The #1 email signature platform built for Outlook - Microsoft Office 365 & Exchange

Seamlessly manage on-brand Outlook email signatures across your entire company. From 50 to 500,000+ team members. No matter your team size, get the most out of your email signatures.

Microsoft Gold Partner,
Microsoft (Office) 365 seamless integration,
and Azure cloud-based architecture

How does it work?

1
Create

Design on-brand email signatures for all your teams

Use HTML import to instantly generate professional, on-brand email signatures. Or choose the Drag & Drop Designer to create email signature templates based on your brand colors. No technical skills are required!
More about Signatures
2
Synchronise & Deploy

Built for Outlook, with Microsoft

Enjoy seamless integration & deployment on Outlook (Windows and Mac), Mobile & Outlook Online. Thanks to the synchronization with your directory (Azure AD, or Azure local), all your users' information is automatically and securely pre-filled.
Book a 1-1 demo
3
Enjoy

A seamless experience for your employees

Each time one of your employees creates an email, the email signature is automatically added and updated thanks to the Letsignit Add-in for Outlook. They can select their preferred signature before sending their email.

They can also benefit from different signatures for reply/forward and internal/external recipients are updated automatically.
More about the Outlook Add-in
4
Communicate & Measure

Make every email a marketing moment

1 to 1 emails are an effective way to multiply the impact of your marketing. With Letsignit, you can easily align every email signature across your organization to match your latest content or promotion.

The plus? The ability to share different messages depending on your recipients, whether a colleague or customer.
More about Campaigns

Loved by marketers, trusted by IT.

The sign you’ve been waiting for.
An email signature that makes everyone look good.
Fast integration
Letsignit integrates seamlessly with your favorite email & CRM tools. Give your team a tool they going to love, without the hassle. Plus, enjoy comprehensive onboarding and tool documentation.
Simple administration
Enjoy a tool that take the “admin” out of sysadmin. The best systems are the ones you don’t have to think about. Letsignit helps your team get more out of every email, without stealing precious time and energy from IT.
High-level security
Stay safe with industry-leading security. Email is personal. Letsignit uses cybersecurity best practices to keep your whole team safe on the web.
Fast integration
Letsignit integrates seamlessly with your favorite email & CRM tools. Give your team a tool they going to love, without the hassle. Plus, enjoy comprehensive onboarding and tool documentation.
Simple administration
Enjoy a tool that take the “admin” out of sysadmin. The best systems are the ones you don’t have to think about. Letsignit helps your team get more out of every email, without stealing precious time and energy from IT.
High-level security
Stay safe with industry-leading security. Email is personal. Letsignit uses cybersecurity best practices to keep your whole team safe on the web.
Native integrations built by Letsignit, with Microsoft.
Your data belongs to you
Not just anyone can install Letsignit. It takes a Global Admin to deploy the Letsignit App or the Add-in for Outlook. Once installed, Letsignit will pull user information from Azure Active Directory via the Microsoft Graph API. We’ll use that data to add the appropriate signature when composing an email.

Your email content never passes through Letsignit’s servers. Letsignit signatures are embedded into your email, but we never see what you type or send.
Your data are only yours
Not just anyone can install Letsignit. It takes a Global Admin to deploy the Letsignit App or the Add-in for Outlook. Once installed, Letsignit will pull user information from Azure Active Directory via the Microsoft Graph API. We’ll use that data to add the appropriate signature when composing an email.

Your email content never passes through Letsignit’s servers. Letsignit signatures are embedded into your email, but we never see what you type or send.

Don’t take our word for it.
More than 1 million people trust Letsignit with every email they send.

"Letsignit is: easy to integrate, easy to manage, easy for users, and easy to use.”
Alaa Eddine Elhimer
Tech Administrator
5,750 equipped employees
The effortless integration of Letsignit with Office 365 has resulted in a high adoption rate of the solution by our employees. The signatures are contextualized according to our campaigns, and their profiles have become a standard service of their Office account.
Guillaume Mikowski
CEO
145 equipped employees
When a new employee joins the company, I no longer have to worry about installing their email signature. I save a lot of time!
Cyril Darmouni
Associate Director
 
Read the success story
Perfectly integrated with the Microsoft 365 & Outlook platform, Letsignit perfectly meets the needs of large accounts with disconcerting simplicity!
Olivier Lanilis
ISV Lead
 
Letsignit has been an amazing partner for the Office Extensibility team. They not only helped design, but also were pioneers in building and testing solutions using our new Signature APIs and event-activated Outlook Add-ins.
Juan Balmori
Principal Product Manager
 
Deploying Letsignit to users and integrating it with Office 365 was very easy. The ability to sync specific groups from Office 365 is a nice feature.
Brian Menzel
CEO
 
Read the success story
Letsignit makes it easy to create campaigns and manage contact groups. Its link with Office 365 simplifies internal implementation and allows for tracking of user usage. The separation of signature and campaign creation enables fast updates, even with multiple entities.
Rachel Pallamidessi
Digital Communication Manager
 

Letsignit is supported & approved by Microsoft.

In addition to our Microsoft Gold Partner status, we have been working with Microsoft teams for nearly 10 years to constantly improve our GDPR & ISO compliant cloud offering, which is 100% integrated with the Microsoft environment :

This unique and privileged relationship with Microsoft allows us to offer the strongest technical and security guarantee on the market.

Email is personal.
That’s why security is our top priority.

Scalable
& secure
Highly scalable 100% cloud platform hosted on Microsoft Azure
Certified with ISO 27018 and ISO 27001,
the highest global standards for information and data security
Audit
& tests
Regular security audit & penetration tests
Learn more on security

Resource library

Dive deeper. Unlock the full potential of your email signatures.
Frequently
asked questions
1
Are email signatures deployed on all devices used by employees?

Yes, the solution has been designed to guarantee the display of your email signatures on all media: computer, tablet, mobile and web. No more display and format problems. Your collaborators' email signatures will always be optimal, whatever the device!

2
How is the solution deployed?

Once your project is launched, our team of experts will work with you to understand the scope you want to cover, your specific needs, and your expectations for the project launch. How many users do you want to equip? Which deployment mode suits you? What timeline do you want to keep?

You will then be accompanied throughout the deployment phases. It can take as little as a few business days!

If your organization has more than 500 people, you will benefit from our 'Large Accounts' support, which you can discover here.

3
Can my employees have multiple signatures available to them?

With our "multi-signature" feature, your employees can benefit from multiple email signatures. No technical manipulation is required. Thanks to our Add-in for Outlook or the desktop app, they can change their email signatures as they wish with just a few clicks.

Regarding the creation of email signatures, you can make several variations such as:

Everything has been thought of to go further in the personalization process based on the recipient of your emails.

4
How is the internal directory synchronized with the solution?

Not all companies manage their directory in the same way. We propose three methods to synchronize your directory with Letsignit, in just a few clicks:

Once the connection is done, don't worry. If you change user data on Letsignit, your directory will not be impacted.

However, if you want to use Letsignit data to update your directory, you can download an updated CSV file from the platform and reinject it into your directory.

Let’s call this
your signature move

Speak with one of our experts
and take a personalized tour of Letsignit
Request a free trial