Free and open first
Best AI Email Writing Tools in 2026
A useful email draft often depends on how much context and direction you can give the writing tool. Compare email context input and custom instructions, then check tone controls and supported languages against the messages you need to write. Browser extension availability and mail client support can help you judge how each fits where you already work. WriteMail.ai, AI Perfect Assistant and Kerna are among the entries, with Ellie and ForthWrite also included. Free plan and Paid from offer cost context as you consider which writing controls, language options and access points matter for your email workflow.
- 28 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
AI Perfect Assistant
Free plan AndroidExtensioniPhone+2AI Perfect Assistant combines writing assistance and a broad set of listed tools with integrations across office apps, browsers and messaging.
- 2
ForthWrite
Free plan APIExtensionMac+2ForthWrite focuses on drafting replies from a profile learned from sent email, with individual and team plans.
- 3
GPT for Gmail
Free plan AndroidExtensioniPhone+1GPT for Gmail combines thread-aware drafting with search, summaries, and other email tools.
- 4
Ellie
Free plan ExtensionWebWindowsEllie can prepare email drafts and adapt them to a user's writing patterns while leaving sending under user control.
- 5
AI Email Assistant for Thunderbird
Free plan ExtensionChoose AI Email Assistant for Thunderbird if you want a free, open-source writing and translation extension with several provider options and local history.
- 6
Composer AI
Free plan ExtensionWebChoose Composer AI if you use Gmail and want thread-aware reply drafts that you can review and edit before sending.
- 7
Demi
Free plan MacDemi combines inbox assistance, meeting follow-up, and connected workflows while leaving important actions for approval.
- 8
Flailo
Free plan APIWebFlailo combines website-based research with customizable cold-email drafting, plus bulk generation on paid plans. Check the monthly allowance carefully if you expect to regenerate messages often.
- 9
Kerna
Free plan MacWebWindowsKerna brings triage, drafting, summaries, and translation into Gmail and Outlook, with user-triggered processing.
- 10
Jetwriter AI
Free plan ExtensionWebJetwriter AI combines writing tools, page and file chat, and supported email and messaging integrations.
- 11
Lavender
Free plan ExtensionWebLavender offers email coaching and personalization, with separate plan limits and team-focused capabilities.
- 12
Maillifier
Free plan Self-hostedWebChoose Maillifier if you want free, Gmail-based triage and AI-drafted replies while keeping sending under your control.
- 13
MailMaestro
Free plan ExtensionWebMailMaestro combines email writing, thread summaries, contextual replies, and meeting-response support. Its free use is limited, and Gmail access requires Chrome.
- 14
WPS AI Email Writer
Free plan AndroidAPIExtension+5WPS AI Email Writer offers a free way to turn a prompt into editable email text. It creates drafts rather than sending them, and its terms caution users not to provide sensitive information.
- 15
MailSome
Free plan ExtensionWebChoose MailSome if you want email-writing suggestions inside Gmail, with controls for tone and text editing.
- 16
WriteMail.ai
Free plan AndroidAPIExtension+4WriteMail.ai offers controls for drafting different kinds of emails and a way to shape replies from conversation context.
- 17
Xemail
Free plan AndroidiPhoneWebXemail offers adjustable writing formats and reply tools, alongside a free plan and paid in-app purchases.
- 18
Mailyr
Free plan ExtensionMailyr combines subject-based drafting with tone and length choices inside Gmail.
- 19
OpenReply
Free plan ExtensionOpenReply puts model-based drafting controls inside Gmail and offers free starter credits before pay-as-you-go use.
- 20
SalesPort AI Email Writer
Free plan ExtensionWebSalesPort AI Email Writer provides contact-focused cold-email drafting with broad language and tone controls.
- 21
ReplyCalm
Free plan WebPick ReplyCalm if you want a browser-based set of AI tools for rewriting, drafting, and interpreting email, with a free daily allowance or a larger Pro allowance.
- 22
thread.
Free plan ExtensionChoose thread. if you write a lot of email and want a draft based on the conversation in Gmail or Outlook.
- 23
Workforce AI Email Drafter
Free plan WebChoose Workforce AI Email Drafter if your team wants thread-based email drafts and may also use meeting summaries, task automation, or approvals.
- 24
Professionally AI Email Writer
Free trial ExtensioniPhoneMac+2Professionally combines email rewriting, tone controls, multilingual support, and broad client coverage. Review monthly email limits and the stated processing options before selecting a plan.
- 25
InReply
Free trial WebInReply combines knowledge-based email drafting, classification, workflow routing, and shared inbox collaboration.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price