Articles on: Connecting Guides

How to connect and warm an email alias on MailReach [Google / Gmail / Outlook / Office 365]

⚠️ As we're committed to give the best advice, you have to know that using aliases is NOT RECOMMENDED for deliverability. As aliases are secondary addresses on one mailbox, it multiplies the volume of emails sent which raises the risk of spam AND when if one alias lands in spam, the spam will spread on every address of this mailbox. It's 100% SAFER to have separate inboxes and domains to minimize the risk of spam. More information here : The Best Cold Email Deliverability Sending Strategy to Avoid Landing in Spam.


  • The first part is dedicated to connect a Google alias
  • The second part is dedicated to connect an Outlook / Office 365 alias, scroll down


For Google Workspace / G Suite / Gmail


Step 1 : if it's not created yet, create your alias on the mailbox


Step 2 : add the alias as a "From" address in the mailbox


This is important to make the mailbox able to send emails from the alias address, not just receive emails.


  1. Go in the Gmail inbox of the user where the alias is.
  2. In the top right, click Settings > See all settings
  3. Click the Accounts and import or Accounts tab.
  4. In the "Send mail as" section, click Add another email address.
  5. Enter the details of your alias.
  6. Click Next Step and then Send verification.
  7. Click Add Account.


Step 3 : create an "App Password" in the Gmail inbox where the alias is


To do this step, please follow the instructions in the following guide : How to connect a Gmail / Google Workspace account to MailReach with an App Password


Step 4 : go back on MailReach and connect the alias using "Any other SMTP" as provider


  • Click on Connect account
  • Select "Any other SMTP" as the provider


Complete the first fields with the following :

  • Sender First Name : First name of the alias
  • Last Name : Last name of the alias
  • Email : the alias email


SMTP settings :

  • SMTP server : smtp.gmail.com
  • SMTP port : 587
  • SMTP Username : main / real email address (not the alias, the main address to which the alias is linked to)
  • SMTP Password : the App Password you created just before (NOT the regular password of the mailbox)
  • SMTP Auth Type : Plain
  • Use SSL/TLS : yes - check the box


IMAP settings :

  • IMAP server : imap.gmail.com
  • IMAP port : 993
  • IMAP Username : main / real email address (not the alias, the main address to which the alias is linked to)
  • IMAP Password : the App Password you created just before (NOT the regular password of the mailbox)


For Office 365


Step 1 : if it's not created yet, create your alias on the mailbox


Step 2 : set up the Office 365 accordingly to make it able to connect to MailReach


Please follow the first 5 steps of the following guide : How to connect an Office 365 account to MailReach


Step 3 : Go back on MailReach and connect the alias using "Any other SMTP" as provider


  • Click on Connect account
  • Select "Any other SMTP" as the provider


Complete the first fields with the following :

  • Sender First Name : First name of the alias
  • Last Name : Last name of the alias
  • Email : the alias email


SMTP settings :

  • SMTP server : smtp.office365.com
  • SMTP port : 587
  • SMTP Username : main / real email address (not the alias, the main address to which the alias is linked to)
  • SMTP Password : the password of the main inbox
  • SMTP Auth Type : Plain
  • Use SSL/TLS : yes - check the box


IMAP settings :

  • IMAP server : outlook.office365.com
  • IMAP port : 993
  • IMAP Username : main / real email address (not the alias, the main address to which the alias is linked to)
  • IMAP Password : the password of the main inbox


That's it, it should work. If not, please ping us using the chat support


Updated on: 02/11/2023

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