Quick answers, then a human

Gmail sets the limit, not MailBrother: about 450 emails a day from a @gmail.com address and 1,800 from a Google Workspace address. Turn on "Split" when sending and larger campaigns continue automatically the next day. Full guide to Gmail limits.

Open Pricing while signed in and click "Manage subscription": you can cancel, change the card or download invoices on your FastSpring account page. Cancelling stops the next charge; the plan stays active until the paid period ends. If you cannot sign in, email us from the address you subscribed with.

The signature is added on the free plan. Any paid plan removes it from every email sent from your address, immediately after the payment.

Google Workspace organisations can block third-party apps by default. Ask your Workspace admin to allow MailBrother in Admin console → Security → Access and data control → API controls. Personal @gmail.com accounts are not affected. Until then, paste recipients directly into the "To" field.

In Gmail open the MailBrother menu → Campaigns, find the campaign and click "Stop". Emails already handed to Gmail cannot be recalled; the rest of the list stays in the queue and can be resumed later.

Send to people who expect to hear from you, use a real subject line, add an unsubscribe link, keep a delay of 20–40 seconds between emails and clean your list of dead addresses. New Gmail accounts should start with small campaigns. If you use your own domain, set up SPF, DKIM and DMARC.

With click tracking on, links pass through a MailBrother tracking redirect so we can count clicks. Turn off "Tracking clicks" in the campaign dialog to keep original links.

Use the unsubscribe link in the email, or see Why did I get this email? to block a sender.

Remove the extension from chrome://extensions and revoke MailBrother's access at myaccount.google.com/permissions. To delete campaign data and your account on our side, email [email protected] from your account address.