Aslio vs Mailgun
Aslio vs Mailgun — without a plan to outgrow.
Mailgun is a solid, developer-first email platform with a long track record. The difference worth knowing is what happens in the months when you send less than you planned to.
In short
Aslio is a Mailgun alternative that bills purely per message — about $0.21 per 1,000 emails (₹0.02 each) from a prepaid wallet, with no monthly plan, no seat charge and no minimum. Mailgun is an established developer-focused platform with mature deliverability tooling, an SMTP relay, formal certifications and broader support coverage. Aslio suits uneven or modest volume; Mailgun suits teams wanting a mature platform and SMTP.
- $0.21
- per 1,000 emails
- ₹0
- monthly platform fee
- 0
- seats to buy
- EU
- app hosted in Frankfurt
Side by side
Side by side
Aslio's numbers are exact. Mailgun's plans are not reprinted here — they change, and a stale competitor price is a false statement with a date attached. Check theirs and compare against ours.
| Mailgun | Aslio | |
|---|---|---|
| Pricing model | Monthly plans by volume, with overage | Prepaid wallet, per message, nothing else |
| Cost per 1,000 emails | See mailgun.com/pricing | ₹20 — about $0.21 |
| Monthly fee | Yes, on paid plans | None |
| Minimum commitment | Monthly plan | None |
| SMTP relay | Yes | Yes — port 587, STARTTLS, API key as password |
| Email validation service | Yes, a mature separate product | No |
| Inbound / email parsing | Yes | No — outbound only |
| Own domain + DKIM | Yes | Yes, on every account |
| Delivery events | Yes, retention varies by plan | Yes, every account, from message one |
| Idempotent retries | You handle it | `Idempotency-Key`, enforced by a unique index |
| Refund on permanent failure | You reconcile it | Automatic wallet credit |
| Certifications | SOC 2, ISO 27001 | None — stated plainly |
| Support | Tiered, broader hours | 09:30–18:30 IST, direct to the engineers |
What you get
What you get either way
None of this is gated behind a higher tier on Aslio.
Idempotency that holds
Send with an Idempotency-Key and retry as often as you like. A duplicate replays the original response instead of sending twice — enforced by a unique index, not a check-then-write race.
Refunded when we fail
If a message is charged and then permanently fails, the wallet is credited back automatically and the key is released so your retry can succeed.
Suppression before billing
Hard bounces and complaints go on your do-not-mail list. Later sends to that address are rejected before you are charged, which protects your sender reputation and ours.
One-click unsubscribe
Marketing sends carry RFC 8058 headers, so Gmail and Yahoo show a native Unsubscribe button — required for bulk senders since 2024.
Delivery pushed to you
Sent, delivered, bounced and complained events arrive on your statusCallbackUrl webhook, on every account from the first message.
Your own sending domain
You verify your domain and sign with your own DKIM, so your reputation stays yours instead of being pooled with every other sender on a shared IP.
Honestly
When Mailgun is the better choice
- You need inbound email or parsing. Mailgun does inbound routing and Aslio is outbound-only. That is a hard requirement, not a preference.
- You need SMTP. Mailgun offers a relay; Aslio is REST-only.
- You use email validation as a product. Mailgun's is mature; we do not offer one.
- Your procurement requires SOC 2 or ISO 27001. We hold neither.
- You want a large, established vendor with a long public track record — a reasonable thing to want for a critical dependency.
FAQ
Frequently asked questions
Is Aslio a good Mailgun alternative?
For outbound transactional email on uneven or modest volume, yes — no monthly plan, no seats, no minimum, and about $0.21 per 1,000. It is not an alternative if you rely on Mailgun's inbound routing, email validation product, or SMTP relay, none of which Aslio offers.
Does Aslio support inbound email?
No. Aslio is outbound only. If you route replies or parse inbound mail through Mailgun today, that part has no equivalent here.
How does the pricing compare?
Aslio has no monthly fee at all and charges ₹0.02 a message — roughly $0.21 per 1,000 — from a prepaid wallet. Mailgun prices in monthly plans with overage, so the comparison depends on your volume; the gap is widest for senders whose volume is lumpy, because a plan is sized for the busy month.
What happens if a message fails after I have been charged?
The wallet is credited back automatically and the idempotency key is released so your retry can succeed. You do not reconcile it and you do not open a ticket.
Can I try it without committing?
There is nothing to commit to — no plan and no minimum. Top up a small amount and send; a hundred test emails costs about one rupee.
Run both in parallel. Keep the one that wins.
Top up a wallet and send. No monthly platform fee, no seat charge, no minimum commitment — a hundred test emails costs about one rupee.
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