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Product / Email Outreach

Cold email that sounds like you wrote it

Describe your offer once. The AI drafts the full sequence, personalizes every send with real prospect details and rotates across all your mailboxes, so outreach reads one-to-one and scales without burning domains.

14-day free trialNo credit cardCancel any time
app.mailoptimal.comLive demo
AI personalisedEvery lead, every step
Pauses on replyNo awkward follow-ups
1 brief
Turns into a full multi-step sequence
Unlimited
Mailboxes in sender rotation
A/B
Winning variant takes over on its own
Auto-pause
Follow-ups stop the moment someone replies
Email OutreachAI sequencesPersonalizationA/B testingSender rotationSchedulingFAQStart free
AI drafting

One brief, a finished sequence

Tell the AI who you sell to and what you offer. It writes the intro, the follow-ups and the break-up email, with subject lines for each, in your tone and length. Every step stays editable, and good sequences save as templates.

  • Intro, follow-ups and break-up in one pass
  • Tone and length controls on every step
  • Save any sequence as a reusable template
Your brief
VP Sales at SaaS companies, 50–500 staff. We cut SDR ramp time in half.
Brief3-step sequence
1
Quick idea for Northbeam
Intro · Day 0
Day 0
2
Bumping this up
Follow-up · Day 3
Day 3
3
Should I close the loop?
Break-up · Day 7
Day 7
In every sequence
Intro email
Follow-ups
Break-up email
Subject lines
In one pass
IntroFollow-upsBreak-upSubject lines
Preview for Sarah · Northbeam
Merge fields and spintax filled in
3 unique variants
Subject: Quick idea for Northbeam
Hi Sarah, Noticed Northbeam opened two SDR roles this month. Teams at that stage usually lose a quarter to ramp time.
Spintax rotation
SawNoticedSpotted
Personalization

Every send reads like it was written once

Merge fields pull real prospect details into each email, and spintax rotates phrasing so no two messages are identical. That keeps copy human and keeps filters from fingerprinting a campaign.

  • first_name, company, job_title, recent_event and custom fields
  • Spintax variants rotated automatically
  • Preview any lead before you launch
Personalise with
Merge fieldsSpintaxAI rewritesReal prospect details
A/B testing

Let the better subject line win

Test subject lines and body copy side by side. Once a variant pulls ahead on replies, it takes over the remaining sends without you stepping in.

Subject line test
Split 50 / 50 until a winner emerges
Auto-promoted
VARIANT AWinner
“Quick idea for Northbeam”
Reply rate
7.4%
Open rate 58%
VARIANT B
“Cutting SDR ramp time”
Reply rate
5.1%
Open rate 49%

Variant A promoted to 100% of remaining sends.

Sending pool · 4 mailboxes
Daily cap 50 per mailbox
153 sent today
sarah@outreach.getacme.com38 / 50
sarah@mail.tryacme.co41 / 50
team@outreach.getacme.com39 / 50
team@mail.tryacme.co35 / 50
Sender rotation

Spread the volume, protect the domains

Sends rotate across every mailbox in the campaign so no single inbox sends too much, too fast. Daily caps hold per mailbox, and new mailboxes join the rotation as soon as they are warm.

  • Unlimited mailboxes in one rotation pool
  • Per-mailbox daily caps respected
  • Works with InfraOptimal, Google, Microsoft and SMTP
Sends from
InfraOptimalGoogleMicrosoftSMTP
Scheduling and replies

Sends in their hours, stops when they answer

Emails go out inside each prospect’s local business hours with human-like gaps between them. The moment someone replies, their follow-ups pause and the thread lands in the Unibox.

Sequence · Sarah Kim
Sends 9am–5pm in her time zone
Stopped on reply
Intro
Sent Tuesday 9:42am her time
Sent
SK
“Yes, let’s talk. Does Thursday work?”
Reply detected, routed to the Unibox
Replied
2
Follow-up
Would have sent Friday
Paused
3
Break-up
Would have sent next Tuesday
Skipped
Sends like a person
Local business hoursHuman-like gapsPause on replyDaily caps per mailbox
Works with

Part of one platform.

See the whole platform
Unified Inbox
Every reply in one shared inbox
Lead Finder
700M+ verified B2B contacts
Warmup and Placement
Unlimited warmup and inbox tests
InfraOptimal
Dedicated-IP mailboxes from $1.00
FAQ

Questions, answered.

Still unsure? Book a demo and we will walk you through it.

Book a demo
Will my emails actually land in the inbox?
That is the whole point of MailOptimal. Sequences ride on built-in warmup, sender rotation and placement testing, so your sends reach the primary inbox instead of spam or promotions.
How many mailboxes can I send from?
As many as your plan lets you connect. Sends rotate across all of them automatically to protect each domain’s reputation.
Can I edit what the AI writes?
Always. The AI gives you a full first draft; rewrite any step, adjust tone and length, or save it as a template.
Does it support follow-ups and conditions?
Yes. Build multi-step sequences with delays, and follow-ups pause automatically the moment a prospect replies.
Can I A/B test?
Yes. Test subject lines and copy variants, and the winning version takes over the remaining sends.
InfraOptimal

Send it from an IP that is only yours.

InfraOptimal mailboxes from $1.00 with a dedicated IP, DNS and warmup included. A quarter of the Google and Microsoft price.

See InfraOptimal
Lifetime deal · limited seatsPay once. Use MailOptimal forever.Lifetime plans from $79, one payment. Sold out when this batch of 1000 seats is gone.355 seats left645 of 1000 claimedClaim your seat InfraOptimalMailboxes from $1 / monthDedicated IP, DNS and warmup included. 500 mailboxes for $500 a month, against $2,000 on Google or Microsoft.$1per mailbox / monthSee InfraOptimal

Write your first sequence in 60 seconds

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