Changelog

What changed in the extension

Manifest V3 build, distributed through the Chrome Web Store. Updates install automatically.

2.2.5 September 2026

  • Follow-ups if no reply: up to three steps in the same thread, stop on reply, unsubscribe, bounce or click; AI writes the drafts. Docs
  • Replies: real replies detected and sorted (interested, question, not now, asked to stop), Gmail labels, one-click AI draft answer, reply rate per campaign. Docs
  • Before you send: checklist, personalized preview for the first rows, spam score, test email to yourself; 60-second Undo after Send Mass.
  • Recipients: paste addresses or upload a CSV, verify addresses, suppression list with whole domains and CSV import/export, enrichment with company data and a personal opening line. Docs
  • AI tools: subject ideas, rewrite in another tone, shorten or expand, translate into 16 languages, HTML email from a description, campaign summary. Docs
  • Deliverability: List-Unsubscribe headers (Gmail's own Unsubscribe button), SPF/DKIM/DMARC check, plain-text part for HTML emails, auto-pause on bounce spikes and complaints, warm-up for new accounts, own tracking domain.
  • Campaigns: campaign page with per-recipient status, clicked links, mail clients and countries, resend to unopened, copy addresses; best time to send; MailBrother averages; weekly report by email; results written back to Google Sheets.
  • Compose: templates, send from a "Send mail as" alias, conditional blocks {if Var}…{/if}, insert variable, default 30-second interval, tracking off for small sends.
  • Redesigned dialogs; the AI assistant bubble is gone.

2.2 Manifest V3

  • Extension rebuilt on Manifest V3 (Chrome's current extension platform).
  • Sign in with Google via the Google Identity Services flow; separate consent for Google Sheets access.
  • Recipient import from Google Sheets: auto-detected email column, alias mode for large lists, up to 10,000 rows.
  • Team subscriptions: seat management and automatic joining by company domain.
  • Fixes for the Insert HTML flow and interface errors.

2.1.3

  • Improved tracking system. Now fewer of your emails will end up in "Spam".

  • Increased the number of imported rows from GSheet to 10000.

  • If the number of rows being imported exceeds 90% of the available daily message limit, then the campaign is created as a split send with a split send portion size of 90% of the available daily message limit.

  • Added option to specify the interval between sending messages.

  • Added option to specify the number of messages sent per day when split sending.

  • Now bounced messages are transferred to the trash, thereby freeing the "Inbox" from uninformative messages.