Exclaimer
WiseStamp
NEWOLDSTAMP
Sigstr
Drift
Xink
MySignature
Opensense
ForthWrite
ReclaimAI
Superhuman
Shortwave
Serif AI
Gemini
Gmail
LIAM
Exclaimer is the industry's leading provider of email signature solutions, empowering businesses to unlock the potential of email as a key digital advertising channel. With its award-winning tools, organizations can simplify the management of email signatures to deliver consistent branding, promote marketing campaigns and company news, gather real-time customer feedback, and much more.
Over 50,000 organizations in 150+ countries rely on Exclaimer for their email signature solutions. Its diverse customer base includes Sony, Mattel, Bank of America, NBC, the Government of Canada, the BBC, and the Academy Awards. For more information, visit www.exclaimer.com.
ForthWrite is an AI email writing assistant for Gmail and Outlook that learns your writing style from your real sent mail. The more you use it, the more it sounds like you. Get smart drafts in seconds, auto-draft replies before you open your inbox, and maintain your personal voice at scale. Free to start, no credit card required. Works inside Gmail and Outlook on the web.
How it works
ForthWrite captures your tone, sentence rhythm, and sign-offs from your actual sent emails, then uses that profile to generate drafts that match how you write, not a generic AI voice. Every draft you edit or send improves the model over time.
Key features
Who uses it
Professionals who send high volumes of relationship-critical email: lawyers, financial advisors, recruiters, account executives, founders, and anyone who wants their inbox handled without sounding like a chatbot wrote it.
Pricing
Free tier includes 10 drafts per week with no credit card required. Paid plans start at $12/month and include unlimited drafts, custom persona prompts, and auto-draft.
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ForthWrite's answer:
Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API
ForthWrite's answer:
ForthWrite learns your writing style from your actual sent mail, not a generic prompt. Every draft sounds like you wrote it because it was trained on how you actually write. It also auto-drafts replies before you open your inbox, so your email is partially handled before your day starts.
ForthWrite's answer:
Most AI email tools give you a blank box and a "write for me" button. ForthWrite builds a voice profile from your sent history and gets more accurate with every draft you edit or send. Unlike ChatGPT or Gemini, it works natively inside Gmail and Outlook with no copy-paste. Unlike Lavender, it writes the draft, not just scores it.
ForthWrite's answer:
Professionals who send high volumes of relationship-critical email and cannot afford to sound generic: lawyers, financial advisors, recruiters, account executives, consultants, and founders managing their own inbox.
ForthWrite's answer:
Built out of frustration with AI writing tools that produce text that sounds nothing like the person sending it, and as a way to handle large amounts of daily email. The core insight was that your sent mail is the best training data you already have, and no tool was using it.
I built ForthWrite because I kept sending emails that sounded like they came from the same generic AI as everyone else. After launching it, I still use it for my own inbox every day, which is about the most honest endorsement I can give.
The Chrome extension lives inside Gmail and Outlook on the web. Open a thread, hit Alt+Shift+D, and a draft comes back in your voice, not a template. The free tier is real: 10 drafts per week, no API key, no credit card. Voice matching is included on free, because that is the point.
What keeps it useful compared to Gemini or a chat tab: it learns from what you actually send. Every edit you make before hitting send becomes a signal. Over time the drafts drift closer to how you really write, and the dashboard shows the improvement curve so you can see it happening.
The web compose surface lets you draft from forthwrite.ai without installing anything, useful for people who want to try before committing to the extension.
Standard adds recipient-aware and intent-aware drafting plus AI coaching. Pro adds auto-draft (replies waiting when you open Gmail), batch replies, and Prompt Lab for version-controlling your prompts. Teams adds a shared persona and seat-level analytics.
ForthWrite is not for everyone. If you just need quick replies and tone does not matter, Gemini is free and already in your inbox. ForthWrite is for people where tone does matter: client communication, relationship-driven threads, external correspondence where sounding off costs something real.
Disclosure: I am the founder and use it daily. Happy to answer questions in the comments.
Based on our record, Exclaimer seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Okay - this should be pretty obvious right now, but I still see it all the time. Do not use API keys from your client-side application!. If an API you are working with requires an API key, you should proxy your call through a gateway or some other service, and securely store the key in a secrets manager. Karl Bagci, Head of Information Security at Exclaimer, has this recommendation for frontend devs:. - Source: dev.to / over 1 year ago
It sounds like Avast may be using browser code injection to add their signature to your emails without your consent. This practice can be intrusive and raise privacy concerns. However, there are legitimate services like https://exclaimer.com/ that allow users to add signatures to their emails with their consent and control over the content. If you're experiencing unwanted signatures, it's important to check your... - Source: Hacker News / about 2 years ago
Depending on what you need/want in the signatures and if that level of detail in AD...tools like exclaimer.com may or may not fit the bill. Source: over 5 years ago
WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
ReclaimAI - Helps users prioritize their work and personal calendars
NEWOLDSTAMP - Email signature generator
Superhuman - Superhuman is an email management tool.
Sigstr - Email signature marketing
Shortwave - Email smarter & faster with a reinvented experience for your Gmail