platform still signs puts two signatures on the same message, which is why each comparison page below moves a mailbox across in one step.
What is the cheapest email signature software for a small company?
Signatoro charges a flat monthly price by company size - $9 up to 5 people, $19 up to 15 and $49 up to 50 - with the owner included, plus $1.50 a month for each extra member. The platforms compared here bill per person or per signature, and several of them set a floor, which is what makes the arithmetic turn against a company of 50 people or fewer.
Which email signature tool works without an IT team?
Signatoro works without an IT team: an owner sets the logo, layout, color, font, review badge and booking button once, and each person pastes their signature into Gmail, Outlook, Apple Mail, iPhone Mail or Zoho Mail following the guide for their mail app. The five platforms below deploy centrally, which is faster across hundreds of mailboxes and assumes somebody administers the mail system.
What happens to a signature when a company stops paying?
A signature made with Signatoro keeps working after a company stops paying, because it lives in each person’s own mail client, and new copies carry a small "Get my signature" line. Each comparison page below records what the other platform does when a subscription lapses, read from that vendor’s own documentation.
Sources
The rows and the cards on this page quote each competitor’s own comparison page, where every figure was read on the vendor’s own site and dated. Open a comparison page for the date and the source behind any number it carries.