Best Email Clients in 2026

Mailbutler Smart Assistant

It suits people who want help drafting, improving, summarizing, and organizing email in Apple Mail, Outlook, or Gmail.

Newton Mail

Newton Mail suits people who want email across Mac, Windows, iPhone, and Android, with offline access and scheduled sending.

Epistles Mail suits people who want to manage multiple supported mail accounts across desktop, mobile, and watch devices.

Spark Mail

Spark Mail suits people managing multiple email accounts who want priority filtering, calendar tools, or team workflows.

eM Client

eM Client suits individuals and teams who want email alongside calendars, tasks, contacts, notes, and chat across desktop and mobile platforms.

Canary Mail suits individuals who want one inbox across supported desktop and mobile platforms, with offline access and scheduled sending.

Mailspring suits people who manage several email accounts from a desktop inbox and want offline access and indexed search.

Spike

Spike says its Email App suits people upgrading an existing email experience or managing multiple accounts.

Dove

Dove suits people who want inbox triage, email summaries and AI help with questions or draft replies.

Gmelius

Gmelius suits teams that work in Gmail and want shared inbox workflows or configurable AI agents.

Mozilla Thunderbird

Thunderbird suits people who want to manage multiple email accounts alongside calendar, contacts, and tasks.

Shortwave

Shortwave suits people and teams who want AI tools alongside business email, including shared threads, private comments, and assigned next steps.

BlueMail

BlueMail suits people who manage accounts from several email providers and want them in one inbox, with calendar and offline access.