Entra ID sync
People details are synced from your Entra ID (Azure AD) directory. When someone's job title changes, their signature follows.
MICROSOFT 365
Manage Microsoft 365 signatures from one place
Zeyl adds your company signature on the server to every email sent through Exchange Online. Nobody on your team has to install or configure anything.
HOW IT WORKS
The signature is added as the email leaves
Zeyl sets up a mail flow rule and an outbound connector in Exchange Online. Outgoing mail passes through the Zeyl gateway, the signature is added on the server, and the message returns to Microsoft 365 to continue on its way.
Loop protection makes sure a processed message is never processed twice. Zeyl does not read or store the content of your email; it only adds the signature.
- 01
Design your signature
Pick a template in the signature studio or enter your website address; Zeyl scans your logo and colors to build a starting design.
- 02
Connect Microsoft 365
An admin with the Exchange Administrator role who can consent on behalf of the organization approves the connection. The rule and connector are created automatically.
- 03
Try it on yourself first
Choose the domain and start the rollout in “only me” mode. Check how the signature looks on the messages you send.
- 04
Roll it out to everyone
When you are happy with the result, switch the rollout to “everyone”. From then on, all outgoing mail on that domain carries the signature.
CENTRALIZED CONTROL
One design, the right details for every person
Instead of waiting for each employee to set up a signature, you design it once. Fields such as name, job title and phone number are filled in from the directory for each person, so signatures look consistent and still feel personal.
Changes in the studio are saved to a draft automatically. When you click Publish, the new signature goes live and users do not have to do a thing.
New hires included automatically
A new employee added to the directory sends their very first email with the company signature.
Edit with Zeyl AI
Describe a change, such as “add our address and take the colors from the logo”, or upload an image. Every change can be undone.
CROSS-DEVICE CONSISTENCY
Outlook, mobile or the phone's mail app: it doesn't matter
Because the signature is added on the server, the email app doesn't matter. Outlook for Windows, Mac and the web, Outlook mobile and the phone's built-in mail app all send the same signature, as does any email that goes through Exchange.
There is no add-in, no agent and no user setting. A quick reply from a salesperson's phone looks as polished as a proposal sent from a desktop.
Have your signature ready in minutes.
Open a free account; connect Microsoft 365 or Google Workspace for your team.
STAGED ROLLOUT
Turn it on per domain and start small
Zeyl manages each domain as its own property. If you run several brands or domains, you can turn each one on or off separately and move each rollout forward at its own pace.
In “only me” mode, only the account that set up the connection gets the signature. You see the design on real messages, then switch to “everyone” with a single setting.
SECURITY AND PERMISSIONS
Only the permissions it needs, and a clean way out
Zeyl asks for two permissions: Exchange.Manage to create the mail flow rule, and User.Read.All to read profile fields such as name, job title and phone number. They are granted by an admin with the Exchange Administrator role who can consent for the organization.
When you remove Zeyl, the mail flow rule and the app registration are deleted, and your mail flow returns to how it was before Zeyl.
Content is never read
Zeyl does not read or store the content of your email; it only adds the signature.
Loop protection
Processed messages are marked and never processed again.
TEAM CAPABILITIES
A signature that works for every team
The bottom of the hundreds of emails your company sends each day is one of its most viewed spaces. With Zeyl's modules, different teams can put that space to work for their own goals.
Marketing
Schedule the banner under the signature by team and date, and track clicks with go.zeyl.io short links.
Sales
Add a meeting or demo link to every message with a call-to-action button.
Legal
Add your organization's legal notice to everyone's signature. Because it is added on the server, users cannot delete it.
Customer success
Put a one-click survey in the signature: satisfaction faces, NPS (0 to 10) or yes/no.
NATIVE SOLUTION VS ZEYL
What Microsoft 365's built-in signature options leave open
Microsoft 365 offers two ways to handle signatures: each user sets their own in Outlook, or an admin writes an Exchange rule with hand-coded HTML. The first leaves consistency up to employees; the second has no visual designer and means editing code every time something changes.
Zeyl fills the gap between the two: a visual studio, personal details from the directory, staged rollout per domain, scheduled banners, click tracking and surveys in the signature. Setup still relies on Microsoft 365's own rule and connector framework.
PRICING
Clear, simple pricing
The Personal plan is free: design your signature, then copy or download it. The Microsoft 365 connection, campaigns and surveys are part of the Team plan: €9 per month plus €1 per person. Larger organizations can request an Enterprise quote.
You can try the Team plan with Microsoft 365 for 5 days. A card is required up front and the trial covers up to 25 people. Payment is in euros.
Frequently asked questions
Do employees need to install anything in Outlook?
No. The signature is added on the server; there is no add-in, agent or user setting. Employees keep sending email the way they always have.
Who can set it up?
An admin with the Exchange Administrator role who can consent on behalf of the organization. After consent, the mail flow rule and outbound connector are created automatically.
Does Zeyl read our email?
No. As a message passes through the Zeyl gateway, only the signature is added; the content is not read or stored.
Will emails sent from phones get the signature too?
Yes. Whether it's Outlook mobile or the phone's built-in mail app, every message sent through Exchange gets the signature.
Can I test it before rolling it out to everyone?
Yes. In “only me” mode, only your messages get the signature. When you are satisfied, switch to “everyone”.
What happens when someone new joins?
Details are synced from your Entra ID directory. A new employee is included automatically once they are added to the directory.
We run Exchange on-premises. Does Zeyl work?
Zeyl's Microsoft 365 setup is built for Exchange Online. Organizations running their own Exchange server can design a signature and copy it as HTML.
What happens if I remove Zeyl?
The mail flow rule and app registration are deleted and your mail flow returns to how it was. Removal also deletes the Zeyl data stored for your organization.
Related pages
Google Workspace signatures
Zeyl writes your company signature into each employee's Gmail signature setting in Google Workspace. No one has to copy and paste anything by hand.
Read more →
Email disclaimers
Zeyl adds your organization's disclaimer to everyone's signature from one place. You write it once instead of relying on people to copy it or remember it.
Read more →
Signature campaigns
Your company sends hundreds of emails a day. With Zeyl you add a banner under the signature and plan, from one place, which team shows what and when.
Read more →Let every e-mail carry your brand.
Design it in minutes, publish it to your team.