How we make this list: we compare pricing pages, product documentation and public user reviews. Rankite is independent; if a vendor ever pays for a featured spot, that listing is clearly labeled Partner.
Key takeaways
- The cheapest team entries are MySignature ($0.92/user/month, annual) and Exclaimer Starter ($0.90/user/month, annual, 10-user minimum).
- WiseStamp ($19/month base + $1/employee) gets cheapest per user as headcount grows; Opensense's $500/month minimum makes it enterprise-only for small teams.
- For signature banner marketing, compare WiseStamp Grow, Newoldstamp and Rocketseed; for compliance-first control, compare Exclaimer and CodeTwo.
- Google Workspace shops should avoid CodeTwo and Letsignit (Microsoft-only); Microsoft shops get the deepest native options.
The best email signature management software
Your team sends 10,000 emails a month. Every one is a billboard you are not using, or worse, a liability: inconsistent branding, missing disclaimers, and the sales rep whose signature still lists the old phone number. Email signature management software fixes both sides: one console that pushes branded signatures to every mailbox, and banner campaigns that turn routine email into a marketing channel. These eight cover the real market, from $0.90 per user to enterprise minimums.
#1
Exclaimer
Best for: Microsoft 365 and Google Workspace teams from 10 users to global enterprises
Visit exclaimer.com
Starting price$0.90/user/month (Starter, billed annually, 10-user minimum)
Free planNo (14-day free trial, no credit card)
Exclaimer is the compliance-first leader. Starter at $0.90 per user per month billed annually (10-user minimum) covers centralized signatures; Standard at $1.45 and Pro at $1.75 add the features most buyers actually want: campaign banners, scheduling, analytics and A/B testing. Per-user math runs about $22.50 per month for 25 users on Starter, $36.25 on Standard, and $90 or $145 at 100 users.
The honest catch is the pricing curve: you pay annually up front, and signature marketing needs Standard. Design control is strong with unlimited templates on Standard/Pro and multi-brand kits on Pro. For the team that needs disclaimers enforced on every email and tamper-proof central control, the scale story is unmatched. For pure marketing banners at small size, the cheaper tools below do fine.
What we like- Covers Microsoft 365, Google Workspace and Exchange with server-side deployment, so signatures land on every device including mobile
- Directory sync with legal disclaimers enforced centrally
- Deep template library with Salesforce and HubSpot integrations on Pro
Watch out for- Annual-only commitment on the headline price
- Campaign banners, scheduling and analytics are gated in Standard/Pro, so the practical starting point is $1.45/user
#2
WiseStamp
Best for: Google Workspace and Microsoft 365 SMBs from 10 to 1,000 employees
Visit wisestamp.com
Starting price$19/month base + $1/employee/month (Basic, billed annually)
Free planNo (free trial available, duration unverified)
WiseStamp's pricing rewards growth. Basic at $19 per month base plus $1 per employee billed annually runs $44 per month for 25 employees ($1.76 per user) but only $119 for 100 ($1.19 per user). Grow at $49 base plus $1 per employee adds banner campaigns with targeting, click analytics and rules that swap signatures by email type; Platform at $189 base targets larger orgs.
Under roughly 20 seats it is pricier per user than pure per-seat rivals, and the trial duration is unverified on the current page. The hands-off deployment is the strength: directory sync keeps profiles current and signatures install company-wide automatically. For the growing SMB that wants signature marketing without enterprise pricing, Grow at $74 per month for 25 users is the value pick.
What we like- Base-fee-plus-$1-per-seat model gets very cheap per user as headcount grows
- AI Signature Designer with auto-sync from Google Workspace or Microsoft Entra
- Grow plan adds targeted banner campaigns and click analytics
Watch out for- Base fee means small teams pay more per user than the $1 headline suggests
- Basic has no campaigns or analytics, so marketing needs Grow
#3
Opensense
Best for: Organizations of 50 to 10,000-plus employees doing account-based signature marketing
Visit opensense.com
Starting price$1/user/month (Signature plan) with a $500/month platform minimum
Free planNo (free and paid trials for qualified leads)
Opensense wears a $1-per-user mask over enterprise pricing. Signature is $1 per user per month, Pipeline $3, Complete $5, but every plan carries a $500-per-month platform minimum plus a service plan fee. At 100 users on Signature you pay $500, not $100. Setup typically needs more IT involvement than lighter tools.
The product earns it for the right buyer: turning employee email into an ABM channel with recipient and account targeting, click analytics and claimed 4-7 percent campaign click-through, with native ties to the whole marketing stack. For the 25-person company, it is the most expensive option here by far. For the marketing team that lives in Salesforce and wants signatures as pipeline, the depth justifies the floor.
What we like- Deepest marketing integration: Salesforce, HubSpot, Marketo, Eloqua and ABM targeting on Pipeline and up
- Server-side deployment via transport rule, so signatures match on mobile, OWA and desktop
- SOC 2 Type II with 24/7 US-based support
Watch out for- The $500/month minimum means a 25-person company pays $500, not $25
- Advanced analytics and campaign management sit in the $3-$5 tiers
#4
Letsignit
Best for: Microsoft 365 and Exchange organizations from ~40 users up
Visit letsignit.com
Starting price$1.50/user/month (Pro plan), $60/month minimum on annual commitment
Free planNo (free trial available)
Letsignit is the Microsoft-native value pick. Pro at $1.50 per user per month includes banner campaigns assignable by department, which competitors gate in higher tiers. The $60-per-month minimum means 25 users pay $60 (not $37.50), and 100 users pay $150. Enterprise is custom-quoted.
The honest catch is the boundary: Google Workspace buyers should look elsewhere, and small teams pay the floor regardless. The admin experience lives entirely in the Microsoft stack: Azure directory sync, signatures from all devices, 24/5 support from a Microsoft Gold Partner. For the Microsoft shop that wants signature marketing without Exclaimer Standard pricing, this is the sweet spot.
What we like- Purpose-built for Microsoft 365 with Entra ID directory sync and a native Outlook add-in
- ISO 27001 and 27018 certified, hosted on Azure
- Pro includes targeted banner campaigns, unusual at this price
Watch out for- Heavily Microsoft-centric, so Google Workspace shops get less
- The $60/month minimum doubles the effective rate for a 10-person team
#5
Newoldstamp
Best for: Marketing-driven SMBs and mid-market teams on Google Workspace or Microsoft 365
Visit newoldstamp.com
Starting price$1.80/signature/month (billed annually)
Free planLimited free version (per review sites); 7-day free trial
Newoldstamp leads with marketing at a low entry price. At $1.80 per signature per month billed annually, 25 signatures run $45 per month and 100 run $180. Banner campaigns with scheduling and segmentation are core features, not upsells, with department-level templates and 24/7 live chat support.
The per-signature model cuts both ways: smooth at small scale, expensive past 100 seats versus Exclaimer Starter or CodeTwo. The admin friction is real: no CSV or Excel bulk import for user photos means manual entry on large rollouts, and reviewers flag no prorated billing with tricky auto-renewal refunds. Confirm billing terms before committing. For the marketing-led team under 50 seats, the campaign toolkit per dollar is strong.
What we like- Per-signature pricing scales smoothly with a slider from 5 to 200-plus
- Built-in banner campaigns with scheduling and segmentation plus signature analytics
- CRM integrations (HubSpot, Salesforce) without an enterprise tier
Watch out for- Per-signature billing gets pricey at scale (100 signatures is $180/month)
- No CSV bulk import for photos and user data, so large rollouts need manual entry
#6
Rocketseed
Best for: Microsoft 365 and Google Workspace companies of 50 to 10,000-plus employees
Visit rocketseed.com
Starting price$705/year for 50 employees (about $1.18/employee/month, annual billing)
Free planNo (14-day free trial, 50-plus employees only)
Rocketseed sells the all-in-one marketing package: signature management, banner campaigns with flexible placement and rotation, real-time analytics and dynamic legal disclaimers based on sender and receiver rules. Published math is about $58.75 per month for 50 employees or $110 for 100 on annual billing ($73 or $137 monthly). One price, every feature, no tier-guessing.
The first-year math includes a mandatory setup fee covering implementation, design, activation and training, and teams under 50 employees are not self-serve. Design control is white-glove: Rocketseed does the initial signature and banner design for you. For the mid-size company that wants signature marketing with real reporting and zero admin effort, the managed model earns its premium.
What we like- One simple price with all features included instead of tiered gates
- Strong marketing analytics with real-time click alerts and Salesforce integration
- White-glove setup with initial design and training included
Watch out for- A one-time setup fee inflates first-year cost
- Pricing and trial are geared to 50-plus employees, so small teams go through sales
#7
MySignature
Best for: Freelancers, startups and small businesses of 1 to 50 employees
Visit mysignature.io
Starting price$0.92/user/month (Teams plan, billed annually)
Free planYes (free plan with limited signatures)
MySignature is the price-to-simplicity pick. Teams at $0.92 per user per month billed annually runs about $23 per month for 25 users and $100 at 100 users, the lowest published team rate here. Professional from $1.50 adds more. The free plan covers individuals, and the template library with banner support handles basic promotions.
The ceiling is real: no deep directory sync or enterprise governance, limited CRM integrations, and campaign management lighter than WiseStamp Grow or Rocketseed. For the team that wants cheap, centralized, good-looking signatures without an IT project, nothing beats the entry price. Growing companies with compliance needs will outgrow it.
What we like- Cheapest team entry in the set with per-seat pricing sliding down at scale
- Wide template selection with Gmail, Outlook and Apple Mail compatibility
- Low friction with a free plan, Chrome extension and central dashboard
Watch out for- Enterprise admin features (directory sync depth, governance) are thinner than Exclaimer or CodeTwo
- Fewer CRM connections and paid white-labeling
#8
CodeTwo Email Signatures 365
Best for: Microsoft 365 organizations from 10 to 100,000-plus users
Visit codetwo.com
Starting price$1.22/user/month at 10 users (yearly billing, sliding down with volume)
Free planNo (14-day free trial, extendable to 21 days)
CodeTwo's pitch is predictable simplicity: one plan, every feature, monthly or yearly billing cancellable anytime. The per-user rate slides with volume: $1.22 at 10 users yearly down to $0.73 at 500, roughly $30 per month at 25 users and $90 at 100. Rule-based signatures by department, group or attribute apply server-side, so disclaimers work from any device.
The boundary is absolute: Google Workspace is excluded entirely. The exact per-user price for mid-size counts is tier-dependent, so check the pricing table for your count rather than multiplying a flat rate. Campaign-style banners run through signature rules, though marketing analytics are less of a headline than at Rocketseed or Opensense. For the Microsoft-only org that hates tier-guessing, this is the cleanest buy.
What we like- Single tier with all features included: signatures, disclaimers, branding, rules and analytics, no upsell tiers
- Volume pricing drops steadily to $0.73 at 500 users
- ISO 27001 and 27018 compliant, built exclusively for Microsoft
Watch out for- Microsoft 365 and Exchange only
- Google Workspace organizations cannot use it at all
Signatures vs. banners: which job are you buying for
Two different buyers shop this category. The compliance buyer needs consistent branding and legal disclaimers on every email, enforced centrally, tamper-proof: Exclaimer, CodeTwo and Letsignit lead, with directory sync and server-side deployment doing the heavy lifting. The marketing buyer wants banner campaigns with targeting, scheduling and click analytics: WiseStamp Grow, Newoldstamp, Rocketseed and Opensense lead, with the signature as ad inventory.
Most teams need both, which is why the tier gates matter. Exclaimer's banners need Standard ($1.45/user). WiseStamp's campaigns need Grow. CodeTwo includes everything in one tier. Decide which job is primary: buy compliance-first and add marketing, or buy marketing-first and confirm disclaimers are covered. The cheapest tool for the wrong job is the most expensive mistake.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
| Exclaimer | Microsoft 365 and Google Workspace teams from 10 users to global enterprises | $0.90/user/month (Starter, billed annually, 10-user minimum) | No (14-day free trial, no credit card) |
| WiseStamp | Google Workspace and Microsoft 365 SMBs from 10 to 1,000 employees | $19/month base + $1/employee/month (Basic, billed annually) | No (free trial available, duration unverified) |
| Opensense | Organizations of 50 to 10,000-plus employees doing account-based signature marketing | $1/user/month (Signature plan) with a $500/month platform minimum | No (free and paid trials for qualified leads) |
| Letsignit | Microsoft 365 and Exchange organizations from ~40 users up | $1.50/user/month (Pro plan), $60/month minimum on annual commitment | No (free trial available) |
| Newoldstamp | Marketing-driven SMBs and mid-market teams on Google Workspace or Microsoft 365 | $1.80/signature/month (billed annually) | Limited free version (per review sites); 7-day free trial |
| Rocketseed | Microsoft 365 and Google Workspace companies of 50 to 10,000-plus employees | $705/year for 50 employees (about $1.18/employee/month, annual billing) | No (14-day free trial, 50-plus employees only) |
| MySignature | Freelancers, startups and small businesses of 1 to 50 employees | $0.92/user/month (Teams plan, billed annually) | Yes (free plan with limited signatures) |
| CodeTwo Email Signatures 365 | Microsoft 365 organizations from 10 to 100,000-plus users | $1.22/user/month at 10 users (yearly billing, sliding down with volume) | No (14-day free trial, extendable to 21 days) |
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Frequently asked questions
How much does email signature management software cost?
From about $23 to $150 per month for a 25-person team. MySignature Teams runs ~$23/month, Exclaimer Starter ~$22.50, CodeTwo ~$30, WiseStamp Basic $44, Letsignit $60 (minimum), Newoldstamp $45. Opensense costs $500/month minimum regardless of size. At 100 users: MySignature ~$100, Exclaimer Starter $90, CodeTwo ~$90, WiseStamp Basic $119.
Do I need this if my team is under 10 people?
Probably not the paid tools: minimums punish tiny teams (Exclaimer 10-user minimum, Letsignit $60/month floor, Opensense $500 floor). MySignature's free plan or WiseStamp's per-seat math can work, but under 10 mailboxes, a shared template in Google Workspace or Microsoft 365 admin settings often suffices. Buy when headcount or compliance needs make manual signatures unmanageable.
Which works with Google Workspace?
Exclaimer, WiseStamp, Newoldstamp, Rocketseed, MySignature and Opensense all support Google Workspace. CodeTwo and Letsignit are Microsoft-only: Google shops cannot use them. Confirm the deployment method (server-side vs. client-side) for your setup, since mobile signatures depend on it.
Can email signatures really drive marketing results?
As a banner channel, yes, with measured expectations. Opensense claims 4-7 percent campaign click-through on targeted banners. The value is consistent impressions on mail you already send: event promotions, content launches, review requests. It complements email marketing; it does not replace it. Track banner clicks separately to judge ROI.
How do legal disclaimers work?
The compliance tools apply disclaimers server-side from one console, so every outbound email carries the right legal text regardless of device. Exclaimer, CodeTwo and Letsignit treat this as core functionality. Marketing-leaning tools include disclaimer support but with less governance depth. Regulated industries should buy compliance-first.
What happens when someone leaves the company?
With directory sync (Exclaimer, WiseStamp, Letsignit, CodeTwo), departures update automatically: the signature follows the directory, so ex-employees lose branded signatures immediately. Without sync, an admin removes the seat manually. Either way, centralized control beats the old world where signatures lived on each laptop forever.
How we chose
We started with the categories buyers search: email signature management software and email signature software. For each candidate we opened the vendor's own pricing page, checked plan names and prices against public reviews on G2 and Capterra and practitioner discussion on Reddit, and compared feature lists, deployment methods, banner campaign depth, compliance features and team-size fit. Where a price could not be verified on the vendor's page we wrote "See website" rather than guessing.
Sources we checked (10)
- https://www.exclaimer.com/pricing/
- https://www.wisestamp.com/pricing/
- https://www.opensense.com/pricing/
- https://www.letsignit.com/pricing/
- https://www.newoldstamp.com/pricing/
- https://www.rocketseed.com/pricing/
- https://www.mysignature.io/pricing/
- https://www.codetwo.com/email-signatures/pricing/
- https://www.g2.com/categories/email-signature
- https://www.capterra.com/email-signature-software/
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has spent more than a decade helping SaaS and e-commerce brands grow through search. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.