cold email prospecting platform

Mailscale Features

Mailscale combines lead discovery, AI copy, mailboxes and reply handling in one managed service for B2B cold email. This page lists the features shown on the official site.

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Short answer. Mailscale lists lead discovery from natural-language queries, an AI copywriter, pre-warmed outreach mailboxes, self-healing deliverability, phone enrichment and a reply agent, plus a dedicated account manager.

Feature Overview

Capability groups listed on the Mailscale site. Diagram by TryBestAI.

Vendor screenshot of the Mailscale AI copywriter showing sample email variants for a campaign, from the official Mailscale website — Screenshot from the official Mailscale website, made by the vendor, with sample data.

Leads And Copy

You describe your ideal customer in plain language and Mailscale builds a list from a database it says holds 400M+ contacts, sourced through providers such as LinkedIn, Apollo and ZoomInfo. It says emails are verified three times and the data is refreshed monthly, and you can bring your own list to be verified and enriched. The AI copywriter makes 125 email variants for an offer, is said to be trained on 200M sends and gets "smarter each week".

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Mailboxes And Deliverability

Outreach runs on domains that are already warmed, so you skip the usual two-week ramp. The self-healing deliverability feature monitors inbox placement and reroutes sends when an inbox degrades. Where a deliverability commitment applies, the refund policy says the remedy is domain replacement.

Phone Numbers And Replies

Phone enrichment adds verified direct-dial and mobile numbers to contacts. The reply agent reads replies, classifies intent and drafts responses. The FAQ says an account manager and a private channel are included, and that every opt-out is honoured automatically.

What The Site Does Not Say

Any price, plan or volume limit.
Whether you need your own domains or tools, since that FAQ answer is blank.
CRM integrations.
How the deliverability commitment works.

See pricing for what is known, and the note on responsible use below.

Cold email is regulated. Rules such as CAN-SPAM in the US, GDPR and ePrivacy rules in Europe and CASL in Canada cover identification, consent where required and opt-out, and Mailscale's own anti-spam policy bans bulk email to purchased or scraped consumer lists, deceptive content and phishing, and requires an opt-out, a postal address and suppression lists. Leads sourced from large databases may still raise privacy questions in your market, and the site itself says to book a call about compliance for your market. Mailscale does not guarantee results, and its terms say the service is provided as-is. Results from the case studies are the vendor's claims. This is not legal advice.

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How We Wrote This

This page is based on the official Mailscale website and its pricing page, read on 28 October 2026. We have not tested Mailscale ourselves, so we do not claim results. Quality, speed and capability claims are the vendor's own claims. Prices, models and promotions change often, so confirm them on the official site before you pay. See how we review.