AI in Gmail: subject lines, rewriting, translation, replies

MailBrother's AI helpers live inside the Gmail compose window and the Campaigns tab, not in a separate chat. They work on the email you are writing and on your own campaign data. Free accounts get 40 AI requests a day, paid plans 300; the counter is shown on the Campaigns tab.

In the compose window (MailBrother options ▾)

• Subject ideas. Five subject lines for the email you wrote: plain, curious, benefit, question, short. One click puts the chosen one into the Subject field.
• Improve text. Rewrite warmer, shorter and more direct, or more formal; cut to half; expand a terse draft; or check the spam risk. You see the result before it replaces your text. Tags like {FirstName} are kept.
• Translate. Translate the email (and subject) into one of 16 languages, keeping tags and links.
• Insert HTML → Describe it. Describe the email ("launch note, three benefits, one orange button to /pricing, signature Maria") and get a clean 600-pixel HTML email with inline styles and an unsubscribe line.
• Enrich recipients. Looks up every recipient's company by email domain in our index of 20 million live sites and adds {Company_Name}, {Company_Summary}, {Company_Category} and a personal opening line {AI_Intro}. Works on pasted lists and on Google Sheets (adds columns).

Before you send

The pre-flight window shows a rules-based spam score with the reasons. Ask AI for a second opinion adds a short review: how the email reads to a stranger and the three edits that would help most.

Follow-ups and replies

• Write with AI in the follow-up editor drafts step 2 and 3 from your first email.
• Replies are classified (interested, question, not now, not interested, asked to stop).
• AI draft reply writes an answer into a Gmail draft in the same thread. You edit and send.

On the campaign page

AI summary turns the numbers of a finished campaign into a few sentences: what worked, how it compares with the MailBrother averages, and the one change to make next time.

What the AI sees

Only what is needed for the task: the text of the email you are writing, the columns of your recipient list, the reply you ask to answer, or the aggregate numbers of a campaign. Nothing is used to train models. Details in the privacy information.