Newton Mail vs Shortwave

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.

Shortwave is an AI email app for organizing, writing, scheduling, and searching messages with prompts. Email tools include inbox splits, bundles, delivery schedules, todos, summaries, AI filters, and AI-assisted search. Teams can share live threads, comment privately, assign next steps, and use shared labels. Connections include Slack, Calendar, Notion, Asana, and HubSpot; the pricing page also describes built-in integrations or MCP. Shortwave runs on Android, iOS, macOS, web, and Windows, and includes calendar tools and scheduled sending. It offers a free plan and a 14-day trial; paid plans start at $30/user/mo. Business is $30 a month per seat and includes five years of AI search history, up to 50 threads per search, and three AI-powered filters. Premier and Max cost $45.00 USD and $120 a month per seat, respectively, with unlimited history and higher search-thread and filter limits. Shortwave says data is encrypted at rest and in transit, and customer data is not used to train third-party LLMs. It lists CASA Tier 2 compliance and annual third-party security audits.