Newton Mail vs Spark Mail

Newton Mail is an email app for Mac, Windows, iPhone, and Android, with a unified inbox, offline access, scheduled sending, and calendar tools. It supports Gmail, Google Workspace, Outlook, Microsoft 365, and IMAP providers, and connects with apps including Todoist, Evernote, OneNote, Trello, Asana, Claude, and other AI apps. The free plan has no time limit and supports up to two Gmail, Outlook, or IMAP accounts, 15 read receipts per month, and 20 AI actions per day. Pro costs $5 a month with annual billing and includes unlimited email accounts, read receipts, and templates, plus 200 AI actions daily. Team costs $12 a month with annual billing and a two-seat minimum; workspaces include three shared inboxes. Teams can share threads, comment, reply on behalf of others, and view activity. Newton says credentials are encrypted with AES-256-GCM and that it does not see email passwords through OAuth sign-in. Attachments are limited to 25 MB. A 14-day free trial is available.

Spark Mail is an email app for Android, iOS, macOS, and Windows that helps users focus on important messages. Smart Inbox separates priority mail from other messages, while a unified inbox brings multiple accounts together. It supports IMAP, iCloud, Exchange, Outlook, Yahoo, and Google accounts, as well as offline access, scheduled sending, and calendar tools. Teams can collaborate on email in real time, add private comments and shared information, delegate ownership, track progress, and set deadlines. Spark +AI can translate, summarize, draft, and proofread email; AI Assistant can find information and take action across emails, attachments, meeting notes, and events. AI is disabled by default, and AI features have plan-based monthly quotas. Listed integrations include Asana, Evernote, Google Drive, Microsoft Teams, Notion, Slack, Todoist, Trello, and Zoom, with availability varying by platform. The free plan includes unlimited accounts, Smart Inbox, Smart Notifications, essential email productivity, and Calendar. Plus costs $10 a month per user, and Pro costs $20 a month per user. A 7-day Plus and Pro trial is available when subscribed to directly in the app.