Email Signature Tools

Contents

1. 01WelcomeWhat these tools do, how many we grade and what to know before choosing
2. 02Our top threeThe three we'd look at first, and who each one suits
3. 03What they costWhat paid plans start at, the best buy at each budget and the free plans
4. 04The gradesThe highest graded, and how the whole category does on each subject
5. 05Keep or make?Which are worth paying for, and which you could make yourself
6. 06Every toolAll of them, best graded first, with what each costs
7. 07Quick answersThe questions people ask when choosing, each answered in a line or two
8. 08About ToolGPAWho made this guide, what else is on the site, and how to cite it

ToolGPA put this guide together from each tool’s own pages, their app-store listings and our grades. Every fact in it is on the Email Signature Tools page too, where it is kept up to date. Checked Oct 23, 2026.

One email signature design for the whole team, kept up to date from one place.

Before you choose, here are 7 things to know about email signature tools, worked out from every one we grade.

1. 1

   We grade 10 email signature tools

   5 of them are free or have a free plan, and 5 more let you try before paying. Everything in this guide comes from their own pages and our grades.

2. 2

   Paid plans start at $2.33 a month in the middle

   From $0.90 (Exclaimer) to $58.75 (Rocketseed), going by what each one's paid plans start at.

3. 3

   Best value: Opensense and Exclaimer

   Nothing on our chart scores higher than these without costing more.

4. 4

   0 of 10 have iPhone and Android apps

   10 run in a web browser and 1 have a Windows app. Check the one you need before you fall for anything.

5. 5

   The middle GPA is 2.4

   0 score 3.0 or higher. The highest is Exclaimer, at 2.6.

6. 6

   Best free option: Newoldstamp

   Newoldstamp has the highest GPA of the free ones, 2.6. Email signatures priced by the number of signatures, with banners.

7. 7

   6 worth keeping, 0 you could make

   By our keep-or-make rules, 6 do something you couldn't reasonably build yourself, 0 are simple enough to make with an AI app builder, and 4 are a close call.

Part 02 · Top three

Our top three

The three we'd look at first, and who each one suits

The three email signature tools we'd look at first. First place suits the most people; second and third are the best picks for the people it leaves out. Each has an Insider's Guide of its own.

1. 1st

   

   2.6GPA

   Exclaimer

   Free trial · from $0.90/mo

   For: Companies of 10 or more on Microsoft 365 or Google Workspace

   Exclaimer runs signatures for every mailbox from one web portal and, on every plan, adds them on the server as mail leaves, phones included, or in Outlook and Gmail as people type. Details sync from Entra ID or Google Directory, and disclaimers go on every email. Starter is $0.90 a user a month billed yearly. Know the limits: licensing has a 10-user minimum, so the floor is $9 a month; Starter gives the whole company one template and one banner; reports, CRM targeting and HR sync need Pro at $1.75; and there is no free plan, only a 14-day trial.

   The Exclaimer Insider’s Guide

2. 2nd

   

   2.6GPA

   Newoldstamp

   Free plan · from $54/yr

   For: Teams under 10 people, and single senders

   Newoldstamp has one paid plan priced by how many signatures you need: $54 a year for one, $109 for 5 and $219 for 10, each with department designs, banners, clicks and impressions by department, and deployment through Google Workspace, Microsoft 365 or Exchange. A free generator makes a simple signature with Newoldstamp branding. It is second because from 10 people it costs more than Exclaimer, its listing names no server-side option for mail sent from phones, prices are yearly only, the 7-day trial won't let you use what you build, and signatures stop working when the subscription ends.

   The Newoldstamp Insider’s Guide

3. 3rd

   

   2.4GPA

   WiseStamp

   Free plan · from $9/mo

   For: One person who wants a free signature on Gmail or Outlook.com

   WiseStamp's free plan gives one person one signature on personal webmail such as Gmail or Outlook.com, on the standard template with a WiseStamp line under it. It installs through a Chrome extension, an Outlook add-in or desktop apps for Mac and Windows, and company plans sync staff from Google Workspace or Microsoft Entra. It is third because the free plan won't work on a company domain, Pro+ is $9 a month billed yearly for one person, banners start on Grow at $49 plus $1 a person, server-side signatures need Platform at $189 plus seats, and its pricing FAQ says there is no free version while its help centre describes one.

   The WiseStamp Insider’s Guide

Going by our grades, Opensense and Exclaimer give the most for the money among email signature tools: no tool on this chart scores higher without costing more.

Paid plans start at a middle price of $2.33 a month across the 9 that charge, from $0.90 (Exclaimer) to $58.75 (Rocketseed).

3 of the 9 score above the category's average while starting at or below its middle price. 1 cost more than the middle price and score below the average.

Every tool gets five grades, A to F, each with its reason, and a GPA that averages them. Here are the 10 highest graded email signature tools, then how the whole category does on each subject.

Tool	Value	Free	Features	Ease	Platforms	GPA
Exclaimer	B	C	B	C	B	2.6
Letsignit	B	C	B	C	B	2.6
Newoldstamp	B	C	B	C	B	2.6
Gimmio	A	C	C	C	C	2.4
Signature Hound	A	C	C	C	C	2.4
WiseStamp	C	C	B	C	B	2.4
MySignature	C	C	C	C	B	2.2
Opensense	D	D	A	C	B	2.2
CodeTwo	C	C	C	C	C	2.0
Rocketseed	D	D	B	C	B	2.0

Some software does something you couldn’t reasonably build yourself. Some is simple enough that an AI app builder could make the core of it in an afternoon. Here’s where email signature tools land, by the same rules for every tool.

• 6

  Keep it

  It does something you could not reasonably make for yourself, or it costs nothing.

• 4

  Your call

  You could make the core of it, and you would give something up.

• 0

  You could make this

  What it does is the kind of thing an AI app builder makes well, and it charges every month.

Every email signature tool we grade, with its GPA and what it costs. Each one has a page of its own on toolgpa.com, with its Insider’s Guide.

1. 1ExclaimerFree trial · from $0.90/mo2.6
2. 2LetsignitFree trial · from $2/mo2.6
3. 3NewoldstampFree plan · from $54/yr2.6
4. 4GimmioFree plan · from $28/yr2.4
5. 5Signature HoundFree plan · from $28/yr2.4
6. 6WiseStampFree plan · from $9/mo2.4
7. 7MySignatureFree plan · from $6/mo2.2
8. 8OpensenseFree trial · from $1/mo2.2
9. 9CodeTwoFree trial2.0
10. 10RocketseedFree trial · from $705/yr2.0

ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.

Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.

• 3,189

  tools graded

• 94

  categories

• 426

  price changes on record

• 579

  apps priced in 12 countries