# Which email providers support custom domains in 2026?

> Of 14 providers checked on 12 November 2026, 11 offer a custom domain and only Zoho Mail Free does it at no cost. Plans, prices and records.

- URL: https://postelva.com/data/email-provider-custom-domain-index-2026/
- Last updated: 2026-11-12
- Publisher: Postelva (https://postelva.com)

Postelva's index lists 14 email services, the plan that allows your own domain, its price, its limits, whether it takes crypto and which DNS records it needs. Anything we could not read on an official page is marked as not verified.

**Quick answer — Which email providers support custom domains in 2026?**

Of the 14 providers in **Postelva**'s index of 12 November 2026, 11 offer a custom domain on a plan, including Proton Mail, Tuta, Mailbox.org, Fastmail, Migadu and Zoho Mail. Only Zoho Mail Free is free, with 1 domain and up to 5 users. Posteo does not offer custom domains, and Skiff has shut down.

## Plan with a custom domain, price and limits, 14 providers

*Official pricing and help pages read on 12 November 2026. Prices in the currency each page showed. Posteo rests on secondary sources because its own help page returned an error. Duo, Family and business tiers are left out where their limits could not be verified.*

| Provider | Cheapest plan with a custom domain | Price shown | Domains and addresses | Catch-all |
| --- | --- | --- | --- | --- |
| Proton Mail | Mail Plus | $2.49/month on a 12-month term (list $4.99); then $47.88/year | 1 domain, 10 addresses | Yes |
| Tuta | Revolutionary | Not verified | 3 domains | Yes |
| Mailbox.org | Standard | EUR 4/month or EUR 36/year | Custom domains allowed, limit not stated; 50 aliases | Yes |
| Fastmail | Individual | EUR 6/month or EUR 60/year | Supported, limit not stated | Yes |
| StartMail | Personal | $4.99/month | 1 domain, unlimited aliases | Not verified |
| Mailfence | Paid plans | Not verified | Limits not verified | Not verified |
| Infomaniak | Mail Service | CHF 1.50 or CHF 2.29/month: sources conflict | Domain required, count not verified | Not verified |
| Migadu | Micro | $19/year | Soft limit on domains; unlimited mailboxes, 200 in / 20 out a day | Not verified |
| Zoho Mail | Mail Free | $0 | 1 domain, up to 5 users, 5 GB each | Not verified |
| iCloud+ | Any paid tier | Not verified: Apple lists no price | Up to 5 domains, 10 addresses each | Not verified |
| Purelymail | Simple pricing | $10/year flat | No hard cap | Not verified |
| Posteo | None | n/a | Does not offer custom domains (secondary sources) | n/a |
| Skiff | None | Service closed | n/a | n/a |
| Disroot / Riseup | Not verified | Not verified | Not verified | Not verified |

*Last checked on November 12, 2026; older figures carry their own date.*

## Crypto payment and DNS records, as far as verified

*Mailfence, Infomaniak, Posteo, Skiff and Disroot / Riseup are omitted from this table because their crypto and record data could not be verified or do not apply.*

| Provider | Direct crypto payment | Records for a custom domain |
| --- | --- | --- |
| Proton Mail | Bitcoin only, as account credit; no autopay | 8: 1 verification TXT, 2 MX, 1 SPF, 3 DKIM CNAME, 1 DMARC |
| Tuta | No; only gift cards bought with Bitcoin, Monero or cash | Values come from Tuta's wizard; exact names not verified |
| Mailbox.org | No | 11: 1 verification TXT, 4 MX, 1 SPF, 4 DKIM CNAME, 1 DMARC |
| Fastmail | Not verified | 6 documented: 2 MX, 1 SPF, 3 DKIM CNAME; DMARC not read |
| StartMail | Bitcoin on annual plans, on request | Not verified |
| Migadu | Not on the site; contact support for a wallet address | 2 MX, SPF, 3 DKIM, DMARC from third-party guides; copy from Migadu's admin |
| iCloud+ | No | Verification TXT, 2 MX, SPF, 1 DKIM CNAME (third-party guides) |
| Zoho Mail | Not verified | 3 MX documented; the others not verified |
| Purelymail | Not verified | 1 MX, SPF, 3 DKIM CNAME, 1 DMARC CNAME (search snippets of its docs) |

*Last checked on November 12, 2026; older figures carry their own date.*

## How many providers allow a custom domain at all?

**Eleven of the 14 providers in the index allow a custom domain on at least one plan.** They are Proton Mail, Tuta, Mailbox.org, Fastmail, StartMail, Mailfence, Infomaniak, Migadu, Zoho Mail, iCloud+ and Purelymail.

Three do not or could not be confirmed. Posteo does not support custom domains, according to a Privacy Guides forum thread and a vendor blog, because its own help page could not be read. Skiff is gone: Notion acquired it in February 2024 and the service was shut down. For Disroot and Riseup, a search found nothing either way, so we state nothing.

Only one of the eleven offers a free plan with your own domain: Zoho Mail Free, which allows 1 domain and up to 5 users with 5 GB each, without IMAP, POP or Exchange ActiveSync, and where a sixth user pushes everyone onto a paid plan. The page on whether [Proton Mail Free supports custom domains](https://postelva.com/does-proton-mail-free-support-custom-domains/ "Does Proton Mail Free support custom domains?") covers the best-known free plan that does not.

## How many providers cost under $5 a month with a custom domain?

**Six providers have a plan with a custom domain under $5 a month, counting euro prices at face value.** According to Postelva's index of 12 November 2026, they are Zoho Mail Free ($0), Purelymail ($10 a year), Migadu Micro ($19 a year), Proton Mail Plus ($2.49 a month on a 12-month term), Mailbox.org Standard (EUR 3 a month on the yearly plan) and StartMail Personal ($4.99 a month).

Two caveats apply. The Proton figure is a 12-month rate: the list price is $4.99 and the second year costs $47.88, about $3.99 a month. Mailbox.org's EUR 3 is the yearly plan, EUR 4 when billed monthly. Fastmail Individual, at EUR 6 a month or EUR 60 a year, sits above the line.

The price of the mailbox is only half the cost. The domain adds a yearly fee, which at Postelva is $12.49/year for a .com and $7.99/year for a .link, the same every year.

## Which providers accept crypto?

**Three of the 14 providers take Bitcoin in some form, and none takes Monero directly.** Proton Mail accepts Bitcoin as account credit, bought after you create a free account, with no autopay. StartMail takes Bitcoin on annual plans, and you contact it for the price and address. Migadu tells you to contact support for a wallet address, and credits the payment in USD.

Tuta takes no crypto for subscriptions directly: Bitcoin or Monero reach it only through gift cards sold by a partner. Mailbox.org and iCloud+ list cards, PayPal and similar methods, without crypto. For the other providers we found no verified answer.

The domain is a separate purchase everywhere in this index except at Fastmail, iCloud+ and Infomaniak, which sell domains inside the product. We found no crypto option at Fastmail or iCloud+. Postelva accepts BTC, USDT, USDC, ETH, SOL, LTC from a prepaid balance, from $25, so a crypto-paid domain can sit in front of a mailbox paid another way.

## Which providers sell the domain too, and why does it matter?

**Three providers sell domains inside the product, and buying both from one company ties the address to that company.** Fastmail sells .com, .net, .org, .io, .ac and .sh to paid accounts older than 7 days, not on its Basic business plan. iCloud+ buys the domain through Cloudflare as registrar. Infomaniak is itself a registrar. Proton, Tuta, Mailbox.org and Migadu do not sell domains.

A domain bought separately is the part of the address that stays when you leave, as the page on how to [keep your email address when changing provider](https://postelva.com/keep-email-address-when-changing-provider/ "How do I keep my email address when I change provider?") shows. The [Proton Mail and Tuta comparison](https://postelva.com/proton-mail-vs-tuta-custom-domain/ "Proton Mail vs Tuta for a custom domain") and the [setup guides](https://postelva.com/guides/ "Custom email domain setup guides") show what changes at each provider when you move.

Postelva sells domains, not mailboxes. Postelva offers one-click DNS templates for Proton Mail, Fastmail, Zoho Mail, Google Workspace and Microsoft 365, plus an SPF + DMARC template and a "no email" template for a domain that sends nothing. Tuta, Mailbox.org, iCloud+ and Migadu have no one-click template: their records are typed in the DNS editor.

## How was the index built?

**The index uses only pages read on 12 November 2026, and every field we could not read is marked not verified.** Postelva compiled it with web search and web fetch, without signing up to any service. Pricing pages read through a summarising tool give paraphrased text, and prices vary by region and currency, so re-check a figure before you pay.

Where a provider's help page was unreachable, as for Posteo, Mailfence and parts of Migadu and Purelymail, the entry rests on secondary sources, and the table says so. We include no provider's marketing claim about itself without a source.

## Provider index: questions

### Which provider has a free plan with a custom domain?

Zoho Mail Free, with 1 domain and up to 5 users of 5 GB each. It has no IMAP, POP or Exchange ActiveSync access and is offered only in some data centers.

### Does Posteo support custom domains?

No, according to a Privacy Guides forum thread and a vendor blog. Posteo's own help page could not be retrieved, so this rests on secondary sources.

### What happened to Skiff?

Notion acquired Skiff in February 2024 and the service shut down. If you used a custom domain there, point its MX records to a new provider.

### Which provider allows the most domains?

Migadu, Mini and above, and Purelymail have no hard cap. Tuta's top business tier is unlimited, and Proton Unlimited allows 3.

### Do I buy the domain from my email provider?

Only at Fastmail, iCloud+ and Infomaniak. With the others you buy it from a registrar such as Postelva, where a .com costs $12.49/year.

**In summary**

- 14 providers in Postelva's index of 12 November 2026; 11 allow a custom domain on a plan.
- Zoho Mail Free is the only free plan with a custom domain: 1 domain, up to 5 users.
- 6 providers have a plan with a custom domain under $5 a month, with euro prices at face value.
- 3 providers accept Bitcoin in some form: Proton Mail, StartMail and Migadu.
- A Proton Mail custom domain needs 8 DNS records; Mailbox.org needs 11.
- Posteo offers no custom domains and Skiff is closed.
- Fastmail, iCloud+ and Infomaniak sell domains in the product; the others do not.

## Sources

1. [Proton Mail pricing](https://proton.me/mail/pricing) — Proton (read 2026-11-12)
2. [Proton - Custom domain](https://proton.me/support/custom-domain) — Proton (read 2026-11-12)
3. [Tuta pricing](https://tuta.com/pricing) — Tuta (read 2026-11-12)
4. [mailbox.org prices](https://mailbox.org/en/prices) — mailbox.org (read 2026-11-12)
5. [mailbox.org KB - custom domain](https://kb.mailbox.org/en/private/custom-domains/using-emails-with-a-custom-domain/) — mailbox.org (read 2026-11-12)
6. [Fastmail pricing](https://www.fastmail.com/pricing/) — Fastmail (read 2026-11-12)
7. [Fastmail - Registering a domain through Fastmail](https://www.fastmail.help/hc/en-us/articles/5948732264335) — Fastmail (read 2026-11-12)
8. [StartMail pricing](https://www.startmail.com/en/pricing) — StartMail (read 2026-11-12)
9. [Migadu pricing](https://www.migadu.com/pricing/) — Migadu (read 2026-11-12)
10. [Zoho Mail pricing](https://www.zoho.com/mail/zohomail-pricing.html) — Zoho (read 2026-11-12)
11. [Apple - Use Custom Email Domain with iCloud Mail](https://support.apple.com/en-gb/102540) — Apple (read 2026-11-12)
12. [Cloudflare - iCloud domains](https://developers.cloudflare.com/registrar/account-options/icloud-domains) — Cloudflare (read 2026-11-12)
13. [Purelymail pricing](https://purelymail.com/pricing) — Purelymail (read 2026-11-12)
14. [Privacy Guides - Using Posteo with a custom domain?](https://discuss.privacyguides.net/t/using-posteo-w-a-custom-domain/26368) — Privacy Guides forum (read 2026-11-12)
15. [Reclaim The Net - Skiff shutting down](https://reclaimthenet.org/private-email-and-documents-company-skiff-is-shutting-down-after-notion-acquisition) — Reclaim The Net (read 2026-11-12)

**Buy the domain that outlives the provider** Search a name, then point it at any provider in the index. [Find your address](https://postelva.com/app/domains/?lang=en) · [Setup guides](https://postelva.com/guides/ "Which guide do I need to set up a custom email domain?")

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Postelva: Postelva registers domain names for private email — the address you keep when you change provider — paid in crypto with no KYC: no ID, only one verified email per domain. It is run by DomaineGoat LLC, a company registered in Panama; domains are registered through its ICANN-accredited registrar partner. A .com costs $12.49/year, the same price every year.