The number that sends people looking for an IONOS email alternative is not the price. It's 2 GB — the storage each mailbox gets on both of their email plans, whether you pay $1.10 a month or $4.
The price deserves a second look too, because the headline figures are first-term rates on a three-year commitment and roughly double at renewal.
What an IONOS Email Alternative Is Priced Against
From their email hosting page:
| Plan | First term | Renews at | Storage | Accounts |
|---|---|---|---|---|
| Basic Email | $1.10/mo | $2.00/mo | 2 GB | 1 |
| Business Email | $2.00/mo | $4.00/mo | 2 GB each | 25 |
| Microsoft Exchange | $3.00/mo | $6.00/mo | 50 GB | 1 |
| Microsoft 365 | $1.00/mo | $15.00/mo | 50 GB + 1 TB | 1 |
Two things to take from that table before comparing any IONOS email alternative against it.
The first term is three years. That is how the discount is earned, so $1.10 a month means committing until 2029. It's disclosed, and it's a longer lock than most of this market asks for.
Renewal roughly doubles, and in one case doesn't. Microsoft 365 at $1 a month renews at $15 — a fifteenfold step. Whatever you compare, compare the renewal column.
Credit where it's due on value: Business Email at $4 a month renewal covers 25 mailboxes, which is $48 a year for the plan rather than per person. That's genuinely cheap, and no honest IONOS email alternative pretends otherwise.
Two Gigabytes Is About a Year
Here is the constraint that makes the price academic.
Both email plans give 2 GB per mailbox. A working business address — one that receives invoices, contracts, photographs and the occasional slide deck — fills that in roughly a year, often less. After that mail bounces or you start deleting, and there is no pool to borrow from because the allowance is fixed per box.
Compare it to what the rest of the market considers normal: Greatmail gives no explicit cap at $1.95, Mailbux pools 10 GB across unlimited mailboxes, MailAfiniti gives 10 GB per mailbox at $1.50, and our Starter pools 15 GB. Two gigabytes is at the bottom of the range by a wide margin.
The escape route IONOS offers is Exchange at 50 GB, which is $6 a month per user at renewal — so solving a storage problem means moving to per-seat pricing at three times the cost. That is the moment an IONOS email alternative usually gets searched for.
What IONOS Does Well
24/7 support is included on every plan, which — as the MXroute, Purelymail and Migadu comparisons show — is not the norm among independents.
A free domain comes with each plan, and a lifetime domain with Hosted Exchange. If you were buying one anyway, that's real money.
IMAP on every tier, so any client connects. Not something to assume in this market — Zoho's free plan has no IMAP at all and Fastmail's cheapest business tier has none either.
One supplier for domain, hosting and mail, with no ads, which is the whole appeal for a lot of small businesses.
Where an IONOS Email Alternative Changes Shape
Four differences, and the first is the reason most people move.
Storage is pooled, not rationed per box. 15 GB on Starter, 50 GB on Pro, 200 GB on Agency, shared across every mailbox with a ceiling you set per address. One person's archive doesn't hit a wall while another sits at 200 MB, and nobody moves to Exchange to fix a storage problem.
No term, and the price you see is the price you renew at. There is no three-year commitment and no first-term discount to fall off.
DNS applied for you across every domain. Either a Cloudflare token scoped to the zone, showing you the change before it lands, or a single Domain Connect click at registrars where you hold nothing. See DNS setup.
Addresses a team answers. support@ as a shared mailbox with members, so two people don't unknowingly answer the same customer.
Plus what matters when the mailboxes belong to clients: bulk provisioning with setup invites, address verification in the same account, reading mailboxes hosted elsewhere, and your own branding on the dashboard and webmail.
The Verdict, Whoever You Are
This turns on how much mail you keep, not on how many people you have.
One person who deletes ruthlessly. Basic Email at $2 a month renewal with a free domain is fine, and an IONOS email alternative isn't obviously better. If 2 GB genuinely covers you and the three-year term doesn't bother you, stay.
A team. 25 mailboxes for $48 a year is excellent until the first person hits the wall, and someone always does. Pooled storage removes the failure mode entirely — 50 GB on Pro at $120 a year, shared, with per-address caps so one archivist doesn't consume it. Add role addresses that cost nothing and delivery-time filters.
Anyone considering their Microsoft 365 offer. Read the renewal figure twice. $1 a month becomes $15, which is more than buying Microsoft 365 directly. The first-year saving is real and so is year two.
Mail for several companies. A three-year term per client and a 2 GB ceiling per mailbox is a bad shape for agency work. Against that: bulk domain and mailbox provisioning, setup invites so you never hold a client's password, DNS across the portfolio, and your brand on what clients log into.
Frequently Asked Questions
How much storage does IONOS email give?
2 GB per mailbox on both Basic and Business Email. Their Exchange plans give 50 GB, at roughly three times the price per user.
Is the $1.10 price real?
Yes, for the first term, which is three years. It renews at $2 a month. Business Email goes from $2 to $4 the same way.
Does IONOS support IMAP?
Yes, on every plan, so Outlook, Apple Mail and Thunderbird all connect. Worth confirming because several competitors gate it behind an upgrade.
Is an IONOS email alternative cheaper?
Not per mailbox at small sizes — 25 accounts for $48 a year is hard to beat. It becomes cheaper the moment 2 GB stops being enough, because their answer to that is a per-seat Exchange plan.
What happens when a mailbox fills up?
Mail stops being accepted for that address until space is freed, and there's no shared pool to draw from. Pooled storage with a per-address ceiling is the structural fix.
Can I keep the free domain if I move my mail?
Domain registration and mail hosting are separate things. You change the MX records and the domain stays where it is. See DNS setup. Check the domain's own renewal price, since "free" usually applies to the first term only.
Will migrating lose anything?
No. IMAP makes it an ordinary copy, and the reconciliation afterwards tells you which folder came up short rather than leaving you to notice. See bulk migration.
