This comparison is written by the GridMail team. We've tried to be fair — check both tools yourself.
If you run an SDR team across 20+ inboxes and need to push thousands of emails a day, buy Instantly — it is built for exactly that, and we are not. If you are one recruiter sending from one inbox and you want every email to read like you wrote it, that's us.
Choose Instantly if
- You run a team and need many sending mailboxes at once.
- Daily volume is the number you are optimising — thousands of sends, not dozens.
- You are willing to buy and warm separate sending domains, and to keep managing them.
- You want a large built-in warmup network as part of the product.
Choose GridMail if
- You are one recruiter, or a boutique firm, sending from one inbox you already own.
- You would rather send 40 emails that get read than 4,000 that get filtered.
- You do not want to buy a second domain, set DNS records, or run a warmup schedule.
- You want the sequence to stop for anyone who replies, without watching it yourself.
Side by side
| GridMail | Instantly | |
|---|---|---|
| Pricing model | Flat monthly subscription. Free beta right now; flat plans at launch. No per-seat charge, no per-email metering. | Volume-tiered subscription, priced around sending scale and mailbox count. |
| Sending model | From your own Gmail or Google Workspace inbox, at a human pace. | From separate sending domains and mailboxes you set up and warm. |
| Inboxes | One inbox is the design centre, not a limitation to work around. | Many mailboxes — that is the point of the product. |
| Personalization | An opener written from each prospect's own website, which you can review before it sends. | Merge fields and spintax across large lists; AI features available. |
| Reply handling | A reply stops that prospect's sequence automatically. Out-of-office and auto-responders are ignored rather than treated as replies. | Reply detection and inbox features aimed at team triage. |
| Who it's for | Independent recruiters and boutique staffing firms. | High-volume SDR and agency teams. |
Instantly is described qualitatively here on purpose. Its plans and prices change, and we would rather send you to the source than quote a number that has moved — check Instantly's own pricing page before you decide.
Try GridMail free
GridMail is currently in free beta — no card required. Flat-rate plans return at launch.
Create your free beta accountFAQ
It can be, if you are running recruiting outbound at team scale across many mailboxes. For one recruiter sending from one inbox, most of what you are paying for — mailbox fleet management, warmup infrastructure, volume tooling — is overhead you will never use.
No. GridMail sends from the Gmail or Google Workspace inbox you already use, at a human pace. There is no second domain to buy, no DNS to configure, and no warmup schedule to run.
Instantly, comfortably. It is built to scale volume across many mailboxes, and if raw send count is your bottleneck it is the better tool. GridMail deliberately caps what one inbox sends per day, because pushing a personal mailbox past a human pace is how you get filtered.
Yes, and you should if that is where you end up. Your prospect list is yours, exported as CSV whenever you want. We would rather you outgrow us honestly than pay us for a shape of work we are not good at.
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