SMTP settings by email provider
SMTP server, port, user name and sending limit of 62 email providers by country, for sending Shopify Flow emails from your own mailbox.
To send through your own mailbox, the app needs four values from your email provider: the SMTP server, the port, the user name and the password. This page lists the server, the port and the kind of user name for 62 common providers, sorted by country, together with the sending limit each provider publishes.
Every value was read on the provider's own help pages and checked on 11 November 2026. Providers change their settings from time to time. The name of each provider links to the page the values come from: if that page says something different, the provider is right.
How to use these values
- In the app, open Email Senders, go to SMTP servers and click Add SMTP server.
- Enter the server from the table as Host and the port as Port. The app picks the encryption from the port: 465 uses SSL, 587 uses STARTTLS.
- Enter your Username and Password. The column User name says what your provider expects.
- Fill in From Email and From Name, click Test Connection, then save.
Send email from Shopify Flow with a custom SMTP server walks through the whole setup with pictures, from the server to the finished workflow.
How to read the tables
- Server and Port go into the fields Host and Port.
- User name: "Email address" means the full address of the mailbox, together with the password of that mailbox. Anything else is spelled out in the row.
- Sending limit and notes: the limit the provider publishes, and what has to be done at the provider before SMTP works. "Not published" means its help pages name no number. Many limits depend on your plan or on the age of the mailbox, and a new mailbox often starts lower.
When a limit is reached, the provider rejects further emails until the limit resets. History in the app then shows the provider's error message for each email that was not sent, see History and troubleshooting.
Germany
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| IONOS | smtp.ionos.de |
465 | Email address | 500 emails per hour. A new mailbox starts lower: 50 per hour in the first week, 100 in the second, 400 until day 30. |
| STRATO | smtp.strato.de |
465 | Email address | Not published. A mailbox younger than 30 days is limited more strictly. |
| ALL-INKL.COM | Your KAS login followed by .kasserver.com, for example w0123456.kasserver.com |
465 | Email address | Not published. |
| Host Europe | wpXXXXXXX.mailout.server-he.de, with the number of your contract |
465 | The account name from Host Europe, not the email address | By default 50 emails per hour and 150 per day. You can change this in the customer area (KIS). |
| domainfactory | sslout.df.eu |
465 | Email address | Not published. |
| united-domains | smtps.udag.de |
587 | Email address | Not published. |
| Hetzner (web hosting) | mail.your-server.de |
587 | Email address | Not published. |
| mittwald | mail.agenturserver.de |
465 | The mailbox name (it looks like p123456p1), not the email address |
400 emails per day per mailbox. |
Austria
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| world4you | smtp.world4you.com |
587 | Email address | A daily limit exists. Your current number is shown in the world4you customer area. |
| easyname | smtp.easyname.com |
465 | As shown in your easyname control panel | 400 per hour and 1,500 per day. |
| A1 Business Mail | bsmtp.a1.net |
587 | Email address | Not published. |
ALL-INKL.COM and Hetzner are also common in Austria: see Germany.
Switzerland
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| Hostpoint | asmtp.mail.hostpoint.ch |
587 | Email address | Not published. |
| Infomaniak | mail.infomaniak.com |
587 | Email address, with the password created for that address (not your Infomaniak account login) | 500 recipients per day on the paid plans, 200 on the Starter and free plans. Every recipient counts. |
| cyon | mail.cyon.ch |
465 | Email address | 100 recipients per hour per address; it can be raised in my.cyon, depending on the plan. A new hosting is limited to 30 per hour in its first 30 days. |
| Hoststar | lx#.hoststar.hosting, where # is the number of your server |
465 | Email address | 100 emails per hour per mailbox by default; up to 200, 400 or 600 depending on the plan. |
France
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| IONOS | smtp.ionos.fr |
465 | Email address | 500 emails per hour. A new mailbox starts lower: 50 per hour in the first week, 100 in the second, 400 until day 30. |
| Gandi | mail.gandi.net |
465 | Email address | 1,000 emails per hour and 8,000 per day. |
| o2switch | Your server name followed by .o2switch.net (it is in your welcome email) |
465 | Email address | Not stated on its help pages. |
Infomaniak is listed under Switzerland, Hostinger under International.
Italy
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| Aruba | smtps.aruba.it |
465 | Email address | Aruba advises not more than 250 emails in 20 minutes, and allows 150 recipients per email. |
| Register.it | authsmtp.securemail.pro |
465 | Email address | 500 emails per day with Mail Personal, 1,000 with Mail Professional. |
| IONOS | smtp.ionos.it |
465 | Email address | 500 emails per hour. A new mailbox starts lower: 50 per hour in the first week, 100 in the second, 400 until day 30. |
| Serverplan | mail. followed by your domain |
465 | Email address | 300 emails per hour per domain on shared hosting. |
SiteGround and GoDaddy are listed under International.
Spain
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| IONOS | smtp.ionos.es |
465 | Email address | 500 emails per hour. A new mailbox starts lower: 50 per hour in the first week, 100 in the second, 400 until day 30. |
| Arsys | smtp.serviciodecorreo.es |
465 | Email address | Not published. |
| DonDominio | smtp.dondominio.com |
587 | The login shown in your DonDominio control panel | Not published. |
| Dinahosting | Shown in your panel under Correo; it looks like example-com.correoseguro.dinaserver.com |
465 | The name of the mail account | Dinahosting advises at most 180 recipients per hour. Switch on "Correo TLS" for the account first. |
| cdmon | smtp. followed by your domain |
587 | As shown in your cdmon control panel | Not stated on its help pages. |
Hostinger and GoDaddy are listed under International.
Netherlands
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| TransIP | smtp.transip.email |
465 | Email address | 200 emails per day per address, every recipient counts. TransIP support can raise it. |
| Mijndomein | mail.mijndomein.nl |
465 | Email address | 10 emails per 5 minutes. |
| Yourhosting | mail.yourhosting.nl |
465 | Email address | Not published. |
Belgium
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| Combell (basic mailbox) | smtp-auth.mailprotect.be |
587 | Email address | Not published. |
Denmark
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| Simply.com | smtp.simply.com |
587 | Email address | 1,000 emails per hour. Above 300 emails within two hours the account can be suspended automatically. |
| DanDomain | asmtp.dandomain.dk |
587 | Email address | Not published. |
United Kingdom and United States
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| IONOS (United Kingdom) | smtp.ionos.co.uk |
465 | Email address | 500 emails per hour. A new mailbox starts lower: 50 per hour in the first week, 100 in the second, 400 until day 30. |
| IONOS (United States) | smtp.ionos.com |
465 | Email address | 500 emails per hour. A new mailbox starts lower: 50 per hour in the first week, 100 in the second, 400 until day 30. |
| 123 Reg (Professional Email) | smtpout.secureserver.net |
465 | Email address | 500 emails per day per mailbox. |
| HostGator | Your server name from the Customer Portal, for example gator1234.hostgator.com |
465 | Email address | 500 emails per hour per domain on shared hosting. |
GoDaddy, Namecheap and Hostinger are listed under International.
Brazil
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| Locaweb | email-ssl.com.br |
465 | Email address | 100 emails per hour per mailbox, 500 per hour for the whole domain. |
| KingHost | smtp.kinghost.net |
465 | Email address | 1,000 recipients per hour, and 100 to 400 emails per hour per domain depending on the plan. |
| HostGator Brasil | The server name of your hosting plan, for example br01.hostgator.com.br |
465 | Email address | HostGator does not disclose the limit on shared hosting. |
Hostinger is listed under International.
Portugal
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| PTisp | mail. followed by your domain |
465 | Email address | Not published. |
| Dominios.pt | mail. followed by your domain |
465 | Email address | 600 emails per hour on shared hosting. |
| Amen.pt | smtp-pt.securemail.pro |
465 | Email address | Not published. |
Japan
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| Xserver | The mail server from your setup email; it looks like sv***.xserver.jp |
465 | Email address | About 1,500 emails per hour and 15,000 per day. Switch off the restriction for access from outside Japan first (see above). |
| Sakura Internet | Your initial domain, <account>.sakura.ne.jp |
465 | Email address | About 400 emails per hour on Light, Standard and Premium, 1,000 on the Business plans. Switch off the foreign IP address filter first (see above). |
| Lolipop | smtp.lolipop.jp |
465 | Email address | 100 emails per hour on Economy, 300 on Light, 1,000 on Standard and above. |
| ConoHa WING | Shown in the control panel, under the contract information of your server | 465 | Email address | Not published. Switch off the overseas IP restriction of the address first (see above). |
International
Mailboxes that come with a domain or a hosting plan and are used in many countries.
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| Hostinger | smtp.hostinger.com |
465 | Email address | 3,000 emails per day on Business Standard and Premium, 1,000 on Business Starter, 100 during a trial. If the mailbox uses two-step sign-in, enter an app password. |
| GoDaddy Professional Email | smtpout.secureserver.net |
465 | Email address | 500 emails per day per mailbox. |
| Namecheap Private Email | mail.privateemail.com |
465 | Email address, with an app password | 500 emails per hour, 20 during a trial. Switch on access for third-party apps in the Private Email settings first. |
| Titan | smtp.titan.email |
465 | Email address | From 300 emails per day on Starter to 2,000 on Ultra. Switch on third-party email access for the account first. Accounts hosted in the EU use smtp0101.titan.email. |
| Fastmail | smtp.fastmail.com |
465 | Email address, with an app password (the regular password does not work) | 4,000 emails per day or more, depending on the plan. The Basic plan has no SMTP access. |
| SiteGround | Shown in Site Tools under Email, Accounts, Mail Configuration | 465 | Email address | 400 emails per hour on StartUp and GrowBig, 800 on GoGeek and Cloud. Every recipient counts. |
Sending services
A sending service is built for automated email. It allows far more emails than a mailbox and gives you delivery statistics. All of the services below need your sending domain or sender address verified in their dashboard first, and they sign in with a login or key the service issues, not with a mailbox password.
| Provider | Server | Port | User name | Sending limit and notes |
|---|---|---|---|---|
| Brevo | smtp-relay.brevo.com |
587 | The SMTP login shown on Brevo's SMTP page. The password is an SMTP key, not an API key. | 300 emails per day on the free plan. |
| Mailjet | in-v3.mailjet.com |
587 | Your API key. The password is the secret key. | 200 emails per day on the free plan. |
| Mailgun (EU region) | smtp.eu.mailgun.org |
587 | The SMTP credentials of your domain, not an API key | 100 emails per day on the free plan. The EU and US regions are separate: use the server of the region your domain is in. |
| Mailgun (US region) | smtp.mailgun.org |
587 | The SMTP credentials of your domain, not an API key | 100 emails per day on the free plan. |
| Postmark | smtp.postmarkapp.com |
587 | Your Server API Token, as user name and as password | Postmark has no daily limit. |
| SendGrid | smtp.sendgrid.net |
587 | The word apikey. The password is an API key. |
Depends on your plan. |
| SMTP2GO | mail.smtp2go.com |
587 | An SMTP user you create under Sending, SMTP Users | 200 emails per day on the free plan. |
| Resend | smtp.resend.com |
465 | The word resend. The password is an API key. |
100 emails per day on the free plan. |
| Amazon SES | email-smtp.<region>.amazonaws.com, for example email-smtp.eu-west-1.amazonaws.com |
587 | SMTP credentials created in the SES console (not your AWS access keys) | The sending quota of your account. A new account is in the sandbox: 200 emails per day, to verified addresses only. |
Free mailboxes and mailboxes from your internet provider
A free mailbox, or the address that came with your internet connection, is made for personal mail. It sends from an address that is not on your store's domain, its provider publishes a low sending limit or none at all, and several providers block the sign-in of other programs until you switch it on in the mailbox settings. For store emails we recommend a mailbox on your own domain or one of the sending services above.
If you still want to use such a mailbox, search the provider's help pages for "SMTP" or "set up a mail program". The values go into the same fields.
Your provider is not listed
Every provider that offers SMTP works with the app.
- Search the provider's help pages for "SMTP", "outgoing mail server" or the setup guide for Outlook or Thunderbird. It names the server and the port.
- Use the port for SSL (465) or for STARTTLS (587).
- If your mail server only accepts known IP addresses, allow the address shown under Our sending IP address on the SMTP server form.
- Tell us which provider you are missing through Support and we will add it to this page.
After the connection works
- Set up SPF and DKIM for your domain at your provider, so your emails do not end up in the spam folder: Email deliverability.
- Send yourself a test email before you switch on a workflow: Testing your email setup.