MailTantra
MailTantra
20 features · all included

Everything the paid tools charge for.

Cold email sequences, warm-up, deliverability, AI writing, lead discovery and analytics, the sales automation stack agencies actually need, in one platform.

01

Campaigns & sending

Build a sequence once, then let it run across every mailbox you own.

Multi-step sequences

Chain follow-ups with per-step delays and stop them automatically when someone replies.

  • —Unlimited steps with independent wait times
  • —Auto-stop on reply, bounce or unsubscribe
  • —Schedule by weekday, send window and timezone

A/B testing with auto-winner

Run template variants inside a single step and let the campaign pick what works.

  • —Multiple variants per sequence step
  • —Winner scored 60% on replies, 40% on opens
  • —Per-template performance breakdown

Inbox rotation

Spread volume across many senders so no single mailbox carries the load.

  • —Round-robin or random rotation
  • —Mix Gmail and SMTP inboxes in one campaign
  • —Per-inbox daily caps, hard-limited at 50/day

Ramp-up & human pacing

New mailboxes start slow and speed up as they age, with human-like gaps between sends.

  • —Tiered daily limits based on mailbox age
  • —Randomised intervals, never a fixed cadence
  • —Quieter days assigned per inbox each week
02

Deliverability & warm-up

The part that decides whether any of the above ever reaches an inbox.

Mailbox warm-up

Real conversations that build sender reputation before you send anything cold.

  • —Multi-turn threads with proper reply headers
  • —AI-generated replies, not canned templates
  • —Automatically rescues mail from the spam folder

Pairing risk scoring

Scores every warm-up pairing so the pattern never looks artificial to a mailbox provider.

  • —Weighs repeat pairs, reciprocity and concentration
  • —Shadow mode logs decisions before enforcing them
  • —Engagement targeted at 30–50%, not a giveaway 100%

DNS automation

SPF, DKIM and DMARC records written straight to your registrar instead of copy-paste.

  • —Cloudflare, GoDaddy, Namecheap and Route 53
  • —Verification via provider API and direct DNS
  • —0–100 domain health score

Inbox placement testing

Seed sends through real Gmail and Outlook accounts to see where you actually land.

  • —Classifies inbox, spam or promotions
  • —Per-domain and per-subdomain results
  • —Re-checks on a schedule as reputation shifts
03

AI & lead generation

Bring your own API keys — you control the model and the spend.

AI writing & personalization

Per-recipient copy generated at send time, not merge tags in a template.

  • —OpenAI, Anthropic, Gemini, DeepSeek, Grok or Groq
  • —Spintax with nested variants and variables
  • —Optional web enrichment personalises from live search

AI Campaign Studio

Describe the campaign in chat and it builds the templates, list and schedule for you.

  • —Creates templates, picks lists and inboxes
  • —Launches campaigns straight from the conversation
  • —Runs spam-word checks before you send

Smart Leads discovery

Turn a description of your buyer into a verified, ready-to-send contact list.

  • —Search, scrape and extract companies and people
  • —Email pattern guessing with live validation
  • —Runs async so you can close the tab

Risky contact blocking

Bad addresses are removed before they can damage your sender reputation.

  • —Bulk verification removes undeliverables
  • —Auto-blocks after repeated non-engagement
  • —Manual block and unblock overrides
04

Inbox, automation & insight

Everything that happens after the send.

Unified inbox

Every reply across every connected mailbox, in one thread view.

  • —Gmail API, IMAP and inbound webhook capture
  • —Rich-text replies with AI drafting
  • —Classifies human replies from auto-responders

Workflow automation

A visual canvas for anything the sequence builder can’t express.

  • —Triggers on send, open, reply or a schedule
  • —Conditions, waits, list changes and campaign control
  • —Full run history with per-step status

Analytics & tracking

Opens, clicks and replies, sliced by campaign, inbox and hour of day.

  • —Open pixels and click tracking on your own domain
  • —Best-send-time and sending-behaviour insight
  • —Per-campaign and per-template comparison

Templates & builder

Write in plain text, HTML or a drag-and-drop editor, whatever suits the campaign.

  • —Visual builder with CSS inlining
  • —38 ready-made designs in the library
  • —Reusable variables and personalisation tokens
05

Platform & control

It’s your infrastructure and your data.

No per-seat pricing

Pricing scales with your sending volume, not the number of people on your team.

  • —Add teammates without extra seat cost
  • —Plan limits track domains, inboxes, and campaigns
  • —Usage visible any time from Settings → Billing

Connect any mailbox

Gmail and Outlook over OAuth, or any provider over SMTP and IMAP.

  • —Ten SMTP presets, plus fully custom
  • —App-password auth where OAuth isn’t wanted
  • —Credentials encrypted at rest with Fernet

Security & compliance

Two-factor auth, revocable sessions and one-click unsubscribe handling.

  • —2FA on by default, sessions individually revocable
  • —Unsubscribe and suppression handled automatically
  • —Team seats with page-level permissions

Custom tracking domains

Serve pixels and links from your own subdomain instead of a shared one.

  • —Branded click and open URLs
  • —Automatic certificate issuance
  • —Verified before any traffic is routed

Set up your first campaign in under ten minutes.

Connect a mailbox, import a list, and build your first sequence, then let inbox warm-up run before you start sending (most agencies are live within 48 hours).

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