Quick Answer
How do SMTP credentials work with a dedicated domain?
SMTP credentials provide separate username and password access for sending email through a verified dedicated domain. They are useful when connecting third-party sending or warm-up services without sharing your main account credentials.
How SMTP Credentials Work
You may need to send email from your dedicated domain through a third-party service without giving that service access to your primary account login.
SMTP credentials provide separate access specifically for sending email. This gives you more control over connected tools and makes it easier to revoke or replace credentials when needed.
They are especially useful when connecting services such as email warm-up tools or external senders to a verified dedicated sending domain.
Before creating SMTP users, your sending domain should first be added and verified inside BizStackPro.
Verify the domain first
Domain authentication problems involving SPF, DKIM, or DMARC can contribute to email rejection or spam placement. Complete and verify the domain setup before relying on SMTP credentials for sending.
SMTP Credentials at a Glance
Before You Begin
Make sure your dedicated sending domain and DNS access are ready before creating SMTP users.
- Have access to the BizStackPro account where the sending domain will be configured.
- Know which dedicated domain or subdomain you want to use for sending.
- Have access to the domain's DNS provider.
- Be prepared to add the DNS records provided by BizStackPro.
- Verify the dedicated domain before creating SMTP credentials.
- Decide which tool, service, or team member each SMTP user will be assigned to.
Step 1: Navigate to SMTP Settings
Start in the email settings area where dedicated domains and SMTP users are managed.
Open Settings
Open Settings from your BizStackPro dashboard.
Open Email Service
Choose Email Service or the available email settings area.
Open Dedicated Domain and IP
Select Dedicated Domain and IP to view your configured sending domains.
Settings path
Settings → Email Service → Dedicated Domain and IP → select your domain → SMTP Settings.
Step 2: Add and Verify a Dedicated Domain
The dedicated domain must be configured and verified before you create SMTP users for it.
Add the Domain
Click Add Domain, enter the domain you want to use for sending, and save it.
Copy the DNS Records
Copy the DNS records provided by BizStackPro for the dedicated domain.
Add the Records to DNS
Sign in to your domain registrar or DNS provider and add the provided records.
Verify the Domain
Return to BizStackPro and click Verify once the DNS records have been added.
DNS changes may take time
If verification does not succeed immediately, double-check the DNS values and allow time for the records to propagate before trying again.
Step 3: Create SMTP Credentials
Once the dedicated domain is verified, create the SMTP user that will be used by your external tool or sending service.
Open the Domain Menu
Locate the verified domain and click the three dots menu.
Open SMTP Settings
Select SMTP Settings.
Add an SMTP User
Click the plus icon to create a new SMTP user.
Create the Credentials
Enter a username and password, then click Create.
Connect the External Tool
Use the new SMTP credentials in the third-party service or sending tool that needs access to the dedicated domain.
Up to five SMTP users
According to the original guide, you can create up to five SMTP users for a dedicated domain. Keeping users separate makes it easier to revoke one set of credentials without affecting every connected service.
Pay attention to sending-limit warnings
If your plan or account configuration displays a daily sending limit, remain within that limit. If BizStackPro warns that exceeding a limit may affect or remove credentials, treat that warning as important and adjust sending volume accordingly.
Step 4: Manage SMTP Credentials
SMTP users can be removed or given a new password when access changes.
Delete Credentials
Open the SMTP user's three-dot menu, choose Delete, and confirm the deletion.
Reset the Password
Open the SMTP user's three-dot menu, choose Reset Password, enter the new password, and save the change.
Keep each SMTP user separate
Use strong, unique passwords and assign different SMTP users to different tools or purposes when practical. This gives you more control if one connection later needs to be removed.
SMTP, Email Reception, and IMAP
SMTP is used for sending email. Receiving email is generally handled by your mailbox provider through technologies such as IMAP or POP rather than by SMTP itself.
If someone emails an address such as [email protected], where that message appears depends on how the mailbox or email channel has been connected.
Gmail IMAP Example
- IMAP Host: imap.gmail.com
- Port: 993
- Username: Your email address
- Password: App password recommended by the original guide
IMAP settings come from your email provider
The exact incoming-mail settings are determined by the provider hosting your mailbox. Use the settings supplied by that provider when configuring email reception.
SMTP and Deliverability Best Practices
Frequently Asked Questions
What is the purpose of SMTP credentials for dedicated domains?
How do I verify a domain for SMTP use?
Can multiple SMTP users be created for a domain?
How can I reset an SMTP user’s password?
What should I do if emails go to spam?
Continue Learning
Continue learning about dedicated sending domains, email authentication, SMTP connections, and deliverability with these related BizStackPro Help Center guides.
