Inbox Zero vs AiSDR – Your first AI SDR

Inbox Zero connects to Gmail or Outlook and uses AI to label incoming mail, draft replies in your voice, and surface what needs attention first. You get pre-written responses waiting when you open your inbox, plus bulk unsubscribe tools for newsletters you never read. The product works on web, iOS, Android, Slack, and Telegram so you can triage mail without living in your email tab.

Most email assistants stop at summarization. Inbox Zero also blocks cold emails, files attachments automatically on higher tiers, and pulls calendar and CRM context into drafts so scheduling replies match your real availability. The codebase is open source with 9k GitHub stars, SOC 2 Type 2 certification, and a self-host option for teams that want full control.

Starter plans cover solo operators who want labels, analytics, and reply drafts. Plus adds Slack, Notion, Stripe integrations, and an unlimited knowledge base. Professional adds team analytics and dedicated onboarding. Over 20,000 professionals use Inbox Zero, and every paid plan includes a 7-day free trial.

AiSDR runs outbound email and LinkedIn sequences for B2B teams, researching prospects, writing messages, and booking meetings without a full SDR hire. You connect your site, CRM, and mailboxes, then Ami AI builds campaigns that send through warmed inboxes and LinkedIn accounts.

Traditional sequencers only blast templates. AiSDR bundles prospecting, deep lead research, deliverability setup, and reply handling in one platform, with native two-way sync to HubSpot and Salesforce on higher tiers. The vendor claims customers replace stacks that would cost roughly $892 more per month across separate lead databases, sequencers, and signal trackers.

Founders on the Solo plan get 200 AI-researched contacts per month from $250, while larger teams scale to 2,500 contacts on the Scale plan. AiSDR reports directional benchmarks of 1 to 3 booked meetings per 100 contacts, with case studies citing 26.6% email reply rates.