Instantly alternatives: 7 tools compared, and who each one fits

By Muhammad Hussain, Founder of PersonaSend Updated 8 minute read

The best Instantly alternative depends on why you're leaving. If AI emails cost too much, pick a tool that includes AI writing in the price. If you hit the contact limit, pick one that counts contacts more generously. If the setup was the problem, pick one that sends from the inbox you already have. And if you only send a few hundred emails a month, a simple mail merge may be all you need.

I build PersonaSend, one of the tools on this list, so read this knowing that. Every price below comes from each company's own pricing page, checked on 14 October 2026, in US dollars. Prices change, so check the link before you buy. UK readers: several of these pages say VAT may be added at checkout.

Instantly alternatives at a glance

ToolA good fit if youStarts at (billed monthly)
Smartlead Want a high volume platform like Instantly with unlimited email accounts $39 a month
Saleshandy Want unlimited email accounts plus a lead finder in one plan $41 a month
lemlist Want email plus LinkedIn and other channels in one place $69 a month
Mailshake Are one or two people who want a simple tool, priced per user $29 a month per user
GMass Live in Gmail and want a mail merge with follow-ups inside it $29.95 a month
Mailmeteor Send small mail merges from a spreadsheet and want the lowest price Free, then $5.99 a month
PersonaSend (ours) Want the AI to write a different email for every person, sent from your Gmail or Outlook $19 a month, prepaid

Why people look for an Instantly alternative

Instantly is a strong product for teams sending at volume, with unlimited email accounts and warmup on every sending plan. The reasons people start looking elsewhere usually come from how it's priced, and they're all on its own pricing page:

We worked through Instantly's pricing in detail, with a calculator, in our cold email software pricing guide. Here we focus on the alternatives.

The alternatives, one by one

Smartlead

The closest to Instantly in spirit: a sending platform for agencies and teams that run many inboxes. Every plan includes unlimited email accounts.

Saleshandy

A cold email platform with unlimited email accounts and a built-in lead finder, so you can find contacts and email them from the same place.

lemlist

lemlist is built for outreach across several channels, not just email, with warmup included on every plan.

Mailshake

A straightforward cold email tool priced per user, with AI email writing included and no limit on uploaded contacts.

GMass

GMass isn't a separate app: it adds mail merge to Gmail. You write a campaign as a Gmail draft, and its pricing page describes it as working inside Gmail, so it's for Gmail and Google Workspace accounts.

Mailmeteor

The lightest option here: a mail merge that works from Gmail and Google Sheets, and with Outlook too, with a free plan.

PersonaSend (ours)

PersonaSend is built around one idea: the AI writes a different email for each person on your list, based on what you know about them and, if you like, their company's website. You read and approve the emails, then they go out from your own inbox.

Side by side

ToolEntry plan, billed monthlySending at that priceEmail accountsAI writing, as the pricing page lists it
Instantly$47, or $94 with AI credits5,000 emails, 1,000 contactsUnlimitedPaid separately with credits
Smartlead$396,000 emails, 2,000 contactsUnlimitedIn its managed services
Saleshandy$416,000 emails, 2,000 active prospectsUnlimited, rotation across 10100 AI credits, once
lemlist$69Up to 50,000 emails, warmup includedUnlimited sendersAI agents listed
Mailshake$29 per user1,500 emails1 per userAI email writing included
GMass$29.95Mail merge in GmailYour GmailSpintax and ChatGPT tools
MailmeteorFree, then $5.9950 a day free, 250 a day on Starter1 on StarterAI email writer
PersonaSend$19, prepaid1,000 emails5Every email written for the person, included

Who should stay with Instantly

Switching costs time, so it's worth being honest about when not to. Stay if you send tens of thousands of emails a month across many domains, rely on its warmup and unlimited email accounts, or use its lead data every week. Those are real strengths, and most tools on this list either match them at a similar price or don't offer them.

How to switch without hurting your deliverability

  1. Let running campaigns finish, or pause them, so nobody gets the same email from two tools.
  2. Export your contacts as a CSV, along with anyone who unsubscribed, bounced or asked not to be emailed. Add those to the new tool's do-not-email list before you import anything else. Emailing someone who opted out is the fastest way to collect spam reports.
  3. Keep your warmed inboxes. Mailboxes you set up with your own email provider belong to you, not to the tool, so you can connect the same ones to the new tool. Disconnect them from the old one first, so two tools never send from one inbox at once. If you bought ready-made mailboxes through Instantly, check how to move them before you cancel.
  4. Start below your old daily volume for the first week, and raise it as replies and bounces look normal.
  5. Check your domain's SPF, DKIM and DMARC once more. They don't change when you switch tools, but it's a good moment to confirm all three are set up.

The short version

Want Instantly's volume for less? Look at Smartlead or Saleshandy. Want more than email? lemlist. Want something simple for one or two people? Mailshake. Live in Gmail and only need a mail merge? GMass or Mailmeteor. And if what you're missing is an email that reads like you wrote it to one person, try PersonaSend: the free cold email generator writes one for any company with no account, and the guide to choosing cold email software has the questions to ask any tool before you pay.

Questions people ask

What is the best alternative to Instantly?

It depends on why you're leaving. For the same kind of volume platform at a lower entry price, look at Smartlead or Saleshandy. For email plus LinkedIn, lemlist. For a simple tool for one or two people, Mailshake. For a mail merge inside Gmail, GMass or Mailmeteor. For a different AI written email for every person, sent from your own Gmail or Outlook, PersonaSend.

Is there a free alternative to Instantly?

Mailmeteor has a free plan that sends 50 emails a day. Most cold email platforms offer a trial rather than a free plan. PersonaSend's Free plan lets you set everything up and see 10 AI written emails for your own contacts; sending starts on a paid plan.

Which Instantly alternative is cheapest?

For a mail merge, Mailmeteor: free, then $5.99 a month. For a cold email platform with unlimited email accounts, Smartlead's Base plan at $39 a month. With AI writing included in the price, PersonaSend from $19 a month. These are the prices on each company's pricing page on 14 October 2026.

Which Instantly alternatives work with Outlook?

GMass works only inside Gmail. PersonaSend connects Outlook and Microsoft 365 inboxes with Sign in with Microsoft, and Mailmeteor says it works with Outlook too. For any other tool, check that it connects Microsoft 365 with Microsoft's own sign-in, because Microsoft is switching off password sign-in for apps at the end of 2026.

Can I move my warmed up inboxes from Instantly to another tool?

Yes, if they're mailboxes you set up with your own email provider: connect them to the new tool after disconnecting them from Instantly. If you bought ready-made mailboxes through Instantly, check how to move them before you cancel.

How we wrote this, and our sources

We make PersonaSend, so we're not a neutral reviewer, and we'd rather say that up front. To keep this fair, every fact about another product comes from that company's own pages, checked on 14 October 2026, and we say where those products do something we don't. Prices and limits change often, so check the links below before you rely on them, including ours.

Muhammad Hussain builds PersonaSend, an AI cold email tool for freelancers, agencies and small teams, and works every day on the parts of cold email that decide whether it works: what gets written, how fast it's sent, and what it costs. Questions or corrections are welcome on our contact page. LinkedInGitHub

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