Twain
Email Writing
Write emails that get answers
Like Mailr, Twain is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
We've curated 44 of the best alternatives to Mailr, ranked by feature overlap, topic similarity, user ratings, and popularity. Twain, InboxPro, and Friday Email lead the list as the closest matches.
Updated May 18, 2026
The list includes 4 free alternatives, 23 freemium, 6 paid, and 11 with a free trial, so whether you're looking for a no-cost replacement or a more capable paid tier, there's an option to compare. Mailr itself is freemium, which makes freemium alternatives the most natural starting point.
Many of these tools cluster around use cases like Email Automation, Productivity Tool, Email Management, and Email Drafting — the same problem spaces Mailr addresses. Cross-referencing tools that overlap on multiple topics gives a more reliable signal than category alone, because two products in the same category can still serve very different workflows.
Our ranking weighs eight signals: shared category, topic overlap, feature overlap, name and description text similarity (via PostgreSQL's pg_trgm and tsvector), Bayesian-smoothed user ratings, pricing-model match, popularity, and editorial overrides. Scores are then normalized within each tool's own candidate pool so the top match always represents the strongest available alternative.
Use the table of contents below to jump to free or paid alternatives, or scroll down to compare each option side-by-side with Mailr.
Ranked by compatibility score
Email Writing
Write emails that get answers
Like Mailr, Twain is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Streamline client acquisition with AI-powered email tools.
Like Mailr, InboxPro is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
4 free and 23 freemium options.
6 paid options.
20 additional candidates
Like Mailr, Taskified is in the Email Writing category. Taskified is paid, while Mailr is freemium. Worth comparing on the detail page.
Like Mailr, Email Whisperer is in the Email Writing category. Email Whisperer is free-trial, while Mailr is freemium. Worth comparing on the detail page.
Twain ranks as the highest-scoring alternative to Mailr, based on shared category, topic overlap, feature similarity, and user ratings. Ratings are still being collected for this tool.
Yes — 4 fully free and 23 freemium alternatives are available, including Twain, InboxPro, and Friday Email.
Twain is similarly priced (freemium) and sits in the same category (Email Writing). View its detail page to compare features, integrations, and reviews side-by-side.
Top Email Writing alternatives include Twain, InboxPro, Friday Email, and AI Writer & Grammar Checker Tool – AImReply. These tools share the same primary category and have meaningful topic overlap with Mailr.
Neither Mailr nor Twain has user ratings yet — be the first to review either tool to help future visitors compare them.
Email Writing
AI-powered email assistant for effortless communication.
Like Mailr, Friday Email is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Improve your communication with AI writing and grammar tools.
Like Mailr, AI Writer & Grammar Checker Tool – AImReply is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Draft emails 10x faster with AI.
Like Mailr, WriteMyEmail is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
AI-powered assistant for more effective emails.
Like Mailr, Respondable is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Use AI on Any Site: Write emails, fix grammar, research and more
Like Mailr, ChatGPT Writer is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Launch your product's AI assistant without an AI team
Like Mailr, Superflows is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
AI-powered email replies for effortless communication
Like Mailr, superReply is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Effortlessly draft emails with AI on your iPhone.
Like Mailr, MAILE for iPhone is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Transform casual texts into polished, professional messages.
Like Mailr, Professionalize It To Me is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
AI-powered email replies for effortless communication.
Like Mailr, ReplyAssistant is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Boost email creativity with AI-powered writing
Like Mailr, AWeber is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Generate engaging emails with AI
Like Mailr, Snov Email Writer is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
AI-powered no-code email builder for everyone
Like Mailr, Blocks is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
AI Email Writer: TextX App
Like Mailr, TextX is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Revolutionize email writing with AI assistance.
Like Mailr, Clippit AI is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Create professional emails in seconds with AI
Like Mailr, SlikSafe Email Generator is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
AI-powered email design assistant for stunning templates.
Like Mailr, Emailgic is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
WriteMail.ai: Generate Perfect Emails in Seconds with AI Email Writer
Like Mailr, WriteMail.ai is in the Email Writing category. Both are freemium. Worth comparing on the detail page.
Email Writing
Craft professional emails in seconds with AI
Like Mailr, QuickMail AI is in the Email Writing category. QuickMail AI is free-trial, while Mailr is freemium. Worth comparing on the detail page.
Email Writing
AI-powered cold email software for sales professionals
Like Mailr, Nureply is in the Email Writing category. Nureply is free-trial, while Mailr is freemium. Worth comparing on the detail page.
Email Writing
Reply to emails 10x faster.
Like Mailr, The Reply Project is in the Email Writing category. The Reply Project is paid, while Mailr is freemium. Worth comparing on the detail page.
Email Writing
AI-powered assistant for smarter email communication
Like Mailr, Mailbutler is in the Email Writing category. Mailbutler is free-trial, while Mailr is freemium. Worth comparing on the detail page.
21 more free/freemium alternatives listed below. Browse all Mailr alternatives ↓
27 free or freemium alternatives to Mailr on /tools/mailr/alternatives.
6 paid alternatives to Mailr on /tools/mailr/alternatives.
Like Mailr, MailGenerator is in the Email Writing category. MailGenerator is free, while Mailr is freemium. Worth comparing on the detail page.
